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GNSS-Radar.html
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GNSS-Radar.html
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<!------------------------------------------------------------------------------
* Copyright (C) 2014 Taro Suzuki <[email protected]>
* This script uses the following libraries :
* satellite.js :https://github.com/shashwatak/satellite-js
* highcharts.js: http://www.highcharts.com/
* Sylvester.js: http://sylvester.jcoglan.com/
* TLE is downloaded from http://www.celestrak.com/
*------------------------------------------------------------------------------>
<!DOCTYPE html>
<html>
<head>
<title>GNSS Radar</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<meta charset="UTF-8">
<meta name="twitter:card" content="photo" />
<meta name="twitter:site" content="@Taro_Suzuki" />
<meta name="twitter:domain" content="www.taroz.net/GNSS-Radar.html" />
<meta name="twitter:creator" content="@Taro_Suzuki" />
<meta name="twitter:title" content="GNSS-Radar" />
<meta name="twitter:image:src" content="http://www.taroz.net/img/diary/gnssradar.jpg" />
<style type="text/css">
html, body,
#box1{
margin: 0;
width: 100%;
height: 100%;
}
#map {
float: left;
margin: 0;
width: 55%;
height: 100%;
}
#box2{
float: left;
margin: 0;
width: 45%;
height: 100%;
}
#nsatchart {
margin: 0;
width: 98%;
height: 40%;
}
#skychart {
float: right;
margin: 0;
width: 100%;
height: 60%;
}
</style>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script type="text/javascript" src='http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js'></script>
<script type="text/javascript" src="gnssradar/lib/highchartsv4/highcharts.js"></script>
<script type="text/javascript" src="gnssradar/lib/highchartsv4/modules/exporting.js"></script>
<script type="text/javascript" src="gnssradar/lib/highchartsv4/highcharts-more.js"></script>
<script type="text/javascript" src="gnssradar/lib/satellite/satellite.js"></script>
<script type="text/javascript" src="gnssradar/lib/sylvester/sylvester.js"></script>
</head>
<body>
<div id="box1">
<div id="map"></div>
<div id="box2">
<div id="nsatchart"></div>
<div id="skychart"></div>
</div>
</div>
<script type="text/javascript">
var map;
var orglat, orglon, orgllh;
var orgmarker;
var elemask, offhr, dop;
var tint;
var maxntimes = 200;
var ntimes;
var tind = 0;
var time, times = new Array(maxntimes);
var utcoffset; // min.
var gpsazels = new Array(maxntimes);
var gloazels = new Array(maxntimes);
var galazels = new Array(maxntimes);
var bdsazels = new Array(maxntimes);
var qzsazels = new Array(maxntimes);
var sbsazels = new Array(maxntimes);
var gpsllhs = new Array(maxntimes);
var glollhs = new Array(maxntimes);
var galllhs = new Array(maxntimes);
var bdsllhs = new Array(maxntimes);
var qzsllhs = new Array(maxntimes);
var sbsllhs = new Array(maxntimes);
var qzsmarkers = new Array(7);
var gpsmarkers = new Array(32);
var glomarkers = new Array(24);
var galmarkers = new Array(27);
var bdsmarkers = new Array(35);
var sbsmarkers = new Array(23);
var qzstles = new Array(7);
var gpstles = new Array(32);
var glotles = new Array(24);
