mirror of https://github.com/gnss-sdr/gnss-sdr
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
#ifndef GPS_SDR_SIGNAL_PROCESSING_H_
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#define GPS_SDR_SIGNAL_PROCESSING_H_
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#include "gps_sdr_defines.h"
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#include <complex>
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#include <iostream>
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/*
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* Signal processing functions from gps-sdr.
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*/
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/*----------------------------------------------------------------------------------------------*/
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/*! @ingroup STRUCTS
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* @brief Define the CPX structure, used in the Fine_Acquisition FFT */
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typedef struct CPX
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{
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int16 i; //!< Real value
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int16 q; //!< Imaginary value
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} CPX;
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/*! \ingroup STRUCTS
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* @brief Format of complex accumulations */
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typedef struct CPX_ACCUM {
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int32 i; //!< Inphase (real)
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int32 q; //!< Quadrature (imaginary)
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} CPX_ACCUM;
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/*! \ingroup STRUCTS
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*
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*/
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typedef struct MIX {
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int16 i; //!< Inphase (real)
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int16 nq; //!< Quadrature (imaginary)
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int16 q; //!< Quadrature (imaginary)
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int16 ni; //!< Inphase (real)
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} MIX;
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/*----------------------------------------------------------------------------------------------*/
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void code_gen_conplex(std::complex<float>* _dest, int32 _prn, unsigned int _chip_shift);
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void code_gen_complex_sampled(std::complex<float>* _dest, unsigned int _prn, int32 _fs, unsigned int _chip_shift);
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int32 code_gen(CPX *_dest, int32 _prn);
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void sine_gen(CPX *_dest, double _f, double _fs, int32 _samps);
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void sine_gen_complex(std::complex<float>* _dest, double _f, double _fs, unsigned int _samps);
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void sine_gen(CPX *_dest, double _f, double _fs, int32 _samps, double _p);
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void wipeoff_gen(MIX *_dest, double _f, double _fs, int32 _samps);
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void downsample(CPX *_dest, CPX *_source, double _fdest, double _fsource, int32 _samps);
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void init_agc(CPX *_buff, int32 _samps, int32 bits, int32 *scale);
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int32 run_agc(CPX *_buff, int32 _samps, int32 bits, int32 scale);
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#endif /* GPS_SDR_SIGNAL_PROCESSING_H_ */
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