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https://github.com/f4exb/sdrangel.git
synced 2024-11-25 09:18:54 -05:00
Normalise pulse shaping. Enable RTTY Mod in Demod analyser.
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srcejon
parent
ad2bb38bfc
commit
0f0c1e108b
1
.gitignore
vendored
1
.gitignore
vendored
@ -43,3 +43,4 @@ obj-x86_64-linux-gnu/*
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/rescuesdriq/vendor/
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/rescuesdriq/Godeps/
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/.vs
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@ -32,6 +32,40 @@
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},
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"warnings": {
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"dev": false
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},
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"vendor": {
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"microsoft.com/VisualStudioSettings/CMake/1.0": {
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"hostOS": [ "Linux" ]
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}
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}
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},
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{
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// Don't inherit from "default", as we don't want UHD_DIR etc set
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"name": "default-windows",
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"binaryDir": "c:/users/jon/source/repos/sdrangel/build",
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"cacheVariables": {
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"CMAKE_BUILD_TYPE": "RelWithDebInfo",
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"DEBUG_OUTPUT": "ON",
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"RX_SAMPLE_24BIT": "ON",
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"DARCH_OPT": "SSE4_1",
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"HIDE_CONSOLE": "OFF",
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"ENABLE_AIRSPY": "ON",
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"ENABLE_BLADERF": "OFF",
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"ENABLE_HACKRF": "OFF",
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"ENABLE_IIO": "OFF",
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"ENABLE_MIRISDR": "OFF",
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"ENABLE_PERSEUS": "OFF",
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"ENABLE_XTRX": "OFF",
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"BUILD_SERVER": "OFF",
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"CMAKE_PREFIX_PATH": "C:/Qt/5.15.2/msvc2019_64;C:/Applications/boost_1_81_0"
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},
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"warnings": {
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"dev": false
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},
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"vendor": {
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"microsoft.com/VisualStudioSettings/CMake/1.0": {
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"hostOS": [ "Windows" ]
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}
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}
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},
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{
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@ -48,6 +82,10 @@
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"name": "default",
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"configurePreset": "default"
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},
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{
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"name": "default-windows",
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"configurePreset": "default-windows"
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},
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{
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"name": "default-qt6",
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"configurePreset": "default-qt6"
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@ -2,7 +2,10 @@
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<h2>Introduction</h2>
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This plugin can be used to transmit RTTY encoded text.
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This plugin can be used to modulate RTTY (Radioteletype) encoded text.
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RTTY uses BFSK (Binary Frequency Shift Keying), where transmission of data alternates between two frequencies,
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the mark frequency and the space frequency. The RTTY Modulator should be centered in between these frequencies.
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The baud rate, frequency shift (difference between mark and space frequencies), filter bandwidth and baudot character set are configurable.
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<h2>Interface</h2>
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@ -64,7 +67,14 @@ UDP port number to receive text to be transmitted on.
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<h3>13: Baudot Character Set</h3>
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Specifies the Baudot character set used to encode the text to transmit.
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Specifies the Baudot character set used to encode the text to transmit. The following character sets are supported:
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* ITA 2
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* UK
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* European
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* US
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* Russian
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* Murray
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<h3>14: Bit Ordering</h3>
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@ -90,11 +100,20 @@ Press to clear the transmitted text.
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Enter text to transmit. Pressing return will transmit the text and clear this field. Press the arrow to display and select a list of pre-defined text or previously transmitted text to enter in to the field.
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The list of pre-defined text can be customised via the Transmit Settings dialog (20).
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<h3>20: TX</h3>
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Press to transmits the current text. The text field will not be cleared.
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Press to transmit the current text. The text field will not be cleared.
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Right click to open a dialog to adjust additional transmitter settings.
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Right click to open a dialog to adjust additional Transmit Settings, including the list of pre-defined text.
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Predefined text supports the following variable substitutions:
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* ${callsign} - Gets replaced with the station name from Preferences > My Position
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* ${location} = Gets replaced with the Maidenhead locator for the position specified under Preferences > My Position
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The substitutions are applied when the Transmit Settings dialog is closed.