var galtles = new Array(27);
var bdstles = new Array(35);
var sbstles = new Array(23);
var iconqz, icongps, icongal, iconglo, iconbds, iconsbs, icon;
var visstate = { "GPS": true, "GLONASS": true, "Galileo": true, "BeiDou": true, "QZSS": true, "SBAS": true };
var skyplts = {};
var nsatplts = {};
var skychart,nsatchart;
var D2R = Math.PI / 180;
var R2D = 180 / Math.PI;
// get TLE from celestrak.com
var xmlHttp = new XMLHttpRequest();
xmlHttp.open("GET", "gnssradar/celestrak.txt", false);
xmlHttp.send(null);
var tledl = xmlHttp.responseText;
// get satellite list from taroz.net
var xmlHttp = new XMLHttpRequest();
xmlHttp.open("GET", "gnssradar/satlist.txt", false);
xmlHttp.send(null);
var satlistdl = xmlHttp.responseText;
var sats = satlistdl.split("\n");
var nsats = sats.length;
// parse TLE
var tles = parse_tle(tledl);
// sort TLE
for (var i = 0; i < nsats; i++) {
var fields = sats[i].split(",");
if (fields[2] in tles) {
var sptle = tles[fields[2]].split(",");
// switch satellite type in satlist
switch (fields[0]) {
case "1": // GPS
gpstles[Number(fields[1]) - 1] = { "name": sptle[0], "line1": sptle[1], "line2": sptle[2] };
break;
case "2": // SBAS
sbstles[Number(fields[1]) - 120] = { "name": sptle[0], "line1": sptle[1], "line2": sptle[2] };
break;
case "3": // GLONASS
glotles[Number(fields[1]) - 1] = { "name": sptle[0], "line1": sptle[1], "line2": sptle[2] };
break;
case "4": // Galileo
galtles[Number(fields[1]) - 1] = { "name": sptle[0], "line1": sptle[1], "line2": sptle[2] };
break;
case "5": // QZSS
qzstles[Number(fields[1]) - 193] = { "name": sptle[0], "line1": sptle[1], "line2": sptle[2] };
break;
case "6": // BeiDou
bdstles[Number(fields[1]) - 1] = { "name": sptle[0], "line1": sptle[1], "line2": sptle[2] };
break;
}
}
}
// add initialize event
google.maps.event.addDomListener(window, 'load', initialize);
// initialization function
function initialize() {
// get number of time intervals to display
ntimes = getKey("ntimes", 24);
if (ntimes>maxntimes) ntimes = maxntimes;
// get number of time intervals to display
tint = getKey("tint", 30);
tint = tint*60*1000; // ms
// get elevation mask (default: 10 degree)
elemask = getKey("elemask", 10);
// get location (default: Tokyo)
orglat = getKey("lat", 35.7);
orglon = getKey("lon", 139.8);
orgllh = {
"latitude": orglat/180*Math.PI,
"longitude": orglon/180*Math.PI,
"height": 0
}
// offset hour
offhr = getKey("offhr", 0);
// Google Earth options
var myOptions = {
zoom: 3,
center: new google.maps.LatLng(orglat, orglon),
navigationControl: false,
mapTypeControl: false,
streetViewControl: false,
mapTypeId: google.maps.MapTypeId.SATELLITE
};
map = new google.maps.Map(document.getElementById('map'), myOptions);
// Load satellite icons
iconqzs = new google.maps.MarkerImage('./gnssradar/icon/QZSS.png',
new google.maps.Size(100, 68),
new google.maps.Point(0,0),
new google.maps.Point(40, 25));
icongps = new google.maps.MarkerImage('./gnssradar/icon/GPS.png',
new google.maps.Size(100, 73),
new google.maps.Point(0,0),
new google.maps.Point(50, 41));
iconglo = new google.maps.MarkerImage('./gnssradar/icon/GLONASS.png',
new google.maps.Size(90, 49),
