mirror of https://github.com/gnss-sdr/gnss-sdr
63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
/*!
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* \file tracking_FLL_PLL_filter.h
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* \brief Class that implements hybrid FLL and PLL filter for tracking carrier loop
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* \author Javier Arribas, 2011. jarribas(at)cttc.es
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*
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* Class that implements hybrid FLL and PLL filter for tracking carrier loop
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2011 (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 <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_TRACKING_FLL_PLL_FILTER_H_
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#define GNSS_SDR_TRACKING_FLL_PLL_FILTER_H_
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/*!
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* \brief This class implements a hybrid FLL and PLL filter for tracking carrier loop
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*/
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class tracking_FLL_PLL_filter
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{
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private:
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// FLL + PLL filter parameters
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int d_order;
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float d_pll_w;
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float d_pll_w0p3;
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float d_pll_w0f2;
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float d_pll_x;
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float d_pll_a2;
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float d_pll_w0f;
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float d_pll_a3;
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float d_pll_w0p2;
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float d_pll_b3;
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float d_pll_w0p;
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public:
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void set_params(float fll_bw_hz,float pll_bw_hz, int order);
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void initialize(float d_acq_carrier_doppler_hz);
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float get_carrier_error(float FLL_discriminator, float PLL_discriminator, float correlation_time_s);
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tracking_FLL_PLL_filter();
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~tracking_FLL_PLL_filter();
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};
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#endif
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