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Add work on OSNMA receiver

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This commit is contained in:
Carles Fernandez 2023-06-08 17:45:22 +02:00
parent 46442ee0fc
commit 9b560b6da2
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GPG Key ID: 4C583C52B0C3877D
4 changed files with 35 additions and 23 deletions
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19
src/algorithms/telemetry_decoder/gnuradio_blocks/galileo_telemetry_decoder_gs.cc
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@ -511,26 +511,7 @@ void galileo_telemetry_decoder_gs::decode_INAV_word(float *page_part_symbols, in
if (d_band == '1' && d_inav_nav.have_new_nma() == true)
{
const std::shared_ptr<OSNMA_msg> tmp_obj = std::make_shared<OSNMA_msg>(d_inav_nav.get_osnma_msg());
uint8_t nma_status = (tmp_obj->hkroot[0] & 0xC0) >> 6;
this->message_port_pub(pmt::mp("OSNMA_from_TLM"), pmt::make_any(tmp_obj));
std::string nma_status_string;
if (nma_status == 0)
{
nma_status_string = std::string("(Reserved mode)");
}
else if (nma_status == 1)
{
nma_status_string = std::string("(Test mode)");
}
else if (nma_status == 2)
{
nma_status_string = std::string("(Operational mode)");
}
else
{
nma_status_string = std::string("(Do not use mode)");
}
std::cout << "Galileo OSNMA message " << nma_status_string << " received in channel " << d_channel << " from satellite " << d_satellite << std::endl;
}
}

13
src/core/libs/osnma_msg_receiver.cc
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@ -20,6 +20,7 @@
#include "osnma_msg_receiver.h"
#include "Galileo_OSNMA.h"
#include "gnss_crypto.h"
#include "gnss_satellite.h"
#include "osnma_dsm_reader.h" // for OSNMA_DSM_Reader
#include <glog/logging.h> // for DLOG
#include <gnuradio/io_signature.h> // for gr::io_signature::make
@ -85,13 +86,14 @@ void osnma_msg_receiver::msg_handler_osnma(const pmt::pmt_t& msg)
if (msg_type_hash_code == typeid(std::shared_ptr<OSNMA_msg>).hash_code())
{
const auto nma_msg = wht::any_cast<std::shared_ptr<OSNMA_msg>>(pmt::any_ref(msg));
std::cout << "Galileo OSNMA: Subframe received at "
const auto sat = Gnss_Satellite(std::string("Galileo"), nma_msg->PRN);
std::cout << "Galileo OSNMA: Subframe received starting at "
<< "WN="
<< nma_msg->WN_sf0
<< ", TOW="
<< nma_msg->TOW_sf0
<< ", from SVID="
<< nma_msg->PRN
<< ", from satellite "
<< sat
<< std::endl;
process_osnma_message(nma_msg);
}
@ -336,8 +338,11 @@ void osnma_msg_receiver::process_dsm_message(const std::vector<uint8_t>& dsm_msg
std::cout << "Galileo OSNMA: KROOT with CID=" << static_cast<uint32_t>(d_osnma_data.d_nma_header.cid)
<< ", PKID=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.pkid)
<< ", WN=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.wn_k)
<< ", TOW=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.towh_k)
<< ", TOW=" << static_cast<uint32_t>(d_osnma_data.d_dsm_kroot_message.towh_k) * 3600
<< " validated" << std::endl;
std::cout << "Galileo OSNMA: NMAS is " << d_dsm_reader->get_nmas_status(d_osnma_data.d_nma_header.nmas) << ", "
<< " Chain in force is " << static_cast<uint32_t>(d_osnma_data.d_nma_header.cid) << ", "
<< "CPSK is " << d_dsm_reader->get_cpks_status(d_osnma_data.d_nma_header.cpks) << std::endl;
}
// Validate signature
}

24
src/core/system_parameters/osnma_dsm_reader.cc
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@ -202,3 +202,27 @@ uint8_t OSNMA_DSM_Reader::get_npktid(const std::vector<uint8_t>& dsm_msg) const
{
return (dsm_msg[129] & mask_dsm_npktid);
}
std::string OSNMA_DSM_Reader::get_nmas_status(uint8_t nmas) const
{
std::string status_;
const auto it = OSNMA_TABLE_1.find(nmas);
if (it != OSNMA_TABLE_1.cend())
{
status_ = it->second;
}
return status_;
}
std::string OSNMA_DSM_Reader::get_cpks_status(uint8_t cpks) const
{
std::string status_;
const auto it = OSNMA_TABLE_2.find(cpks);
if (it != OSNMA_TABLE_2.cend())
{
status_ = it->second;
}
return status_;
}

2
src/core/system_parameters/osnma_dsm_reader.h
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@ -55,6 +55,8 @@ public:
uint16_t get_lk_bits(uint8_t ks) const;
std::vector<uint8_t> get_kroot(const std::vector<uint8_t>& dsm_msg, uint16_t bytes_lk) const;
std::string get_hash_function(uint8_t hf) const;
std::string get_nmas_status(uint8_t nmas) const;
std::string get_cpks_status(uint8_t cpks) const;
uint8_t get_mid(const std::vector<uint8_t>& dsm_msg) const;
uint8_t get_npkt(const std::vector<uint8_t>& dsm_msg) const;