transmitter.cpp

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// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright (c) 2006-2008 Marc Brooker and Michael Inggs
// Copyright (c) 2008-present FERS Contributors (see AUTHORS.md).
//
// See the GNU GPLv2 LICENSE file in the FERS project root for more information.
 
/**
 * @file transmitter.cpp
 * @brief Contains the implementation of the Transmitter class.
 */
 
#include "transmitter.h"
 
#include "core/parameters.h"
#include "signal/radar_signal.h"
 
namespace radar
{
    const fers_signal::FmcwChirpSignal* Transmitter::getFmcwSignal() const noexcept
    {
        return (_signal != nullptr) ? _signal->getFmcwChirpSignal() : nullptr;
    }
 
    void Transmitter::setPrf(const RealType mprf) noexcept
    {
        const RealType rate = params::rate() * params::oversampleRatio();
        _prf = 1 / (std::floor(rate / mprf) / rate);
    }
 
    void Transmitter::setSchedule(std::vector<SchedulePeriod> schedule)
    {
        // The schedule is assumed to be sorted and merged by the parser.
        _schedule = std::move(schedule);
    }
 
    std::optional<RealType> Transmitter::getNextPulseTime(RealType time) const
    {
        // If no schedule is defined, assume always on.
        if (_schedule.empty())
        {
            return time;
        }
 
        for (const auto& period : _schedule)
        {
            // If time is within this period, it's valid.
            if (time >= period.start && time <= period.end)
            {
                return time;
            }
            // If time is before this period, skip to the start of this period.
            if (time < period.start)
            {
                return period.start;
            }
            // If time is after this period, continue to next period.
        }
 
        // Time is after the last scheduled period.
        return std::nullopt;
    }
}