From 560ff94f764794fb44cad08c588bbd6c934d2708 Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Thu, 25 Oct 2018 21:21:36 +0200
Subject: [PATCH 01/10] Add XML Schemas for Assisted GNSS

---
 docs/xml-schemas/README.md              | 28 +++++++++
 docs/xml-schemas/cnav_ephemeris_map.xsd | 72 +++++++++++++++++++++++
 docs/xml-schemas/ephemeris_map.xsd      | 78 +++++++++++++++++++++++++
 docs/xml-schemas/gal_almanac_map.xsd    | 56 ++++++++++++++++++
 docs/xml-schemas/gal_ephemeris_map.xsd  | 60 +++++++++++++++++++
 docs/xml-schemas/gal_utc_model.xsd      | 28 +++++++++
 docs/xml-schemas/gps_almanac_map.xsd    | 52 +++++++++++++++++
 docs/xml-schemas/iono_model.xsd         | 27 +++++++++
 docs/xml-schemas/utc_model.xsd          | 28 +++++++++
 9 files changed, 429 insertions(+)
 create mode 100644 docs/xml-schemas/README.md
 create mode 100644 docs/xml-schemas/cnav_ephemeris_map.xsd
 create mode 100644 docs/xml-schemas/ephemeris_map.xsd
 create mode 100644 docs/xml-schemas/gal_almanac_map.xsd
 create mode 100644 docs/xml-schemas/gal_ephemeris_map.xsd
 create mode 100644 docs/xml-schemas/gal_utc_model.xsd
 create mode 100644 docs/xml-schemas/gps_almanac_map.xsd
 create mode 100644 docs/xml-schemas/iono_model.xsd
 create mode 100644 docs/xml-schemas/utc_model.xsd

