73 lines
2.2 KiB
JavaScript
73 lines
2.2 KiB
JavaScript
self.importScripts("satellite.js");
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self.importScripts("moment.min.js");
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self.importScripts("https://cesiumjs.org/releases/1.53/Build/Cesium/Cesium.js")
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norad = ""
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groundStations = []
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satrec = null
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Orbits = []
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name = ""
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onmessage = function(e) {
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norad = e.data[0]
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name = e.data[1][0]
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satrec = self.satellite_js.twoline2satrec(e.data[1][1],e.data[1][2]);
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getStations()
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Orbits = getObrit()
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}
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setInterval(function(){
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getStations()
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}, 10000);
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setInterval(function(){
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getObrit()
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}, 60000*5);
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setInterval(function(){
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var gmst = self.satellite_js.gstime(new Date());
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var positionAndVelocity = self.satellite_js.propagate(satrec, new Date());
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var positionEci = positionAndVelocity.position
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var positionGd = self.satellite_js.eciToGeodetic(positionEci, gmst)
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if (groundStations[1] == undefined){
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groundStations.push([])
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}
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postMessage([norad,name,self.Cesium.Ellipsoid.WGS84.cartographicToCartesian(new self.Cesium.Cartographic(positionGd.longitude, positionGd.latitude, (positionGd.height*1000))),groundStations[0],groundStations[1],Orbits])
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}, 10000);
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function getStations(){
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var xhttp = new XMLHttpRequest();
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xhttp.onreadystatechange = function() {
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if (this.readyState == 4 && this.status == 200) {
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groundStations = JSON.parse(this.responseText);
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}
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};
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xhttp.open("GET", "/stations_from_sat/"+norad, true);
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xhttp.send();
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}
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function degress (radians) {
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return radians * 180 / Math.PI;
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};
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function getObrit(){
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satelliteOrbit = []
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for (var i = 0; i < 30; i++){
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time = moment().subtract(10,"m").add(i*1,"m")
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var gmst = self.satellite_js.gstime(new Date(time.valueOf()));
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var positionAndVelocity = self.satellite_js.propagate(satrec, new Date(time.valueOf()));
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var positionEci = positionAndVelocity.position
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var positionGd = self.satellite_js.eciToGeodetic(positionEci, gmst)
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satelliteOrbit = satelliteOrbit.concat(self.Cesium.Ellipsoid.WGS84.cartographicToCartesian(new self.Cesium.Cartographic(positionGd.longitude, positionGd.latitude, positionGd.height*1000)));
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}
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return satelliteOrbit
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} |