New answers tagged gps
My guess is that the fruit data 1) has no defined coordinate reference system, 2) it's been assigned the same as the zip code data, or 3) assigned the data frame's coordinate reference system (CRS). The zip code data and the data frame may be using the same coordinate reference system. If so, it's a projected one like a UTM or State Plane zone. The fruit ...
Some GPS hardware/subsystems in modern smartphones implement Kalman Filtering and sensor fusion. For example, this is the system log output (edited for relevant portions- full dump is here) from a Samsung Galaxy S3 with Android 4.3 after I fire up the LocationListener, when listening to the GPS_PROVIDER. Here you see the app (GPS Benchmark) listening for ...
I've answered this question in passing while answering another of your question. The Greenwich Observatory was defined as a prime meridian, based on the observations by the astronomer Sir George Airy in 1851. London was selected as the official prime meridian for international maps by the International Meridian Conference in 1884. When you use a GPS, by ...
The short answer is: there was a historical shift between the first global datum and the Greenwich meridian; and it continues to move (slowly) because of continental drift. You can find more detailed information on this site In the late 1950s (under the auspices of the US Navy), the Applied Physics Laboratory (APL) of the Johns Hopkins University began ...
I would use the Points To Line tool first to create lines for each route from your GPS points. I would then Buffer these lines by a distance that you experiment with - it will be related to how much variation there is in your GPS accuracy. The last step will be to Intersect your buffers to see where they (i.e. your car routes) overlap.
Depending on your level of accuracy I would suggest the following: Low level Accuracy Use QGIS for Android (free and has a gps toolbar) along with your tablet or handheld native gps High Level Accuracy Use QGIS for Android along with your vendor gps
There's an app - CPU Z, it should give all info about your chipsets .
Far from being complete, Openstreetmap has over 4000 km of the trail: http://hiking.waymarkedtrails.org/en/relation/371740# The GPX button should give you the data in GPX format.
As you said, differential correction is based on the correction of the position of EACH satellite viewed in order to compute a new position. So I confirm that it is NOT possible to do differential correction if you only have the coordinates, even if you had the exact time. If you want to improve the precision of your measurements with a unit that does not ...
I recently came across an article in GPS World stating that some of the more recent vehicles launched into space had small special mirrors attached to the satellite's exterior. Repeated laser beams sent from the earth's surface would reflect off the mirror, providing a more accurate estimate of the vehicle's location.
Oh Dear, oh Dear, Oh Dear - we are all in a muddle aren't we? Some of the answers are close, but not entirely clear. While I was part of a 3 man team which spent 2 years in the early 90's developing the first non-military differential GPS stations in the South West of England, we came across some extra-ordinary questions. 3 or 4 being one of them. To ...
Before you get down and dirty with implementing a TCP server from scratch, you may want to explore some other options. Depending on you business requirements and considering that it's a web app then something like a webservice might be sufficient (see what fits better SOAP or REST) and you change the server config to handle whatever load you expect. You ...
Just endeded doing what you're asking. I saved on a gpx "generic" file coordinates and I'll set the file up when I'll land where I'm going to go (I'm gonna rent a gps device, so I still don't know what model will be). When you create a polyline, then you can reach your coordinates using that function: var tra; dojo.connect(tb, "onDrawEnd", ...
There are two different issues here. The position of the satellite is a complex calculation based on a network of 400+ ground stations (IGS) and orbital characteristics (from keppler's laws). The orbite is computed with a precision of a few decimeters based on 25 stations, and this information is sent back to the satellite. The base stations are not used ...
GeoGuessr is one of the most addictive geolocation games I have played. You get points for pinpointing a random location on earth based on Google Street view--the more precise and accurate your guess, the more points you receive. Then challenge your friends to see if they can beat your score.
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