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
new file mode 100644
index 000000000..bd1a06a78
--- /dev/null
+++ b/docs/xml-schemas/README.md
@@ -0,0 +1,28 @@
+# XML Schemas for Assisted GNSS-SDR
+
+GNSS-SDR can read assistance data from [Extensible Markup Language (XML)](https://www.w3.org/XML/) files, and can store navigation data decoded from GNSS signals in the same format. This page provides XML Schemas which describe the structure for those XML files.
+
+[XSD (XML Schema Definition)](https://www.w3.org/XML/Schema) is a World Wide Web Consortium (W3C) recommendation that specifies how to formally describe the elements in an XML document.
+
+
+GPS L1 C/A
+----------
+
+ - [ephemeris_map.xsd](./ephemeris_map.xsd)
+ - [iono_model.xsd](./iono_model.xsd)
+ - [utc_model.xsd](./utc_model.xsd)
+ - [gps_almanac_map.xsd](./gps_almanac_map.xsd)
+ 
+ 
+GPS L2C and L5
+--------------
+ 
+ - [cnav_ephemeris_map.xsd](./cnav_ephemeris_map.xsd)
+ 
+ 
+Galileo OS
+----------
+
+ - [gal_ephemeris_map.xsd](./gal_ephemeris_map.xsd)
+ - [gal_utc_model.xsd](./gal_utc_model.xsd)
+ - [gal_almanac_map.xsd](./gal_almanac_map.xsd)
diff --git a/docs/xml-schemas/cnav_ephemeris_map.xsd b/docs/xml-schemas/cnav_ephemeris_map.xsd
new file mode 100644
index 000000000..139756f36
--- /dev/null
+++ b/docs/xml-schemas/cnav_ephemeris_map.xsd
@@ -0,0 +1,72 @@
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="boost_serialization">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="GNSS-SDR_cnav_ephemeris_map">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element type="xs:byte" name="count"/>
+              <xs:element type="xs:byte" name="item_version"/>
+              <xs:element name="item" maxOccurs="unbounded" minOccurs="0">
+                <xs:complexType>
+                  <xs:sequence>
+                    <xs:element type="xs:byte" name="first"/>
+                    <xs:element name="second">
+                      <xs:complexType>
+                        <xs:sequence>
+                          <xs:element type="xs:byte" name="i_satellite_PRN"/>
+                          <xs:element type="xs:float" name="d_TOW"/>
+                          <xs:element type="xs:float" name="d_Crs"/>
+                          <xs:element type="xs:float" name="d_M_0"/>
+                          <xs:element type="xs:float" name="d_Cuc"/>
+                          <xs:element type="xs:float" name="d_e_eccentricity"/>
+                          <xs:element type="xs:float" name="d_Cus"/>
+                          <xs:element type="xs:float" name="d_Toe1"/>
+                          <xs:element type="xs:float" name="d_Toe2"/>
+                          <xs:element type="xs:float" name="d_Toc"/>
+                          <xs:element type="xs:float" name="d_Cic"/>
+                          <xs:element type="xs:float" name="d_OMEGA0"/>
+                          <xs:element type="xs:float" name="d_Cis"/>
+                          <xs:element type="xs:float" name="d_i_0"/>
+                          <xs:element type="xs:float" name="d_Crc"/>
+                          <xs:element type="xs:float" name="d_OMEGA"/>
+                          <xs:element type="xs:float" name="d_IDOT"/>
+                          <xs:element type="xs:short" name="i_GPS_week"/>
+                          <xs:element type="xs:float" name="d_TGD"/>
+                          <xs:element type="xs:float" name="d_ISCL1"/>
+                          <xs:element type="xs:float" name="d_ISCL2"/>
+                          <xs:element type="xs:float" name="d_ISCL5I"/>
+                          <xs:element type="xs:float" name="d_ISCL5Q"/>
+                          <xs:element type="xs:float" name="d_DELTA_A"/>
+                          <xs:element type="xs:float" name="d_A_DOT"/>
+                          <xs:element type="xs:float" name="d_DELTA_OMEGA_DOT"/>
+                          <xs:element type="xs:float" name="d_A_f0"/>
+                          <xs:element type="xs:float" name="d_A_f1"/>
+                          <xs:element type="xs:float" name="d_A_f2"/>
+                          <xs:element type="xs:byte" name="b_integrity_status_flag"/>
+                          <xs:element type="xs:byte" name="b_alert_flag"/>
+                          <xs:element type="xs:byte" name="b_antispoofing_flag"/>
+                        </xs:sequence>
+                        <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                        <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                        <xs:attribute type="xs:byte" name="version" use="optional"/>
+                      </xs:complexType>
+                    </xs:element>
+                  </xs:sequence>
+                  <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                  <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                  <xs:attribute type="xs:byte" name="version" use="optional"/>
+                </xs:complexType>
+              </xs:element>
+            </xs:sequence>
+            <xs:attribute type="xs:byte" name="class_id"/>
+            <xs:attribute type="xs:byte" name="tracking_level"/>
+            <xs:attribute type="xs:byte" name="version"/>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+      <xs:attribute type="xs:string" name="signature"/>
+      <xs:attribute type="xs:byte" name="version"/>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>
diff --git a/docs/xml-schemas/ephemeris_map.xsd b/docs/xml-schemas/ephemeris_map.xsd
new file mode 100644
index 000000000..f76c5e900
--- /dev/null
+++ b/docs/xml-schemas/ephemeris_map.xsd
@@ -0,0 +1,78 @@
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="boost_serialization">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="GNSS-SDR_ephemeris_map">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element type="xs:byte" name="count"/>
