GNU Radio Radar Toolbox
signal_generator_fmcw_c.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2014 Communications Engineering Lab, KIT.
4  *
5  * This is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 3, or (at your option)
8  * any later version.
9  *
10  * This software is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this software; see the file COPYING. If not, write to
17  * the Free Software Foundation, Inc., 51 Franklin Street,
18  * Boston, MA 02110-1301, USA.
19  */
20 
21 #ifndef INCLUDED_RADAR_SIGNAL_GENERATOR_FMCW_C_H
22 #define INCLUDED_RADAR_SIGNAL_GENERATOR_FMCW_C_H
23 
24 #include <gnuradio/sync_block.h>
25 #include <radar/api.h>
26 
27 namespace gr {
28 namespace radar {
29 
30 /*! Generates a signal for FMCW radar in baseband.
31  *
32  * The generated signal consists of three parts, in this order:
33  *
34  * 1. CW part with constant frequency
35  * 2. Up-chirp
36  * 3. Down-chirp
37  *
38  * The up-chirp goes from CW frequency to CW frequency plus sweep frequency
39  * and the down-chirp goes in the opposite direction. All of these parts
40  * can be disabled by setting the corresponding length to zero.
41  *
42  * The packet length for subsequent tagged streams is calculated by the sum
43  * of the number of samples of the single modulations parts.
44  *
45  * \ingroup radar
46  */
47 class RADAR_API signal_generator_fmcw_c : virtual public gr::sync_block
48 {
49 public:
50  typedef boost::shared_ptr<signal_generator_fmcw_c> sptr;
51 
52  /*!
53  * \param samp_rate Signal sample rate (samples per second)
54  * \param samp_up Number samples of up-chirp part
55  * \param samp_down Number samples of down-chirp part
56  * \param samp_cw Number samples of CW part
57  * \param freq_cw CW signal frequency in baseband
58  * \param freq_sweep Sweep frequency of up- and down-chirp
59  * \param amplitude Signal amplitude
60  * \param len_key Packet length key for tagged stream
61  */
62  static sptr make(const int samp_rate,
63  const int samp_up,
64  const int samp_down,
65  const int samp_cw,
66  const float freq_cw,
67  const float freq_sweep,
68  const float amplitude,
69  const std::string& len_key = "packet_len");
70 };
71 
72 } // namespace radar
73 } // namespace gr
74 
75 #endif /* INCLUDED_RADAR_SIGNAL_GENERATOR_FMCW_C_H */
boost::shared_ptr< signal_generator_fmcw_c > sptr
Definition: signal_generator_fmcw_c.h:50
Definition: crop_matrix_vcvc.h:28
Definition: signal_generator_fmcw_c.h:47
#define RADAR_API
Definition: api.h:31