new google.maps.Point(0, 0),
new google.maps.Point(39, 26));
icongal = new google.maps.MarkerImage('./gnssradar/icon/GALILEO.png',
new google.maps.Size(110, 55),
new google.maps.Point(0, 0),
new google.maps.Point(71, 34));
iconbds = new google.maps.MarkerImage('./gnssradar/icon/BeiDou.png',
new google.maps.Size(100, 85),
new google.maps.Point(0, 0),
new google.maps.Point(45, 48));
iconsbs = new google.maps.MarkerImage('./gnssradar/icon/SBAS.png',
new google.maps.Size(100, 70),
new google.maps.Point(0, 0),
new google.maps.Point(47, 37));
icon = new google.maps.MarkerImage('./gnssradar/icon/transparence.png',
new google.maps.Size(3, 3),
new google.maps.Point(0, 0),
new google.maps.Point(1, 1));
// Display satellite icons at default position
var latlon = new google.maps.LatLng(0.0,0.0);
for (var i = 0; i < 32; i++) {
gpsmarkers[i] = new google.maps.Marker({ position: latlon, map: map, icon: icon });
gpsmarkers[i].setMap(map);
}
for (var i = 0; i < 7; i++) {
qzsmarkers[i] = new google.maps.Marker({ position: latlon, map: map, icon: icon });
qzsmarkers[i].setMap(map);
}
for (var i = 0; i < 24; i++) {
glomarkers[i] = new google.maps.Marker({ position: latlon, map: map, icon: icon });
glomarkers[i].setMap(map);
}
for (var i = 0; i < 27; i++) {
galmarkers[i] = new google.maps.Marker({ position: latlon, map: map, icon: icon });
galmarkers[i].setMap(map);
}
for (var i = 0; i < 35; i++) {
bdsmarkers[i] = new google.maps.Marker({ position: latlon, map: map, icon: icon });
bdsmarkers[i].setMap(map);
}
for (var i = 0; i < 23; i++) {
sbsmarkers[i] = new google.maps.Marker({ position: latlon, map: map, icon: icon });
sbsmarkers[i].setMap(map);
}
// original position
var latlon = new google.maps.LatLng(orglat, orglon);
orgmarker = new google.maps.Marker({
position: latlon, map: map,
icon: "./gnssradar/icon/rangerstation.png",
shadow: "./gnssradar/icon/rangerstation.shadow.png",
draggable: true
});
var title = "Observer (Drag and drop me!)\nLat:" + orglat + "\nLon:" + orglon;
orgmarker.setTitle(title);
// get current time
var time = new Date();
utcoffset = time.getTimezoneOffset();
time.setHours(time.getHours() + offhr); // add offset hour
// generate time
for (var i = 0; i < ntimes; i++) {
times[i] = new Date(time.getTime());
time.setMinutes(time.getMinutes() + tint / 1000 / 60);
}
for (var i = 0; i < ntimes; i++) {
run_compute_satllh(i); // compute satellites locations
run_compute_satazel(i); // compute satellites azels
}
run_set_sat_gmap(tind); // set satellites on gmap
run_visible_sat_gmap(); // visible satellites on gmap
run_gen_skyplotdata(tind); // generate plot data
run_gen_nsatplotdata();
dop = compute_dop(tind); // compute dop
// draw chart
skychartdraw(skyplts);
nsatchartdraw(nsatplts, times, orgllh, elemask);
// add marker drag and drop event
google.maps.event.addListener(orgmarker, 'dragend', function (ev) {
// get new location
orglat = ev.latLng.lat();
orglon = ev.latLng.lng();
orgllh = {
"latitude": orglat * D2R,
"longitude": orglon * D2R,
"height": 0
}
var title = "Observer (Drag and drop me!)\nLat:" + orglat + "\nLon:" + orglon;
orgmarker.setTitle(title);
map.panTo(ev.latLng); // pan to new location