+              <xs:element type="xs:byte" name="item_version"/>
+              <xs:element name="item" maxOccurs="unbounded" minOccurs="0">
+                <xs:complexType>
+                  <xs:sequence>
+                    <xs:element type="xs:byte" name="first"/>
+                    <xs:element name="second">
+                      <xs:complexType>
+                        <xs:sequence>
+                          <xs:element type="xs:byte" name="i_satellite_PRN"/>
+                          <xs:element type="xs:float" name="d_TOW"/>
+                          <xs:element type="xs:float" name="d_IODE_SF2"/>
+                          <xs:element type="xs:float" name="d_IODE_SF3"/>
+                          <xs:element type="xs:float" name="d_Crs"/>
+                          <xs:element type="xs:float" name="d_Delta_n"/>
+                          <xs:element type="xs:float" name="d_M_0"/>
+                          <xs:element type="xs:float" name="d_Cuc"/>
+                          <xs:element type="xs:float" name="d_e_eccentricity"/>
+                          <xs:element type="xs:float" name="d_Cus"/>
+                          <xs:element type="xs:float" name="d_sqrt_A"/>
+                          <xs:element type="xs:float" name="d_Toe"/>
+                          <xs:element type="xs:float" name="d_Toc"/>
+                          <xs:element type="xs:float" name="d_Cic"/>
+                          <xs:element type="xs:float" name="d_OMEGA0"/>
+                          <xs:element type="xs:float" name="d_Cis"/>
+                          <xs:element type="xs:float" name="d_i_0"/>
+                          <xs:element type="xs:float" name="d_Crc"/>
+                          <xs:element type="xs:float" name="d_OMEGA"/>
+                          <xs:element type="xs:float" name="d_OMEGA_DOT"/>
+                          <xs:element type="xs:float" name="d_IDOT"/>
+                          <xs:element type="xs:byte" name="i_code_on_L2"/>
+                          <xs:element type="xs:short" name="i_GPS_week"/>
+                          <xs:element type="xs:byte" name="b_L2_P_data_flag"/>
+                          <xs:element type="xs:byte" name="i_SV_accuracy"/>
+                          <xs:element type="xs:byte" name="i_SV_health"/>
+                          <xs:element type="xs:float" name="d_TGD"/>
+                          <xs:element type="xs:float" name="d_IODC"/>
+                          <xs:element type="xs:short" name="i_AODO"/>
+                          <xs:element type="xs:byte" name="b_fit_interval_flag"/>
+                          <xs:element type="xs:float" name="d_spare1"/>
+                          <xs:element type="xs:float" name="d_spare2"/>
+                          <xs:element type="xs:float" name="d_A_f0"/>
+                          <xs:element type="xs:float" name="d_A_f1"/>
+                          <xs:element type="xs:float" name="d_A_f2"/>
+                          <xs:element type="xs:byte" name="b_integrity_status_flag"/>
+                          <xs:element type="xs:byte" name="b_alert_flag"/>
+                          <xs:element type="xs:byte" name="b_antispoofing_flag"/>
+                        </xs:sequence>
+                        <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                        <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                        <xs:attribute type="xs:byte" name="version" use="optional"/>
+                      </xs:complexType>
+                    </xs:element>
+                  </xs:sequence>
+                  <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                  <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                  <xs:attribute type="xs:byte" name="version" use="optional"/>
+                </xs:complexType>
+              </xs:element>
+            </xs:sequence>
+            <xs:attribute type="xs:byte" name="class_id"/>
+            <xs:attribute type="xs:byte" name="tracking_level"/>
+            <xs:attribute type="xs:byte" name="version"/>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+      <xs:attribute type="xs:string" name="signature"/>
+      <xs:attribute type="xs:byte" name="version"/>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>
diff --git a/docs/xml-schemas/gal_almanac_map.xsd b/docs/xml-schemas/gal_almanac_map.xsd
new file mode 100644
index 000000000..887caf064
--- /dev/null
+++ b/docs/xml-schemas/gal_almanac_map.xsd
@@ -0,0 +1,56 @@
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="boost_serialization">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="GNSS-SDR_gal_almanac_map">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element type="xs:byte" name="count"/>
+              <xs:element type="xs:byte" name="item_version"/>
+              <xs:element name="item" maxOccurs="unbounded" minOccurs="0">
+                <xs:complexType>
+                  <xs:sequence>
+                    <xs:element type="xs:byte" name="first"/>
+                    <xs:element name="second">
+                      <xs:complexType mixed="true">
+                        <xs:sequence>
+                          <xs:element type="xs:byte" name="i_satellite_PRN"/>
+                          <xs:element type="xs:float" name="d_Toa"/>
+                          <xs:element type="xs:float" name="d_WNa"/>
+                          <xs:element type="xs:float" name="d_IODa"/>
+                          <xs:element type="xs:float" name="d_Delta_i"/>
+                          <xs:element type="xs:float" name="d_M_0"/>
+                          <xs:element type="xs:float" name="d_e_eccentricity"/>
+                          <xs:element type="xs:float" name="d_Delta_sqrt_A"/>
+                          <xs:element type="xs:float" name="d_OMEGA0"/>
+                          <xs:element type="xs:float" name="d_OMEGA"/>
