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some cleaning and optimization

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This commit is contained in:
Carles Fernandez
2015-05-07 22:25:46 +02:00
parent c24f312226
commit a7fba9f378
1 changed files with 16 additions and 12 deletions
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8
src/algorithms/libs/gps_l2c_signal.cc
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@@ -30,7 +30,7 @@
* -------------------------------------------------------------------------
*/
#include "GPS_L2C.h"
#include <gps_l2c_signal.h>
#include <stdlib.h>
#include <stdint.h>
#include <cmath>
@@ -95,6 +95,8 @@ void gps_l2c_m_code_gen_complex_sampled(std::complex<float>* _dest, unsigned int
_ts = 1/(float)_fs; // Sampling period in sec
_tc = 1/(float)_codeFreqBasis; // C/A chip period in sec
float aux;
for (signed int i = 0; i < _samplesPerCode; i++)
{
//=== Digitizing =======================================================
@@ -105,7 +107,9 @@ void gps_l2c_m_code_gen_complex_sampled(std::complex<float>* _dest, unsigned int
// millisecond).
//TODO: Check this formula! Seems to start with an extra sample
_codeValueIndex = ceil((_ts * ((float)i + 1)) / _tc) - 1;
// _codeValueIndex = ceil((_ts * ((float)i + 1)) / _tc) - 1;
aux = (_ts * (i + 1)) / _tc;
_codeValueIndex = static_cast<int>(static_cast<long>(aux)) - 1;
//--- Make the digitized version of the C/A code -----------------------
// The "upsampled" code is made by selecting values form the CA code