mirror of
https://github.com/gnss-sdr/gnss-sdr
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57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
/*!
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* \file tracking_FLL_PLL_filter.h
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* \brief Interface of a 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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* -----------------------------------------------------------------------------
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2010-2020 (see AUTHORS file for a list of contributors)
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* SPDX-License-Identifier: GPL-3.0-or-later
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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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/** \addtogroup Tracking
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* \{ */
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/** \addtogroup Tracking_libs
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* \{ */
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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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public:
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Tracking_FLL_PLL_filter();
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~Tracking_FLL_PLL_filter() = default;
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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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private:
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// FLL + PLL filter parameters
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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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int d_order;
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};
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/** \} */
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/** \} */
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#endif
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