mirror of
https://github.com/gnss-sdr/gnss-sdr
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83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
/*!
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* \file gnss_signal_processing.h
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* \brief This library gathers a few functions used by the algorithms of gnss-sdr,
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* regardless of system used
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*
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* \author Luis Esteve, 2012. luis(at)epsilon-formacion.com
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*
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* Detailed description of the file here if needed.
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2018 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GNSS-SDR is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <https://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_GNSS_SIGNAL_PROCESSING_H_
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#define GNSS_SDR_GNSS_SIGNAL_PROCESSING_H_
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#include <complex>
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#include <cstdint>
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#if HAS_SPAN
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#include <span>
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namespace gsl = std;
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#else
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#include <gsl/gsl>
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#endif
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/*!
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* \brief This function generates a complex exponential in _dest.
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*
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*/
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void complex_exp_gen(gsl::span<std::complex<float>> _dest, double _f, double _fs);
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/*!
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* \brief This function generates a conjugate complex exponential in _dest.
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*
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*/
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void complex_exp_gen_conj(gsl::span<std::complex<float>> _dest, double _f, double _fs);
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/*!
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* \brief This function makes a conversion from hex (the input is a char)
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* to binary (the output are 4 ints with +1 or -1 values).
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*
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*/
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void hex_to_binary_converter(gsl::span<int32_t> _dest, char _from);
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/*!
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* \brief This function resamples a sequence of float values.
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*
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*/
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void resampler(const gsl::span<float> _from, gsl::span<float> _dest,
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float _fs_in, float _fs_out);
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/*!
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* \brief This function resamples a sequence of complex values.
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*
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*/
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void resampler(gsl::span<const std::complex<float>> _from, gsl::span<std::complex<float>> _dest,
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float _fs_in, float _fs_out);
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#endif /* GNSS_SDR_GNSS_SIGNAL_PROCESSING_H_ */
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