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Fix two-step acquisition for Glonass signals

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This commit is contained in:
Carles Fernandez
2026-06-11 15:22:50 +02:00
parent b6fe42e19c
commit aa8d5426f5
1 changed files with 3 additions and 1 deletions
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src/algorithms/acquisition/gnuradio_blocks/pcps_acquisition.cc
+3 -1
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@@ -296,7 +296,9 @@ void pcps_acquisition::update_grid_doppler_wipeoffs_step2()
for (uint32_t doppler_index = 0; doppler_index < d_num_doppler_bins_step2; doppler_index++)
{
const float doppler = (static_cast<float>(doppler_index) - static_cast<float>(floor(d_num_doppler_bins_step2 / 2.0))) * d_acq_parameters.doppler_step2;
update_local_carrier(d_grid_doppler_wipeoffs_step_two[doppler_index], d_doppler_center_step_two + doppler);
// d_doppler_center_step_two holds the unbiased Doppler reported by the coarse
// stage, so the FDMA frequency offset must be added back to the wipeoff
update_local_carrier(d_grid_doppler_wipeoffs_step_two[doppler_index], static_cast<float>(d_doppler_bias) + d_doppler_center_step_two + doppler);
}
}