+                          <xs:element type="xs:float" name="d_OMEGA_DOT"/>
+                          <xs:element type="xs:float" name="d_A_f0"/>
+                          <xs:element type="xs:float" name="d_A_f1"/>
+                          <xs:element type="xs:float" name="E5b_HS"/>
+                          <xs:element type="xs:float" name="E1B_HS"/>
+                          <xs:element type="xs:float" name="E5a_HS"/>
+                        </xs:sequence>
+                        <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                        <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                        <xs:attribute type="xs:byte" name="version" use="optional"/>
+                      </xs:complexType>
+                    </xs:element>
+                  </xs:sequence>
+                  <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                  <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                  <xs:attribute type="xs:byte" name="version" use="optional"/>
+                </xs:complexType>
+              </xs:element>
+            </xs:sequence>
+            <xs:attribute type="xs:byte" name="class_id"/>
+            <xs:attribute type="xs:byte" name="tracking_level"/>
+            <xs:attribute type="xs:byte" name="version"/>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+      <xs:attribute type="xs:string" name="signature"/>
+      <xs:attribute type="xs:byte" name="version"/>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>
diff --git a/docs/xml-schemas/gal_ephemeris_map.xsd b/docs/xml-schemas/gal_ephemeris_map.xsd
new file mode 100644
index 000000000..06c541af5
--- /dev/null
+++ b/docs/xml-schemas/gal_ephemeris_map.xsd
@@ -0,0 +1,60 @@
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="boost_serialization">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="GNSS-SDR_gal_ephemeris_map">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element type="xs:byte" name="count"/>
+              <xs:element type="xs:byte" name="item_version"/>
+              <xs:element name="item" maxOccurs="unbounded" minOccurs="0">
+                <xs:complexType>
+                  <xs:sequence>
+                    <xs:element type="xs:byte" name="first"/>
+                    <xs:element name="second">
+                      <xs:complexType>
+                        <xs:sequence>
+                          <xs:element type="xs:byte" name="i_satellite_PRN"/>
+                          <xs:element type="xs:float" name="M0_1"/>
+                          <xs:element type="xs:float" name="e_1"/>
+                          <xs:element type="xs:float" name="A_1"/>
+                          <xs:element type="xs:float" name="OMEGA_0_2"/>
+                          <xs:element type="xs:float" name="i_0_2"/>
+                          <xs:element type="xs:float" name="omega_2"/>
+                          <xs:element type="xs:float" name="OMEGA_dot_3"/>
+                          <xs:element type="xs:float" name="iDot_2"/>
+                          <xs:element type="xs:float" name="C_uc_3"/>
+                          <xs:element type="xs:float" name="C_us_3"/>
+                          <xs:element type="xs:float" name="C_rc_3"/>
+                          <xs:element type="xs:float" name="C_rs_3"/>
+                          <xs:element type="xs:float" name="C_ic_4"/>
+                          <xs:element type="xs:float" name="C_is_4"/>
+                          <xs:element type="xs:float" name="t0e_1"/>
+                          <xs:element type="xs:float" name="t0c_4"/>
+                          <xs:element type="xs:float" name="af0_4"/>
+                          <xs:element type="xs:float" name="af1_4"/>
+                          <xs:element type="xs:float" name="af2_4"/>
+                        </xs:sequence>
+                        <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                        <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                        <xs:attribute type="xs:byte" name="version" use="optional"/>
+                      </xs:complexType>
+                    </xs:element>
+                  </xs:sequence>
+                  <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                  <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                  <xs:attribute type="xs:byte" name="version" use="optional"/>
+                </xs:complexType>
+              </xs:element>
+            </xs:sequence>
+            <xs:attribute type="xs:byte" name="class_id"/>
+            <xs:attribute type="xs:byte" name="tracking_level"/>
+            <xs:attribute type="xs:byte" name="version"/>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+      <xs:attribute type="xs:string" name="signature"/>
+      <xs:attribute type="xs:byte" name="version"/>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>
diff --git a/docs/xml-schemas/gal_utc_model.xsd b/docs/xml-schemas/gal_utc_model.xsd
new file mode 100644
index 000000000..a589f94fb
--- /dev/null
+++ b/docs/xml-schemas/gal_utc_model.xsd
@@ -0,0 +1,28 @@
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="boost_serialization">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="GNSS-SDR_gal_utc_model">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element type="xs:float" name="A0_6"/>
+              <xs:element type="xs:float" name="A1_6"/>
+              <xs:element type="xs:float" name="Delta_tLS_6"/>
+              <xs:element type="xs:float" name="t0t_6"/>
+              <xs:element type="xs:float" name="WNot_6"/>
+              <xs:element type="xs:float" name="WN_LSF_6"/>
+              <xs:element type="xs:float" name="DN_6"/>
+              <xs:element type="xs:float" name="Delta_tLSF_6"/>
+              <xs:element type="xs:byte" name="flag_utc_model"/>
+            </xs:sequence>