for (var i = 0; i < ntimes; i++) {
run_compute_satazel(i); // re-compute azels
}
run_gen_skyplotdata(tind); // re-generate plot data
run_gen_nsatplotdata();
dop = compute_dop(tind); // re-compute dop
// draw chart
skychartdraw(skyplts);
nsatchartdraw(nsatplts, times, orgllh, elemask);
});
}
// run compute_satllh(ind)
function run_compute_satllh(ind) {
gpsllhs[ind] = compute_satllh(gpstles, times[ind]);
glollhs[ind] = compute_satllh(glotles, times[ind]);
galllhs[ind] = compute_satllh(galtles, times[ind]);
bdsllhs[ind] = compute_satllh(bdstles, times[ind]);
qzsllhs[ind] = compute_satllh(qzstles, times[ind]);
sbsllhs[ind] = compute_satllh(sbstles, times[ind]);
}
// run set_sat_gmap()
function run_set_sat_gmap(ind) {
gpsmarkers = set_sat_gmap(gpsllhs[ind], gpstles, gpsmarkers, 1);
glomarkers = set_sat_gmap(glollhs[ind], glotles, glomarkers, 1);
galmarkers = set_sat_gmap(galllhs[ind], galtles, galmarkers, 1);
bdsmarkers = set_sat_gmap(bdsllhs[ind], bdstles, bdsmarkers, 1);
qzsmarkers = set_sat_gmap(qzsllhs[ind], qzstles, qzsmarkers, 193);
sbsmarkers = set_sat_gmap(sbsllhs[ind], sbstles, sbsmarkers, 120);
}
// run visible_sat_gmap()
function run_visible_sat_gmap() {
visible_sat_gmap(1, "gps");
visible_sat_gmap(1, "glo");
visible_sat_gmap(1, "gal");
visible_sat_gmap(1, "bds");
visible_sat_gmap(1, "qzs");
visible_sat_gmap(1, "sbs");
}
// run compute_satazel()
function run_compute_satazel(ind) {
gpsazels[ind] = compute_satazel(orgllh, gpsllhs[ind]);
gloazels[ind] = compute_satazel(orgllh, glollhs[ind]);
galazels[ind] = compute_satazel(orgllh, galllhs[ind]);
bdsazels[ind] = compute_satazel(orgllh, bdsllhs[ind]);
qzsazels[ind] = compute_satazel(orgllh, qzsllhs[ind]);
sbsazels[ind] = compute_satazel(orgllh, sbsllhs[ind]);
}
// run gen_skyplotdata()
function run_gen_skyplotdata(ind) {
var gpsplt = gen_skyplotdata(gpsazels[ind], 1);
var gloplt = gen_skyplotdata(gloazels[ind], 1);
var galplt = gen_skyplotdata(galazels[ind], 1);
var bdsplt = gen_skyplotdata(bdsazels[ind], 1);
var qzsplt = gen_skyplotdata(qzsazels[ind], 193);
var sbsplt = gen_skyplotdata(sbsazels[ind], 120);
skyplts = { gps: gpsplt, glo: gloplt, gal: galplt, bds: bdsplt, qzs: qzsplt, sbs: sbsplt };
}
// run gen_nsatplotdata()
function run_gen_nsatplotdata() {
var gpsplt = gen_nsatplotdata(gpsazels);
var gloplt = gen_nsatplotdata(gloazels);
var galplt = gen_nsatplotdata(galazels);
var bdsplt = gen_nsatplotdata(bdsazels);
var qzsplt = gen_nsatplotdata(qzsazels);
var sbsplt = gen_nsatplotdata(sbsazels);
nsatplts = { gps: gpsplt, glo: gloplt, gal: galplt, bds: bdsplt, qzs: qzsplt, sbs: sbsplt };
}
// get additonal inputs
function getKey(key, def) {
var str = location.search.substring(1);
if (str) {
var x = str.split("&");
for (var i = 0; i < x.length; i++) {
var y = x[i].split("=");
if (y[0] == key) return Number(y[1]);
}
return def;
} else {
return def;
}
}
// parse TLE data
function parse_tle(tleall) {
var tles = {};
var tlesplit = tleall.split("\n");
var ntle = Math.floor(tlesplit.length / 3);
for (var i = 0; i < ntle; i++) {
var satnames = tlesplit[3 * i + 1].split(" ");
tles[satnames[1]] = tlesplit[3 * i] + "," + tlesplit[3 * i + 1] + "," + tlesplit[3 * i + 2];