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<h2>API</h2>
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@ -43,7 +43,7 @@ RttyModSource::RttyModSource() :
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{
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m_bits.append(0);
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m_lowpass.create(301, m_channelSampleRate, 400.0 / 2.0);
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m_pulseShape.create(0.5, 6, m_channelSampleRate/45.45);
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m_pulseShape.create(0.5, 6, m_channelSampleRate / 45.45, true);
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m_demodBuffer.resize(1<<12);
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m_demodBufferFill = 0;
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@ -121,7 +121,7 @@ void RttyModSource::sampleToSpectrum(Complex sample)
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void RttyModSource::modulateSample()
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{
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Real audioMod;
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Real mod;
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if (m_sampleIdx == 0)
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{
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@ -154,18 +154,18 @@ void RttyModSource::modulateSample()
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if (m_settings.m_pulseShaping)
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{
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if (m_sampleIdx == 1) {
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audioMod = m_pulseShape.filter(m_bit ? 1.0f : -1.0f);
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mod = m_pulseShape.filter(m_bit ? 1.0f : -1.0f);
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} else {
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audioMod = m_pulseShape.filter(0.0f);
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mod = m_pulseShape.filter(0.0f);
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}
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}
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else
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{
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audioMod = m_bit ? 1.0f : -1.0f;
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mod = m_bit ? 1.0f : -1.0f;
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}
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// FM
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m_fmPhase += m_phaseSensitivity * audioMod * (m_settings.m_spaceHigh ? -1.0f : 1.0f);
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m_fmPhase += m_phaseSensitivity * mod * (m_settings.m_spaceHigh ? -1.0f : 1.0f);
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// Keep phase in range -pi,pi
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if (m_fmPhase > M_PI) {
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m_fmPhase -= 2.0f * M_PI;
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@ -194,7 +194,8 @@ void RttyModSource::modulateSample()
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Real s = std::real(m_modSample);
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calculateLevel(s);
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m_demodBuffer[m_demodBufferFill] = audioMod * std::numeric_limits<int16_t>::max();
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// Send to demod analyser
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m_demodBuffer[m_demodBufferFill] = mod * std::numeric_limits<int16_t>::max();
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++m_demodBufferFill;
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if (m_demodBufferFill >= m_demodBuffer.size())
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@ -258,7 +259,7 @@ void RttyModSource::applySettings(const RttyModSettings& settings, bool force)
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<< " symbolSpan: " << settings.m_symbolSpan
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<< " channelSampleRate:" << m_channelSampleRate
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<< " baud:" << settings.m_baud;
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m_pulseShape.create(settings.m_beta, m_settings.m_symbolSpan, m_channelSampleRate/settings.m_baud);
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m_pulseShape.create(settings.m_beta, settings.m_symbolSpan, m_channelSampleRate/settings.m_baud, true);
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}
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if ((settings.m_characterSet != m_settings.m_characterSet) || force) {
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@ -302,7 +303,7 @@ void RttyModSource::applyChannelSettings(int channelSampleRate, int channelFrequ
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<< " symbolSpan: " << m_settings.m_symbolSpan
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<< " channelSampleRate:" << m_channelSampleRate
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<< " baud:" << m_settings.m_baud;
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m_pulseShape.create(m_settings.m_beta, m_settings.m_symbolSpan, channelSampleRate/m_settings.m_baud);
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m_pulseShape.create(m_settings.m_beta, m_settings.m_symbolSpan, channelSampleRate/m_settings.m_baud, true);
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}
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if ((m_channelSampleRate != channelSampleRate) || force)
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@ -38,6 +38,7 @@ const QStringList DemodAnalyzerSettings::m_channelTypes = {
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QStringLiteral("PacketDemod"),
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QStringLiteral("PacketMod"),
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QStringLiteral("RadiosondeDemod"),
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QStringLiteral("RTTYMod"),
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QStringLiteral("SSBDemod"),
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QStringLiteral("SSBMod"),
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QStringLiteral("WFMDemod"),
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@ -60,6 +61,7 @@ const QStringList DemodAnalyzerSettings::m_channelURIs = {
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QStringLiteral("sdrangel.channel.packetdemod"),
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QStringLiteral("sdrangel.channeltx.modpacket"),
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QStringLiteral("sdrangel.channel.radiosondedemod"),
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QStringLiteral("sdrangel.channeltx.modrtty"),
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QStringLiteral("sdrangel.channel.ssbdemod"),
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QStringLiteral("sdrangel.channeltx.modssb"),
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QStringLiteral("sdrangel.channel.wfmdemod"),
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