+            <xs:attribute type="xs:byte" name="class_id"/>
+            <xs:attribute type="xs:byte" name="tracking_level"/>
+            <xs:attribute type="xs:byte" name="version"/>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+      <xs:attribute type="xs:string" name="signature"/>
+      <xs:attribute type="xs:byte" name="version"/>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>
diff --git a/docs/xml-schemas/gps_almanac_map.xsd b/docs/xml-schemas/gps_almanac_map.xsd
new file mode 100644
index 000000000..818dc49c3
--- /dev/null
+++ b/docs/xml-schemas/gps_almanac_map.xsd
@@ -0,0 +1,52 @@
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="boost_serialization">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="GNSS-SDR_gps_almanac_map">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element type="xs:byte" name="count"/>
+              <xs:element type="xs:byte" name="item_version"/>
+              <xs:element name="item" maxOccurs="unbounded" minOccurs="0">
+                <xs:complexType>
+                  <xs:sequence>
+                    <xs:element type="xs:byte" name="first"/>
+                    <xs:element name="second">
+                      <xs:complexType>
+                        <xs:sequence>
+                          <xs:element type="xs:byte" name="i_satellite_PRN"/>
+                          <xs:element type="xs:float" name="d_Delta_i"/>
+                          <xs:element type="xs:float" name="d_Toa"/>
+                          <xs:element type="xs:float" name="d_M_0"/>
+                          <xs:element type="xs:float" name="d_e_eccentricity"/>
+                          <xs:element type="xs:float" name="d_sqrt_A"/>
+                          <xs:element type="xs:float" name="d_OMEGA0"/>
+                          <xs:element type="xs:float" name="d_OMEGA"/>
+                          <xs:element type="xs:float" name="d_OMEGA_DOT"/>
+                          <xs:element type="xs:byte" name="i_SV_health"/>
+                          <xs:element type="xs:float" name="d_A_f0"/>
+                          <xs:element type="xs:float" name="d_A_f1"/>
+                        </xs:sequence>
+                        <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                        <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                        <xs:attribute type="xs:byte" name="version" use="optional"/>
+                      </xs:complexType>
+                    </xs:element>
+                  </xs:sequence>
+                  <xs:attribute type="xs:byte" name="class_id" use="optional"/>
+                  <xs:attribute type="xs:byte" name="tracking_level" use="optional"/>
+                  <xs:attribute type="xs:byte" name="version" use="optional"/>
+                </xs:complexType>
+              </xs:element>
+            </xs:sequence>
+            <xs:attribute type="xs:byte" name="class_id"/>
+            <xs:attribute type="xs:byte" name="tracking_level"/>
+            <xs:attribute type="xs:byte" name="version"/>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+      <xs:attribute type="xs:string" name="signature"/>
+      <xs:attribute type="xs:byte" name="version"/>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>
diff --git a/docs/xml-schemas/iono_model.xsd b/docs/xml-schemas/iono_model.xsd
new file mode 100644
index 000000000..26cda74bd
--- /dev/null
+++ b/docs/xml-schemas/iono_model.xsd
@@ -0,0 +1,27 @@
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="boost_serialization">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="GNSS-SDR_iono_model">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element type="xs:float" name="d_alpha0"/>
+              <xs:element type="xs:float" name="d_alpha1"/>
+              <xs:element type="xs:float" name="d_alpha2"/>
+              <xs:element type="xs:float" name="d_alpha3"/>
+              <xs:element type="xs:float" name="d_beta0"/>
+              <xs:element type="xs:float" name="d_beta1"/>
+              <xs:element type="xs:float" name="d_beta2"/>
+              <xs:element type="xs:float" name="d_beta3"/>
+            </xs:sequence>
+            <xs:attribute type="xs:byte" name="class_id"/>
+            <xs:attribute type="xs:byte" name="tracking_level"/>
+            <xs:attribute type="xs:byte" name="version"/>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+      <xs:attribute type="xs:string" name="signature"/>
+      <xs:attribute type="xs:byte" name="version"/>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>
diff --git a/docs/xml-schemas/utc_model.xsd b/docs/xml-schemas/utc_model.xsd
new file mode 100644
index 000000000..44005a628
--- /dev/null
+++ b/docs/xml-schemas/utc_model.xsd
@@ -0,0 +1,28 @@
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="boost_serialization">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="GNSS-SDR_utc_model">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element type="xs:byte" name="valid"/>
+              <xs:element type="xs:float" name="d_A1"/>
+              <xs:element type="xs:float" name="d_A0"/>
+              <xs:element type="xs:float" name="d_t_OT"/>
+              <xs:element type="xs:short" name="i_WN_T"/>
+              <xs:element type="xs:float" name="d_DeltaT_LS"/>
+              <xs:element type="xs:short" name="i_WN_LSF"/>
+              <xs:element type="xs:byte" name="i_DN"/>
+              <xs:element type="xs:float" name="d_DeltaT_LSF"/>
+            </xs:sequence>
+            <xs:attribute type="xs:byte" name="class_id"/>
+            <xs:attribute type="xs:byte" name="tracking_level"/>
+            <xs:attribute type="xs:byte" name="version"/>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+      <xs:attribute type="xs:string" name="signature"/>
+      <xs:attribute type="xs:byte" name="version"/>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>