}
return tles;
}
// compute gmst
function date2gmst(date) {
var y = date.getUTCFullYear();
var m = date.getUTCMonth() + 1;
var d = date.getUTCDate();
var w = date.getUTCDay();
var hr = date.getUTCHours();
var min = date.getUTCMinutes();
var sec = date.getUTCSeconds();
return satellite.gstime_from_date(y, m, d, hr, min, sec);
}
// compute gmst
function date2utc(date) {
var y = date.getUTCFullYear();
var m = date.getUTCMonth() + 1;
var d = date.getUTCDate();
var w = date.getUTCDay();
var hr = date.getUTCHours();
var min = date.getUTCMinutes();
var sec = date.getUTCSeconds();
return Date.UTC(y, m, d, hr, min, sec);
}
// compute satellite geodetic location
function compute_satllh(tles, time) {
var llhs = new Array(tles.length);
for (var i = 0; i < tles.length; i++) {
if (tles[i]) {
// compute satellite position from TLE
llhs[i] = _compute_satllh(tles[i]["line1"], tles[i]["line2"], time);
}
}
return llhs;
}
function _compute_satllh(tle1, tle2, date) {
var satrec = satellite.twoline2satrec(tle1, tle2);
var y = date.getUTCFullYear();
var m = date.getUTCMonth() + 1;
var d = date.getUTCDate();
var w = date.getUTCDay();
var hr = date.getUTCHours();
var min = date.getUTCMinutes();
var sec = date.getUTCSeconds();
var gmst = satellite.gstime_from_date(y, m, d, hr, min, sec);
var sateci = satellite.propagate(satrec, y, m, d, hr, min, sec);
return satellite.eci_to_geodetic(sateci["position"], gmst);
}
// compute satellite azimuth and elevation
function compute_satazel(orgllh, llhs) {
var azels = new Array(llhs.length);
for (var i = 0; i < llhs.length; i++) {
if (llhs[i]) {
// azimuth and elevation angle
azels[i] = _compute_satazel(orgllh, llhs[i]);
}
}
return azels;
}
function _compute_satazel(orgllh, satllh) {
var satecf = satellite.geodetic_to_ecf(satllh);
var azel = satellite.ecf_to_look_angles(orgllh, satecf);
azel["azimuth"] = azel["azimuth"] / Math.PI * 180; // degree
azel["elevation"] = azel["elevation"] / Math.PI * 180; // degree
return azel;
}
// set satellite marker on gmap
function set_sat_gmap(llhs, tles, markers, prnoffset) {
for (var i = 0; i < tles.length; i++) {
markers[i].exist = false;
if (tles[i]) {
_set_sat_gmap(llhs[i]["latitude"] * R2D, llhs[i]["longitude"] * R2D, tles[i]["name"], i + prnoffset, markers[i]);
markers[i].exist = true;
}
}
return markers;
}
function _set_sat_gmap(lat, lon, svname, prn, marker) {
var latlon = new google.maps.LatLng(lat, lon);
marker.setPosition(latlon);
// tooltip
var title = svname + "\nPRN:" + prn + "\nLat:" + lat + "\nLon:" + lon;
marker.setTitle(title);
}
// generate skychart plot data
function gen_skyplotdata(azels,offi) {
var plt = [];
for (var i = 0; i < azels.length; i++) {
if (azels[i]) {
if (azels[i]["elevation"] > elemask) {
var az = Math.round(azels[i]["azimuth"] * 10) / 10;
var el = Math.round(azels[i]["elevation"] * 10) / 10;
plt[plt.length] = { name: (i + offi).toString(), x: az, y: el };
}
}
}
return plt;
}
// generate nsatchart plot data
function gen_nsatplotdata(azels) {
var plt = [];
for (var j = 0; j < ntimes; j++) {
var nsat = 0;
for (var i = 0; i < azels[j].length; i++) {
if (azels[j][i]) {
