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/* -*- c++ -*- */
/* GNU GENERAL PUBLIC LICENSE
* Version 3, 29 June 2007
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* Program, unless a warranty or assumption of liability accompanies a
* copy of the Program in return for a fee.
*
* END OF TERMS AND CONDITIONS
*
* How to Apply These Terms to Your New Programs
*
* If you develop a new program, and you want it to be of the greatest
* possible use to the public, the best way to achieve this is to make it
* free software which everyone can redistribute and change under these terms.
*
* To do so, attach the following notices to the program. It is safest
* to attach them to the start of each source file to most effectively
* state the exclusion of warranty; and each file should have at least
* the "copyright" line and a pointer to where the full notice is found.
*
* {one line to give the program's name and a brief idea of what it does.}
* Copyright (C) {year} {name of author}
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Also add information on how to contact you by electronic and paper mail.
*
* If the program does terminal interaction, make it output a short
* notice like this when it starts in an interactive mode:
*
* {project} Copyright (C) {year} {fullname}
* This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
* This is free software, and you are welcome to redistribute it
* under certain conditions; type `show c' for details.
*
* The hypothetical commands `show w' and `show c' should show the appropriate
* parts of the General Public License. Of course, your program's commands
* might be different; for a GUI interface, you would use an "about box".
*
* You should also get your employer (if you work as a programmer) or school,
* if any, to sign a "copyright disclaimer" for the program, if necessary.
* For more information on this, and how to apply and follow the GNU GPL, see
* <http://www.gnu.org/licenses/>.
*
* The GNU General Public License does not permit incorporating your program
* into proprietary programs. If your program is a subroutine library, you
* may consider it more useful to permit linking proprietary applications with
* the library. If this is what you want to do, use the GNU Lesser General
* Public License instead of this License. But first, please read
* <http://www.gnu.org/philosophy/why-not-lgpl.html>.
*/
#ifndef INCLUDED_SATNOGS_LEO_CHANNEL_H
#define INCLUDED_SATNOGS_LEO_CHANNEL_H
#include <satnogs/api.h>
#include <gnuradio/sync_block.h>
namespace gr
{
namespace satnogs
{
/*!
* \brief Channel model that emulates the signal of a LEO satellite.
* It adds the proper doppler shift and in the future will emulate also
* the signal fading based on the sattelite position.
*
* \ingroup satnogs
*
*/
class SATNOGS_API leo_channel : virtual public gr::sync_block
{
public:
typedef boost::shared_ptr<leo_channel> sptr;
/*!
* \brief Return a shared_ptr to a new instance of satnogs::leo_channel.
*
* To avoid accidental use of raw pointers, satnogs::leo_channel's
* constructor is in a private implementation
* class. satnogs::leo_channel::make is the public interface for
* creating new instances.
*/
static sptr
make (const double freq, const double samp_rate,
const double sat_altitude,
const double sat_inclination,
const size_t pass_duration_sec = 420,
const size_t freq_shifts_per_sec = 100);
};
} // namespace satnogs
} // namespace gr
#endif /* INCLUDED_SATNOGS_LEO_CHANNEL_H */
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