GNU Radio's SATELLITES Package

doppler_correction_impl.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2022 Daniel Estevez <daniel@destevez.net>.
4 *
5 * This file is part of gr-satellites
6 *
7 * SPDX-License-Identifier: GPL-3.0-or-later
8 */
9
10#ifndef INCLUDED_SATELLITES_DOPPLER_CORRECTION_IMPL_H
11#define INCLUDED_SATELLITES_DOPPLER_CORRECTION_IMPL_H
12
13#include <gnuradio/math.h>
14#include <satellites/doppler_correction.h>
15#include <vector>
16
17 namespace gr {
18 namespace satellites {
19
20 class doppler_correction_impl : public doppler_correction
21{
22 private:
23 float d_phase;
24 double d_samp_rate;
25 size_t d_current_index;
26 double d_t0;
27 int d_sample_t0;
28 std::vector<double> times;
29 std::vector<double> freqs_rad_per_sample;
30 std::vector<tag_t> d_tags;
31 const pmt::pmt_t d_rx_time_key;
32
33 // Implementation taken from gr::block::control_loop
34 void phase_wrap()
35 {
36 while (d_phase > (2 * GR_M_PI))
37 d_phase -= 2 * GR_M_PI;
38 while (d_phase < (-2 * GR_M_PI))
39 d_phase += 2 * GR_M_PI;
40 }
41
42 void read_doppler_file(const char* filename);
43
44 public:
45 doppler_correction_impl(const char* filename, double samp_rate, double t0);
46 ~doppler_correction_impl();
47
48 int work(int noutput_items,
49 gr_vector_const_void_star& input_items,
50 gr_vector_void_star& output_items);
51};
52
53} // namespace satellites
54} // namespace gr
55
56#endif /* INCLUDED_SATELLITES_DOPPLER_CORRECTION_IMPL_H */
gr::satellites::doppler_correction_impl::doppler_correction_impl
doppler_correction_impl(const char *filename, double samp_rate, double t0)
gr::satellites::doppler_correction_impl::~doppler_correction_impl
~doppler_correction_impl()
gr::satellites::doppler_correction_impl::work
int work(int noutput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
gr::satellites::doppler_correction
Performs Doppler correction using a frequency vs. time file.
Definition doppler_correction.h:46
doppler_correction.h
gr::satellites
Definition ax100_decode.h:18
gr
Definition ax100_decode.h:17