if (azels[j][i]["elevation"] > elemask) {
nsat++;
}
}
}
plt[plt.length] = { x: j, y: nsat };
}
return plt;
}
function check_azel(azels, azs, els) {
for (var i = 0; i < azels.length; i++) {
if (azels[i]) {
if (azels[i]["elevation"] > elemask) {
azs[azs.length] = azels[i]["azimuth"] * D2R;
els[els.length] = azels[i]["elevation"] * D2R;
}
}
}
return [azs, els];
}
// compute DOP
function compute_dop(ind) {
var azs = [];
var els = [];
var tmp;
// check number of available satellites
if (visstate["GPS"]) {
tmp = check_azel(gpsazels[ind], azs, els); azs = tmp[0]; els = tmp[1];
}
if (visstate["GLONASS"]) {
tmp = check_azel(gloazels[ind], azs, els); azs = tmp[0]; els = tmp[1];
}
if (visstate["Galileo"]) {
tmp = check_azel(galazels[ind], azs, els); azs = tmp[0]; els = tmp[1];
}
if (visstate["BeiDou"]) {
tmp = check_azel(bdsazels[ind], azs, els); azs = tmp[0]; els = tmp[1];
}
if (visstate["QZSS"]) {
tmp = check_azel(qzsazels[ind], azs, els); azs = tmp[0]; els = tmp[1];
}
if (visstate["SBAS"]) {
tmp = check_azel(sbsazels[ind], azs, els); azs = tmp[0]; els = tmp[1];
}
var nsat = azs.length;
if (nsat < 4) return { "hdop": 999, "vdop": 999, "pdop": 999 };
var G = Matrix.Zero(nsat, 4);
for (var i = 0; i < nsat; i++)
{
G.elements[i][0] = Math.cos(els[i]) * Math.sin(azs[i]); // East
G.elements[i][1] = Math.cos(els[i]) * Math.cos(azs[i]); // North
G.elements[i][2] = Math.sin(els[i]); // Up
G.elements[i][3] = 1;
}
var D = (G.transpose().multiply(G)).inverse();
var out = {};
out["hdop"] = Math.sqrt(D.elements[0][0] + D.elements[1][1]);
out["vdop"] = Math.sqrt(D.elements[2][2]);
out["pdop"] = Math.sqrt(D.elements[0][0] + D.elements[1][1] + D.elements[2][2]);
return out;
}
// display or non-display satellite icons on gmap
function visible_sat_gmap(view, sysstr) {
var markers;
var iconsat;
switch (sysstr) {
case "GPS":
case "gps":
markers = gpsmarkers;
iconsat = icongps;
break;
case "GLONASS":
case "glo":
markers = glomarkers;
iconsat = iconglo;
break;
case "Galileo":
case "gal":
markers = galmarkers;
iconsat = icongal;
break;
case "BeiDou":
case "bds":
markers = bdsmarkers;
iconsat = iconbds;
break;
case "QZSS":
case "qzs":
markers = qzsmarkers;
iconsat = iconqzs;
break;
case "SBAS":
case "sbs":
markers = sbsmarkers;
iconsat = iconsbs;
break;
}
for (var i = 0; i < markers.length; i++) {
if (markers[i].exist) {
if (view)
markers[i].setIcon(iconsat);
else
markers[i].setIcon(icon); // transparence
}
}
}
// nsat chart setting
function nsatchartdraw(nsatplts, times, llh, elemask) {
var col = ['rgba(0,128,0,0.5)', 'rgba(255,170,0,0.5)', 'rgba(255,0,255,0.5)', 'rgba(255,0,0,0.5)', 'rgba(0,0,255,0.5)', 'rgba(0,128,128,0.5)'];
var coldark = ['rgba(0,78,0,0.8)', 'rgba(225,140,0,0.8)', 'rgba(205,0,205,0.8)', 'rgba(205,0,0,0.8)', 'rgba(0,0,205,0.8)', 'rgba(0,100,100,0.8)'];
var cat = [];
for (var i = 0; i < ntimes; i++)
cat[i] = Highcharts.dateFormat('%H:%M', times[i] - utcoffset * 60 * 1000);
var plotdata = {
chart: {
type: 'column',
renderTo: 'nsatchart'
},
credits: {
enabled: false
},
title: {
text: 'GNSS Radar <a href="gnssradar_e.html" target="_blank"><span style="font-size: large">help</span></a>',
style: {
