satellite

So it is known that the maps, either the regular street map or the satellite map, does not line up correctly in specific parts of China. So which map lines up correctly, the satellite map or the default street map? Some sites suggest that the satellite map is correct. But the Google Geocoder is placing locations correctly on the google street map and not on the satellite map. So if the satellite map is considered to be correctly aligned with China, does that mean that the Google Geocoder is also returning incorrect coordinates for locations in China? I have not been able to find any official

I am trying to retrieve the # of satellites used in the GPS fix. I have implemented two different methods, as shown below: package ti.utils; import android.app.Activity; import android.content.Context; import android.location.GpsSatellite; import android.location.GpsStatus; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; public class Gps { private static final int TWO_MINUTES = 1000 * 60 * 2; private static Location Location; public static int Satellites = -1; public static void StartTracking

I already created a bubble plot using the following code: library(ggplot2) library(sp) library(raster) library(maps) library(mapdata) library(maptools) library(gstat) library(ggmap) xy <- se_pp[,c("longitude_s", "latitude_s")] nl <- getData('GADM', country="Netherlands", level=2) #raster data, format SpatialPolygonsDataFrame # coercing the polygon outlines to a SpatialLines object spl <- list("sp.lines", as(nl, "SpatialLines")) SPDF <- SpatialPointsDataFrame(coords=xy, data=se_pp) projection(SPDF)<- "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +towgs84=0,0,0" coordinates(SPDF)[1:5,]

I'm trying to write a basic python script that will track a given satellite, defined with tle's, from a given location. I'm not a asto/orbital person but am trying to become smarter on it. I am running into a problem when I try to convert the azimuth, elevation, range values to a ECEF position. I'm using PyEphem to get the observation values and spg4 to get the real location to verify. I'm also using the website, http://www.n2yo.com/?s=25544 , the verify the values. I'm getting the observed azimuth, elevation and range with: def get_ob(epoch, sv, obsLoc): site = ephem.Observer() site.lon = str

I'm using a GPS provider and LocationListener.onLocationChanged(Location location) to receive location fixes. Documentation says, that Location.getExtras() contains next key/value pair: satellites - the number of satellites used to derive the fix but on practice I'm getting an empty extra object - there is no any data there. Does it means that I'm getting the A-GPS fixes and not GPS? user1055212 To get the number of satellites used by the GPS engine you need to implement android.location.GpsStatus.Listener and implement its method onGpsStatusChanged() . Example... public void