From d04c4b3f1e1eef8c1d993e3e890aa5e735aa2f63 Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Thu, 25 Oct 2018 21:45:46 +0200
Subject: [PATCH 02/10] Add Galileo ionospheric model

---
 docs/xml-schemas/README.md          |  5 +++--
 docs/xml-schemas/gal_iono_model.xsd | 29 +++++++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 2 deletions(-)
 create mode 100644 docs/xml-schemas/gal_iono_model.xsd

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
index bd1a06a78..ab5a9b37f 100644
--- a/docs/xml-schemas/README.md
+++ b/docs/xml-schemas/README.md
@@ -20,9 +20,10 @@ GPS L2C and L5
  - [cnav_ephemeris_map.xsd](./cnav_ephemeris_map.xsd)
  
  
-Galileo OS
-----------
+Galileo
+-------
 
  - [gal_ephemeris_map.xsd](./gal_ephemeris_map.xsd)
  - [gal_utc_model.xsd](./gal_utc_model.xsd)
+ - [gal_iono_model.xsd](./gal_iono_model.xsd)
  - [gal_almanac_map.xsd](./gal_almanac_map.xsd)
diff --git a/docs/xml-schemas/gal_iono_model.xsd b/docs/xml-schemas/gal_iono_model.xsd
new file mode 100644
index 000000000..dc0219273
--- /dev/null
+++ b/docs/xml-schemas/gal_iono_model.xsd
@@ -0,0 +1,29 @@
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:element name="boost_serialization">
+    <xs:complexType>
+      <xs:sequence>
+        <xs:element name="GNSS-SDR_gal_iono_model">
+          <xs:complexType>
+            <xs:sequence>
+              <xs:element type="xs:float" name="ai0_5"/>
+              <xs:element type="xs:float" name="ai1_5"/>
+              <xs:element type="xs:float" name="ai2_5"/>
+              <xs:element type="xs:byte" name="Region1_flag_5"/>
+              <xs:element type="xs:byte" name="Region2_flag_5"/>
+              <xs:element type="xs:byte" name="Region3_flag_5"/>
+              <xs:element type="xs:byte" name="Region4_flag_5"/>
+              <xs:element type="xs:byte" name="Region5_flag_5"/>
+              <xs:element type="xs:float" name="TOW_5"/>
+              <xs:element type="xs:float" name="WN_5"/>
+            </xs:sequence>
+            <xs:attribute type="xs:byte" name="class_id"/>
+            <xs:attribute type="xs:byte" name="tracking_level"/>
+            <xs:attribute type="xs:byte" name="version"/>
+          </xs:complexType>
+        </xs:element>
+      </xs:sequence>
+      <xs:attribute type="xs:string" name="signature"/>
+      <xs:attribute type="xs:byte" name="version"/>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>

From 443bd5afa6ab83f5c4aa90eb5945482cd9b39ed8 Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Thu, 25 Oct 2018 22:17:42 +0200
Subject: [PATCH 03/10] Add link to TTFF definition

---
 docs/xml-schemas/README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
index ab5a9b37f..2b3641a0c 100644
--- a/docs/xml-schemas/README.md
+++ b/docs/xml-schemas/README.md
@@ -1,6 +1,6 @@
 # XML Schemas for Assisted GNSS-SDR
 
-GNSS-SDR can read assistance data from [Extensible Markup Language (XML)](https://www.w3.org/XML/) files, and can store navigation data decoded from GNSS signals in the same format. This page provides XML Schemas which describe the structure for those XML files.
+GNSS-SDR can read assistance data from [Extensible Markup Language (XML)](https://www.w3.org/XML/) files for faster [Time-To-First-Fix](https://gnss-sdr.org/design-forces/availability/#time-to-first-fix-ttff), and can store navigation data decoded from GNSS signals in the same format. This folder provides XML Schemas which describe those XML files structure.
 
 [XSD (XML Schema Definition)](https://www.w3.org/XML/Schema) is a World Wide Web Consortium (W3C) recommendation that specifies how to formally describe the elements in an XML document.
 