fontSize: 'xx-large'
},
useHTML: true
},
subtitle: {
style: {
fontSize: 'medium'
}
},
xAxis: {
type: 'datetime',
gridLineWidth: 0,
tickmarkPlacement: 'on',
categories: cat
},
yAxis: {
gridLineWidth: 0,
min: 0,
title: {
text: 'Number of satellite'
},
stackLabels: {
enabled: true,
style: {
fontWeight: 'bold',
color: 'gray'
}
}
},
legend: {
enabled: false
},
tooltip: {
formatter: function () {
return this.x + '<br/>' +
'<b>' + this.series.name + ': ' + this.y + '</b>';
},
positioner: function () {
return { x: 50, y: 50 };
}
},
exporting: {
scale: 1,
sourceHeight: 400,
sourceWidth: 800,
filename: 'nsat'
},
plotOptions: {
column: {
stacking: 'normal',
pointPadding: 0,
groupPadding: 0,
borderWidth: 0,
point: {
events: {
click: function () {
for (var i = 0; i < 6; i++) {
nsatchart.series[i].data[tind].update({ color: col[i] }, true, false);
nsatchart.series[i].data[this.x].update({ color: coldark[i] }, true, false);
}
tind = this.x;
run_set_sat_gmap(tind); // set satellites on gmap
run_gen_skyplotdata(tind); // generate plot data
dop = compute_dop(tind); // compute dop
skychartdraw(skyplts);
}
}
}
}
},
series: [{
name: 'GPS',
color: col[0]
}, {
name: 'GLONASS',
color: col[1]
}, {
name: 'Galileo',
color: col[2]
}, {
name: 'BeiDou',
color: col[3]
}, {
name: 'QZSS',
color: col[4]
}, {
name: 'SBAS',
color: col[5]
}]
} // plotdata
// set subtitle
var time = new Date();
var y = time.getFullYear();
var m = time.getMonth() + 1;
var d = time.getDate();
var H = time.getHours();
var M = time.getMinutes();
var lt = "Time: " + y + "/" + m + "/" + d + " " + H + ":" + M;
var ele = "Mask:" + elemask.toString() + " deg";
var dopstr = "HDOP:" + dop["hdop"].toFixed(1) + ", PDOP:" + dop["pdop"].toFixed(1);
plotdata["subtitle"]["text"] = lt + "<br> " + ele + ", " + dopstr;
// set plot data
plotdata["series"][0]["data"] = nsatplts["gps"];
plotdata["series"][1]["data"] = nsatplts["glo"];
plotdata["series"][2]["data"] = nsatplts["gal"];
plotdata["series"][3]["data"] = nsatplts["bds"];
plotdata["series"][4]["data"] = nsatplts["qzs"];
plotdata["series"][5]["data"] = nsatplts["sbs"];
// chart generation
nsatchart = new Highcharts.Chart(plotdata);
for (var i = 0; i < 6; i++)
nsatchart.series[i].data[tind].update({ color: coldark[i] }, true, false);
}
// sky chart setting
function skychartdraw(skyplts) {
var labels = {
"0": "N", "45": "NE", "90": "E", "135": "SE",
"180": "S", "225": "SW", "270": "W", "315": "NW"
}
var plotdata = {
chart: {
renderTo: "skychart",
polar: true
},
credits: {
enabled: false
},
legend: {
title: {
style: {
fontSize: '14px'
}
},
itemStyle: {
fontSize: '12px'
}
},
title: {
text: ''
},
subtitle: {
text: ''
},
tooltip: {
pointFormat: 'PRN: <b>{point.name}</b><br>EL: <b>{point.y}</b>deg<br>AZ: <b>{point.x}</b>deg',
hideDelay: 0
},
pane: {
startAngle: 0,
endAngle: 360
},
xAxis: {
tickInterval: 45,
min: 0,
max: 360,
labels: {
formatter: function () { return labels[this.value] },
style: {
fontSize: 'medium'
}
}
},
yAxis: {
min: 0,
max: 90,
minorTickInterval: 10,
tickInterval: 30,
reversed: true,
labels: { enabled: false }
},
exporting: {
scale: 1,
sourceHeight: 800,
sourceWidth: 600,
filename: 'skyplot'
