kuba/fm-dx-webserver
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some changes

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KubaPro010
2026-02-24 12:20:09 +01:00
parent 1f70b58295
commit 1d04719580
18 changed files with 160 additions and 259 deletions
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39
server/tx_search.js
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@@ -96,9 +96,7 @@ async function buildTxDatabase() {
consoleCmd.logInfo('Retrying transmitter database download...');
}
}
} else {
consoleCmd.logInfo('Server latitude and longitude must be set before transmitter database can be built');
}
} else consoleCmd.logInfo('Server latitude and longitude must be set before transmitter database can be built');
}
// Function to build index map of PI+Freq combinations
@@ -162,8 +160,7 @@ function getStateBoundingBox(coordinates) {
// Function to check if a city (lat, lon) falls within the bounding box of a state
function isCityInState(lat, lon, boundingBox) {
return lat >= boundingBox.minLat && lat <= boundingBox.maxLat &&
lon >= boundingBox.minLon && lon <= boundingBox.maxLon;
return lat >= boundingBox.minLat && lat <= boundingBox.maxLat && lon >= boundingBox.minLon && lon <= boundingBox.maxLon;
}
// Function to check if a city (lat, lon) is inside any US state and return the state name
@@ -231,11 +228,8 @@ function evaluateStation(station, esMode) {
let extraWeight = erp > weightedErp && station.distanceKm <= weightDistance ? 0.3 : 0;
let score = 0;
// If ERP is 1W, use a simpler formula to avoid zero-scoring.
if (erp === 0.001) {
score = erp / station.distanceKm;
} else {
score = ((10 * (Math.log10(erp * 1000))) / weightDistance) + extraWeight;
}
if (erp === 0.001) score = erp / station.distanceKm;
else score = ((10 * (Math.log10(erp * 1000))) / weightDistance) + extraWeight;
return score;
}
@@ -304,12 +298,8 @@ async function fetchTx(freq, piCode, rdsPs) {
loc => loc.distanceKm < 700 && loc.erp >= 10
);
let esMode = false;
if (!tropoPriority) {
esMode = checkEs();
}
for (let loc of filteredLocations) {
loc.score = evaluateStation(loc, esMode);
}
if (!tropoPriority) esMode = checkEs();
for (let loc of filteredLocations) loc.score = evaluateStation(loc, esMode);
// Sort by score in descending order
filteredLocations.sort((a, b) => b.score - a.score);
match = filteredLocations[0];
@@ -323,11 +313,9 @@ async function fetchTx(freq, piCode, rdsPs) {
}
if (match) {
if (match.itu === 'USA') {
if (match.itu == 'USA') { // Also known as Dumbfuckinstan. they should not go to hell, but hell+ (it is NOT better)
const state = getStateForCoordinates(match.lat, match.lon);
if (state) {
match.state = state; // Add state to matchingCity
}
if (state) match.state = state; // Add state to matchingCity
}
const result = {
station: match.detectedByPireg
@@ -360,9 +348,7 @@ function checkEs() {
const now = Date.now();
const url = "https://fmdx.org/includes/tools/get_muf.php";
if (esSwitchCache.lastCheck && now - esSwitchCache.lastCheck < esFetchInterval) {
return esSwitchCache.esSwitch;
}
if (esSwitchCache.lastCheck && now - esSwitchCache.lastCheck < esFetchInterval) return esSwitchCache.esSwitch;
if (Latitude > 20) {
esSwitchCache.lastCheck = now;
@@ -389,15 +375,12 @@ function haversine(lat1, lon1, lat2, lon2) {
const R = 6371;
const dLat = deg2rad(lat2 - lat1);
const dLon = deg2rad(lon2 - lon1);
const a =
Math.sin(dLat / 2) * Math.sin(dLat / 2) +
Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.sin(dLon / 2) * Math.sin(dLon / 2);
const a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.sin(dLon / 2) * Math.sin(dLon / 2);
const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
const distance = R * c;
const y = Math.sin(dLon) * Math.cos(deg2rad(lat2));
const x = Math.cos(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) -
Math.sin(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(dLon);
const x = Math.cos(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) - Math.sin(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(dLon);
const azimuth = Math.atan2(y, x);
const azimuthDegrees = (azimuth * 180 / Math.PI + 360) % 360;