@@ -24,6 +24,6 @@ Galileo
 -------
 
  - [gal_ephemeris_map.xsd](./gal_ephemeris_map.xsd)
- - [gal_utc_model.xsd](./gal_utc_model.xsd)
  - [gal_iono_model.xsd](./gal_iono_model.xsd)
+ - [gal_utc_model.xsd](./gal_utc_model.xsd)
  - [gal_almanac_map.xsd](./gal_almanac_map.xsd)

From 8cbc14ce9d42a2bb5a687c97fea979d932a92ded Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Thu, 25 Oct 2018 22:39:07 +0200
Subject: [PATCH 04/10] Add description of XSD files

---
 docs/xml-schemas/README.md | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
index 2b3641a0c..cba42485e 100644
--- a/docs/xml-schemas/README.md
+++ b/docs/xml-schemas/README.md
@@ -8,22 +8,22 @@ GNSS-SDR can read assistance data from [Extensible Markup Language (XML)](https:
 GPS L1 C/A
 ----------
 
- - [ephemeris_map.xsd](./ephemeris_map.xsd)
- - [iono_model.xsd](./iono_model.xsd)
- - [utc_model.xsd](./utc_model.xsd)
- - [gps_almanac_map.xsd](./gps_almanac_map.xsd)
+ - [ephemeris_map.xsd](./ephemeris_map.xsd) - GPS NAV message ephemeris parameters.
+ - [iono_model.xsd](./iono_model.xsd) - GPS NAV message ionospheric model parameters.
+ - [utc_model.xsd](./utc_model.xsd) - GPS NAV message UTC model parameters.
+ - [gps_almanac_map.xsd](./gps_almanac_map.xsd) - GPS NAV messsage almanac.
  
  
 GPS L2C and L5
 --------------
  
- - [cnav_ephemeris_map.xsd](./cnav_ephemeris_map.xsd)
+ - [cnav_ephemeris_map.xsd](./cnav_ephemeris_map.xsd) - GPS CNAV message ephemeris parameters.
  
  
 Galileo
 -------
 
- - [gal_ephemeris_map.xsd](./gal_ephemeris_map.xsd)
- - [gal_iono_model.xsd](./gal_iono_model.xsd)
- - [gal_utc_model.xsd](./gal_utc_model.xsd)
- - [gal_almanac_map.xsd](./gal_almanac_map.xsd)
+ - [gal_ephemeris_map.xsd](./gal_ephemeris_map.xsd) - Galileo ephemeris parameters.
+ - [gal_iono_model.xsd](./gal_iono_model.xsd) - Galileo ionospheric model parameters.
+ - [gal_utc_model.xsd](./gal_utc_model.xsd) - Galileo UTC model parameters.
+ - [gal_almanac_map.xsd](./gal_almanac_map.xsd) - Galileo almanac.

From f7b324023d2adb2829e82a47c494c5d62abd8f7c Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Thu, 25 Oct 2018 22:44:01 +0200
Subject: [PATCH 05/10] Fix typo

---
 docs/xml-schemas/README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
index cba42485e..c79fa1726 100644
--- a/docs/xml-schemas/README.md
+++ b/docs/xml-schemas/README.md
@@ -1,6 +1,6 @@
 # XML Schemas for Assisted GNSS-SDR
 
-GNSS-SDR can read assistance data from [Extensible Markup Language (XML)](https://www.w3.org/XML/) files for faster [Time-To-First-Fix](https://gnss-sdr.org/design-forces/availability/#time-to-first-fix-ttff), and can store navigation data decoded from GNSS signals in the same format. This folder provides XML Schemas which describe those XML files structure.
+GNSS-SDR can read assistance data from [Extensible Markup Language (XML)](https://www.w3.org/XML/) files for faster [Time-To-First-Fix](https://gnss-sdr.org/design-forces/availability/#time-to-first-fix-ttff), and can store navigation data decoded from GNSS signals in the same format. This folder provides XML Schemas which describe those XML files' structure.
 
 [XSD (XML Schema Definition)](https://www.w3.org/XML/Schema) is a World Wide Web Consortium (W3C) recommendation that specifies how to formally describe the elements in an XML document.
 
@@ -11,7 +11,7 @@ GPS L1 C/A
  - [ephemeris_map.xsd](./ephemeris_map.xsd) - GPS NAV message ephemeris parameters.
  - [iono_model.xsd](./iono_model.xsd) - GPS NAV message ionospheric model parameters.
  - [utc_model.xsd](./utc_model.xsd) - GPS NAV message UTC model parameters.
- - [gps_almanac_map.xsd](./gps_almanac_map.xsd) - GPS NAV messsage almanac.
+ - [gps_almanac_map.xsd](./gps_almanac_map.xsd) - GPS NAV message almanac.
  
