adam/LoraSA
1
0
Fork 0
mirror of https://github.com/Genaker/LoraSA.git synced 2026-06-29 22:41:55 +02:00
Code Issues Packages Projects Releases Wiki Activity

Simulate directional antenna

Browse Source
This commit is contained in:
Sassa NF
2025-04-18 09:50:00 +01:00
parent c06146c44d
commit e2086207d6
1 changed files with 23 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
web_app/compass/index.html
+23 -13
View File
@@ -176,7 +176,7 @@
dataPoints.forEach(({ angle, rssi }) => {
const rad = (angle * Math.PI) / 180;
//const length = (120 + rssi) / (radius / 2) * radius;
const length = ((120 - 90) + (rssi + 90)) * lineCoef; // Scale RSSI to fit within radar
var length = ((120 - 90) + (rssi + 90)) * lineCoef; // Scale RSSI to fit within radar
if (length > radius) {
length = radius;
}
@@ -327,6 +327,14 @@
document.body.appendChild(promptDiv);
}
function simulateRssi(fox) {
if (fox > 35) {
return -90;
}
return -Math.sin((Math.PI / 2) * fox / 35) * 80 - Math.random() * 3 - 10;
}
// Parse Bluetooth data
function parseBTData(data) {
// Match the data format and extract the heading and RSSI values
@@ -360,7 +368,7 @@
const heading = ((headingMax + headingMin + 720 + (headingMax - headingMin > 180 ? 360 : 0)) / 2) % 360;
const rssi = spectrum[0]["R"];
dataPoints[heading] = { angle: heading, rssi: rssi };
dataPoints[Math.trunc(heading)] = { angle: heading, rssi: rssi };
currentPoint = { angle: heading, rssi: rssi };
//if (dataPoints.length > 50) dataPoints.shift(); // Keep only the last 50 points
headingDisplay.textContent = `${heading.toFixed(1)}°`;
@@ -409,18 +417,20 @@
isSimulating = true;
simulateBtn.textContent = "Stop Simulation";
(function simulate() {
dataPoints = [];
for (i = 0; i < 360; i++) {
dataPoints[i] = { angle: i, rssi: -120 };
}
(function simulate(fox, prevAngle, prevRssi) {
if (!isSimulating) return;
const angle = Math.random() * 360;
const rssi = -70 + Math.random() * 30;
dataPoints.push({ angle, rssi });
currentPoint = { angle, rssi };
if (dataPoints.length > 360 * 5) dataPoints.shift();
headingDisplay.textContent = `${angle.toFixed(1)}°`;
rssiDisplay.textContent = `${rssi.toFixed(1)} dBm`;
drawRadar();
setTimeout(simulate, 100);
})();
const angle = (prevAngle - 12 + Math.random() * 30) % 360; // bias slightly to scan on
const rssi = simulateRssi(Math.abs(angle - fox));
const data = "RSSI_HEADING: '{H:" + angle + ",RSSI:" + rssi + "}'"
parseBTData(data); // test actual BT data processing
setTimeout(simulate, 100, fox, angle, rssi);
})(Math.random() * 360, Math.random() * 360, -70 + Math.random() * 30);
}
});