mirror of
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117 lines
6.2 KiB
C++
117 lines
6.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2024 Jon Beniston, M7RCE <jon@beniston.com> //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QFile>
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#include <QTextStream>
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#include <QStandardPaths>
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#include <QDebug>
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#include "util/csv.h"
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#include "vlftransmitters.h"
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// https://sidstation.loudet.org/stations-list-en.xhtml
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// https://core.ac.uk/download/pdf/224769021.pdf -- Table 1
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// GQD/GQZ callsigns: https://groups.io/g/VLF/message/19212?p=%2C%2C%2C20%2C0%2C0%2C0%3A%3Arecentpostdate%2Fsticky%2C%2C19.6%2C20%2C2%2C0%2C38924431
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QList<VLFTransmitters::Transmitter> VLFTransmitters::m_transmitters = {
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{QStringLiteral("JXN"), 16400, 66.974353, 13.873617, -1}, // Novik, Norway (Only transmits 6 times a day)
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{QStringLiteral("VTX2"), 17000, 8.387015, 77.752762, -1}, // South Vijayanarayanam, India
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{QStringLiteral("RDL"), 18100, 44.773333, 39.547222, -1}, // Krasnodar, Russia (Transmits short bursts, possibly FSK)
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{QStringLiteral("GQD"), 19580, 54.911643, -3.278456, 100}, // Anthorn, UK, Often referred to as GBZ
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{QStringLiteral("NWC"), 19800, -21.816325, 114.16546, 1000}, // Exmouth, Aus
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{QStringLiteral("ICV"), 20270, 40.922946, 9.731881, 50}, // Isola di Tavolara, Italy (Can be distorted on 3D map if terrain used)
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{QStringLiteral("FTA"), 20900, 48.544632, 2.579429, 50}, // Sainte-Assise, France (Satellite imagary obfuscated)
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{QStringLiteral("NPM"), 21400, 21.420166, -158.151140, 600}, // Pearl Harbour, Lualuahei, USA (Not seen?)
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{QStringLiteral("HWU"), 21750, 46.713129, 1.245248, 200}, // Rosnay, France
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{QStringLiteral("GQZ"), 22100, 54.731799, -2.883033, 100}, // Skelton, UK (GVT in paper)
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{QStringLiteral("DHO38"), 23400, 53.078900, 7.615000, 300}, // Rhauderfehn, Germany - Off air 7-8 UTC
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{QStringLiteral("NAA"), 24000, 44.644506, -67.284565, 1000}, // Cutler, Maine, USA
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{QStringLiteral("TBB"), 26700, 37.412725, 27.323342, -1}, // Bafa, Turkey
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{QStringLiteral("TFK/NRK"), 37500, 63.850365, -22.466773, 100}, // Grindavik, Iceland
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{QStringLiteral("SRC"), 40400, 57.120328, 16.153083, -1}, // Grimeton, Sweden
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{QStringLiteral("NSY"), 45900, 37.125660, 14.436416, -1}, // Niscemi, Italy
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{QStringLiteral("SXA"), 49000, 38.145155, 24.019718, -1}, // Marathon, Greece
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{QStringLiteral("GYW1"), 51950, 57.617463, -1.887589, -1}, // Crimond, UK
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{QStringLiteral("FUE"), 65800, 48.637673, -4.350758, -1}, // Kerlouan, France
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};
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QHash<QString, const VLFTransmitters::Transmitter*> VLFTransmitters::m_callsignHash;
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VLFTransmitters::Init VLFTransmitters::m_init;
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VLFTransmitters::Init::Init()
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{
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// Get directory to store app data in
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QStringList locations = QStandardPaths::standardLocations(QStandardPaths::AppDataLocation);
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// First dir is writable
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QString dir = locations[0];
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// Try reading transmitters from .csv file
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QString filename = QString("%1/%2/%3/vlftransmitters.csv").arg(dir).arg(COMPANY).arg(APPLICATION_NAME); // Because this method is called before main(), we need to add f4exb/SDRangel
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QFile file(filename);
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if (file.open(QIODevice::ReadOnly | QIODevice::Text))
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{
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QTextStream in(&file);
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QString error;
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QHash<QString, int> colIndexes = CSV::readHeader(in, {
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QStringLiteral("Callsign"),
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QStringLiteral("Frequency"),
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QStringLiteral("Latitude"),
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QStringLiteral("Longitude"),
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QStringLiteral("Power")
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}, error);
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if (error.isEmpty())
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{
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QStringList cols;
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int callsignCol = colIndexes.value(QStringLiteral("Callsign"));
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int frequencyCol = colIndexes.value(QStringLiteral("Frequency"));
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int latitudeCol = colIndexes.value(QStringLiteral("Latitude"));
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int longitudeCol = colIndexes.value(QStringLiteral("Longitude"));
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int powerCol = colIndexes.value(QStringLiteral("Power"));
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int maxCol = std::max({callsignCol, frequencyCol, latitudeCol, longitudeCol, powerCol});
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m_transmitters.clear(); // Replace builtin list
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while(CSV::readRow(in, &cols))
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{
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if (cols.size() > maxCol)
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{
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Transmitter transmitter;
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transmitter.m_callsign = cols[callsignCol];
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transmitter.m_frequency = cols[frequencyCol].toLongLong();
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transmitter.m_latitude = cols[latitudeCol].toFloat();
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transmitter.m_longitude = cols[longitudeCol].toFloat();
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transmitter.m_power = cols[powerCol].toInt();
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m_transmitters.append(transmitter);
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}
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}
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}
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else
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{
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qWarning() << filename << "did not contain expected headers.";
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}
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}
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// Create hash table for faster searching
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for (const auto& transmitter : VLFTransmitters::m_transmitters) {
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VLFTransmitters::m_callsignHash.insert(transmitter.m_callsign, &transmitter);
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}
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}
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