},
plotOptions: {
bubble: {
minSize: 30,
maxSize: 30,
dataLabels: {
enabled: true,
formatter: function () { return this.point.name },
y: 4,
style: {
fontWeight: 'bold',
fontSize: 'medium'
}
},
tooltip: {
followPointer: false,
followTouchMove: false,
hideDelay: 0
},
events: {
show: function () {
var name = this.name.split("(");
visible_sat_gmap(1, name[0]);
visstate[name[0]] = true;
dop = compute_dop(tind); // re-compute dop
var sp = nsatchart.options.subtitle["text"].split("<br>");
var newtext = sp[0] + "<br>" + "Mask:" + elemask.toString() + " deg" +
", HDOP:" + dop["hdop"].toFixed(1) + ", PDOP:" + dop["pdop"].toFixed(1);
nsatchart.setTitle(this.title, { text: newtext });
nsatchart.series[this.index].show();
},
hide: function () {
var name = this.name.split("(");
visible_sat_gmap(0, name[0]);
visstate[name[0]] = false;
dop = compute_dop(tind); // re-compute dop
var sp = nsatchart.options.subtitle["text"].split("<br>");
var newtext = sp[0] + "<br>" + "Mask:" + elemask.toString() + " deg" +
", HDOP:" + dop["hdop"].toFixed(1) + ", PDOP:" + dop["pdop"].toFixed(1);
nsatchart.setTitle(this.title, { text: newtext });
nsatchart.series[this.index].hide();
}
}
}
},
series: [
{
type: 'bubble',
color: '#008000',
pointPlacement: 'between'
},
{
type: 'bubble',
color: '#FFAA00',
pointPlacement: 'between'
},
{
type: 'bubble',
color: '#FF00FF',
pointPlacement: 'between'
},
{
type: 'bubble',
color: '#FF0000',
pointPlacement: 'between'
},
{
type: 'bubble',
color: '#0000FF',
pointPlacement: 'between'
},
{
type: 'bubble',
color: '#008080',
pointPlacement: 'between'
}
]
} // plotdata
var gps = skyplts["gps"];
var glo = skyplts["glo"];
var gal = skyplts["gal"];
var bds = skyplts["bds"];
var qzs = skyplts["qzs"];
var sbs = skyplts["sbs"];
// set plot data
plotdata["series"][0]["data"] = gps;
plotdata["series"][1]["data"] = glo;
plotdata["series"][2]["data"] = gal;
plotdata["series"][3]["data"] = bds;
plotdata["series"][4]["data"] = qzs;
plotdata["series"][5]["data"] = sbs;
// set legend name
plotdata["series"][0]["name"] = "GPS(" + gps.length.toString() + ")";
plotdata["series"][1]["name"] = "GLONASS(" + glo.length.toString() + ")";
plotdata["series"][2]["name"] = "Galileo(" + gal.length.toString() + ")";
plotdata["series"][3]["name"] = "BeiDou(" + bds.length.toString() + ")";
plotdata["series"][4]["name"] = "QZSS(" + qzs.length.toString() + ")";
plotdata["series"][5]["name"] = "SBAS(" + sbs.length.toString() + ")";
// set initial visible state
plotdata["series"][0]["visible"] = visstate["GPS"];
plotdata["series"][1]["visible"] = visstate["GLONASS"];
plotdata["series"][2]["visible"] = visstate["Galileo"];
plotdata["series"][3]["visible"] = visstate["BeiDou"];
plotdata["series"][4]["visible"] = visstate["QZSS"];
plotdata["series"][5]["visible"] = visstate["SBAS"];
// set legend title
var nsat = gps.length+glo.length+gal.length+bds.length+qzs.length+sbs.length;
plotdata["legend"]["title"]["text"] =
'GNSS (' + nsat.toString() + ') ' +
'<span style="color: #666; font-weight: normal; font-size: 14px">click to hide</span>';
// chart generation
skychart = new Highcharts.Chart(plotdata);
}
</script>
</body>
</html>