mirrors/gnss-sdr
1
0
Fork 0
mirror of https://github.com/gnss-sdr/gnss-sdr synced 2025-10-31 15:23:04 +00:00
Code Issues Releases Wiki Activity

Fix B3I code generation

Browse Source
This commit is contained in:
Carles Fernandez
2019-07-16 08:53:59 +02:00
parent e7e936f97e
commit c36cb0cf4b
1 changed files with 3 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
src/algorithms/libs/beidou_b3i_signal_processing.cc
View File

@@ -42,8 +42,8 @@ void beidou_b3i_code_gen_int(gsl::span<int> _dest, signed int _prn, unsigned int
const unsigned int _code_length = 10230;
std::bitset<_code_length> G1{};
std::bitset<_code_length> G2{};
auto G1_register = std::move(std::bitset<13>{}.set()); // All true {true, true, true, true, true, true, true, true, true, true, true, true, true};
auto G2_register = std::move(std::bitset<13>{}.set()); // All true {true, true, true, true, true, true, true, true, true, true, true, true, true};
auto G1_register = std::move(std::bitset<13>{}.set()); // All true
auto G2_register = std::move(std::bitset<13>{}.set()); // All true
auto G1_register_reset = std::move(std::bitset<13>{}.set());
G1_register_reset.reset(0);
G1_register_reset.reset(1); // {false, false, true, true, true, true, true, true, true, true, true, true, true};
@@ -126,21 +126,12 @@ void beidou_b3i_code_gen_int(gsl::span<int> _dest, signed int _prn, unsigned int
// Assign shifted G2 register based on prn number
G2_register = G2_register_shifted[prn_idx];
// std::reverse(G2_register.begin(), G2_register.end());
for (std::size_t i = 0; i < 6; ++i)
{
bool t = G2_register[i];
G2_register[i] = G2_register[13 - i - 1];
G2_register[13 - i - 1] = t;
}
// Generate G1 and G2 Register
for (lcv = 0; lcv < _code_length; lcv++)
{
G1[lcv] = G1_register[0];
G2[lcv] = G2_register[0];
//feedback1 = (test_G1_register[0]+test_G1_register[2]+test_G1_register[3]+test_G1_register[12]) & 0x1;
feedback1 = G1_register[0] xor G1_register[9] xor G1_register[10] xor G1_register[12];
feedback2 = G2_register[0] xor G2_register[1] xor G2_register[3] xor G2_register[4] xor
G2_register[6] xor G2_register[7] xor G2_register[8] xor G2_register[12];
@@ -157,7 +148,7 @@ void beidou_b3i_code_gen_int(gsl::span<int> _dest, signed int _prn, unsigned int
// Reset G1 register if sequence found
if (G1_register == G1_register_reset)
{
G1_register = std::move(std::bitset<13>{}.set()); // All true {{true, true, true, true, true, true, true, true, true, true, true, true, true}};
G1_register = std::move(std::bitset<13>{}.set()); // All true
}
}