  
 GPS L2C and L5

From 5ac848e73503b47607615d9e48dce38a4015d649 Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Thu, 25 Oct 2018 22:49:48 +0200
Subject: [PATCH 06/10] Fix typo

---
 docs/xml-schemas/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
index c79fa1726..059279ea1 100644
--- a/docs/xml-schemas/README.md
+++ b/docs/xml-schemas/README.md
@@ -1,6 +1,6 @@
 # XML Schemas for Assisted GNSS-SDR
 
-GNSS-SDR can read assistance data from [Extensible Markup Language (XML)](https://www.w3.org/XML/) files for faster [Time-To-First-Fix](https://gnss-sdr.org/design-forces/availability/#time-to-first-fix-ttff), and can store navigation data decoded from GNSS signals in the same format. This folder provides XML Schemas which describe those XML files' structure.
+GNSS-SDR can read assistance data from [Extensible Markup Language (XML)](https://www.w3.org/XML/) files for faster [Time-To-First-Fix](https://gnss-sdr.org/design-forces/availability/#time-to-first-fix-ttff), and can store navigation data decoded from GNSS signals in the same format. This folder provides XML Schemas which describe those XML files structure.
 
 [XSD (XML Schema Definition)](https://www.w3.org/XML/Schema) is a World Wide Web Consortium (W3C) recommendation that specifies how to formally describe the elements in an XML document.
 

From ebc6ffa6b899f73656d502aba3fb325b691d7529 Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Fri, 26 Oct 2018 09:13:29 +0200
Subject: [PATCH 07/10] Add link to the documentation page

---
 docs/xml-schemas/README.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
index 059279ea1..c74912386 100644
--- a/docs/xml-schemas/README.md
+++ b/docs/xml-schemas/README.md
@@ -27,3 +27,8 @@ Galileo
  - [gal_iono_model.xsd](./gal_iono_model.xsd) - Galileo ionospheric model parameters.
  - [gal_utc_model.xsd](./gal_utc_model.xsd) - Galileo UTC model parameters.
  - [gal_almanac_map.xsd](./gal_almanac_map.xsd) - Galileo almanac.
+
+-------
+
+ Please check https//gnss-sdr.org/sp-blocks/global-parameters/ for more information about the usage of XML files in GNSS-SDR.
+ 

From 5dbf59ee4f850f37db4fa67eb12ef05afb8a0d38 Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Fri, 26 Oct 2018 09:34:54 +0200
Subject: [PATCH 08/10] Fix link

---
 docs/xml-schemas/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
index c74912386..b04b7e3ab 100644
--- a/docs/xml-schemas/README.md
+++ b/docs/xml-schemas/README.md
@@ -30,5 +30,5 @@ Galileo
 
 -------
 
- Please check https//gnss-sdr.org/sp-blocks/global-parameters/ for more information about the usage of XML files in GNSS-SDR.
+Please check [https//gnss-sdr.org/sp-blocks/global-parameters/](https//gnss-sdr.org/sp-blocks/global-parameters/) for more information about the usage of XML files in GNSS-SDR.
  

From 59efffb4dd1d31425612beb809e62f72d13d661c Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Fri, 26 Oct 2018 09:36:35 +0200
Subject: [PATCH 09/10] Fix link

---
 docs/xml-schemas/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
index b04b7e3ab..9f4bcb0df 100644
--- a/docs/xml-schemas/README.md
+++ b/docs/xml-schemas/README.md
@@ -30,5 +30,5 @@ Galileo
 
 -------
 
-Please check [https//gnss-sdr.org/sp-blocks/global-parameters/](https//gnss-sdr.org/sp-blocks/global-parameters/) for more information about the usage of XML files in GNSS-SDR.
+Please check https://gnss-sdr.org/sp-blocks/global-parameters/ for more information about the usage of XML files in GNSS-SDR.
  

From e56d0cf0183e2698c29708981c8c43756dcfd43e Mon Sep 17 00:00:00 2001
From: Carles Fernandez <carles.fernandez@gmail.com>
Date: Fri, 26 Oct 2018 09:38:17 +0200
Subject: [PATCH 10/10] Fix link :-)

---
 docs/xml-schemas/README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/xml-schemas/README.md b/docs/xml-schemas/README.md
index 9f4bcb0df..e85c643fe 100644
--- a/docs/xml-schemas/README.md
+++ b/docs/xml-schemas/README.md
@@ -30,5 +30,5 @@ Galileo
 
 -------
 
-Please check https://gnss-sdr.org/sp-blocks/global-parameters/ for more information about the usage of XML files in GNSS-SDR.
+Please check https://gnss-sdr.org/docs/sp-blocks/global-parameters/ for more information about the usage of XML files in GNSS-SDR.