public EphGps findEph(long unixTime, int satID, char satType, Location initialLocation)
{
long requestedTime = unixTime;
EphGps eph = null;
int maxBack = 12;
while (eph == null && (maxBack--) > 0)
{
RinexNavigationParserGps rnp = getRNPByTimestamp(requestedTime, initialLocation);
if (rnp != null)
{
if (rnp.isTimestampInEpocsRange(unixTime))
{
eph = rnp.findEph(unixTime, satID, satType);
}
}
if (eph == null)
{
requestedTime -= (1L * 3600L * 1000L);
}
}
return(eph);
}
private RinexNavigationParserGps getFromSUPL(string url, Location initialLocation) /*throws IOException*/
{
RinexNavigationParserGps rnp = null;
string suplName = url;
int serverPort = 7275;
bool sslEnabled = true;
bool messageLoggingEnabled = true;
bool loggingEnabled = true;
File rnf = new File(RNP_CACHE, suplName);
if (rnf.Exists())
{
//System.out.println("Supl from cache file " + rnf);
rnp = SuplFileToRnpParserGps(rnf);
return(rnp);
}
//try
//{
//Log.Warn(TAG, "getFromSUPL: Getting data using SUPL client...");
//SuplConnectionRequest request =
// SuplConnectionRequest.builder()
// .setServerHost(suplName)
// .setServerPort(serverPort)
// .setSslEnabled(sslEnabled)
// .setMessageLoggingEnabled(messageLoggingEnabled)
// .setLoggingEnabled(loggingEnabled)
// .build();
//SuplController mSuplController = new SuplController(request);
//mSuplController.sendSuplRequest((long)(initialLocation.Latitude * 1e7), (long)(initialLocation.Longitude * 1e7));
//EphemerisResponse ephResponse = mSuplController.generateEphResponse((long)(initialLocation.Latitude * 1e7), (long)(initialLocation.Longitude * 1e7));
//if (ephResponse != null)
//{
// rnp = new RinexNavigationParserGps(ephResponse);
//}
Log.Warn(TAG, "getFromSUPL: Received data from SUPL server");
//}
//catch (/*NullPointerException |
//UnsupportedOperationException |
//IllegalArgumentException |
//IndexOutOfBoundsException e*/Exception e) {
//Log.Error(TAG, "Exception thrown getting msg from SUPL server", e);
//e.printStackTrace();
//}
return(rnp);
}
RinexNavigationParserGps getRNPByTimestamp(long unixTime, Location initialLocation)
{
RinexNavigationParserGps rnp = null;
long reqTime = unixTime;
// do {
// found none, retrieve from urltemplate
Time t = new Time(reqTime);
//System.out.println("request: "+unixTime+" "+(new Date(t.getMsec()))+" week:"+t.getGpsWeek()+" "+t.getGpsWeekDay());
//final string url = t.formatTemplate(urltemplate);
string url = "supl.google.com";
if (pool.ContainsKey(url))
{
lock (this) {
rnp = pool[url];
}
}
else
{
if (!retrievingFromServer.Contains(url))
{
retrievingFromServer.Add(url);
MyRunnable mr = new MyRunnable();
mr.url = url;
mr.initialLocation = initialLocation;
mr.retrievingFromServer = retrievingFromServer;
mr.pool = pool;
ThreadStart childref = new ThreadStart(mr.DoStuff);
System.Threading.Thread childThread = new System.Threading.Thread(childref);
childThread.Start();
/*
* (new Thread(new Runnable() {
* @Override
* public void run()
* {
* }
* })).start();*/
}
return(null);
}
return(rnp);
// } while (waitForData && rnp == null);
}
/** Compute the GPS satellite coordinates
*
* INPUT:
* @param unixTime = time of measurement reception - UNIX [milliseconds]
* @param range = pseudorange measuremnent [meters]
* @param satID = satellite ID
* @param satType = satellite type indicating the constellation (E: Galileo,
* G: GPS)
* @param receiverClockError = 0.0
*/
public SatellitePosition getSatPositionAndVelocities(long unixTime, double range, int satID, char satType, double receiverClockError, Location initialLocation)
{
//long unixTime = obs.getRefTime().getMsec();
//double range = obs.getSatByIDType(satID, satType).getPseudorange(0);
RinexNavigationParserGps rnp = getRNPByTimestamp(unixTime, initialLocation);
if (rnp != null)
{
if (rnp.isTimestampInEpocsRange(unixTime))
{
return(rnp.getSatPositionAndVelocities(unixTime, range, satID, satType, receiverClockError));
}
else
{
return(null);
}
}
return(null);
}
private RinexNavigationParserGps SuplFileToRnpParserGps(File rnf)
{
RinexNavigationParserGps rnp = null;
return(rnp);
}
