This tag refers generically to *any* space-based satellite navigation system that provides location and time information.

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62 views

Are latitude and longitude independent of each other or correlated?

I want to develop a bivariate gaussian kernel in order to handle the random noise in my GPS tracks where each point has three parameters (lat, long and time stamp). I was wondering if latitude and ...
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0answers
90 views

How to calculate a missing (one or more) lat/long value of a bounding rectangle?

Is it possible to calculate an unknown (one ore more) latitude/longitude value of a bounding rectangle. The log file that I need to process provides a pair of lat/long values for Upper left and Bottom ...
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0answers
32 views

How to tell if a device supports Assisted GPS, and if how to get the Assisted GPS cooridinates?

1) Is Assisted GPS implemented at the hardware and OS level, or is it a hardware and secondary software thing. I've never used this so wondering what is required to 'access' this. I noticed a wiki ...
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1answer
64 views

Rotate the map to GPS heading / direction in ArcGIS using ArcObjects SDK 10 for .NET

Assuming I use ArcGIS or an ArcEngine application on a mobile PC. Is it possible to rotate the map in ArcGIS to the direction the device is travelling using a GPS receiver? If yes, how? I would like ...
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2answers
137 views

Areas where DGPS with post processing (not RTK) is still required

I am wondering in which domains or countries where Differential GPS (DGPS) with post processing (not Real Time Kinematic [RTK]) is still required? It's known that RTK has been rapidly adopted by ...
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1answer
122 views

Difference between Positioning and Localization

I would like to know what are the differences between Positioning and Localization. In most papers they are used interchangeably. Are they the same? Does one come after another? I always thought ...
2
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1answer
70 views

Most accurate GPS hardware for less than 1 mile radius [duplicate]

I apologize if this is a duplicate but I can't find a good answer or area to know where to find the correct answer. I am looking for the technology or hardware around wearables or similar technology ...
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0answers
31 views

Latitude & Longitude values from Simple Voyage Data Recorder [SVDR]

I am receiving values in the form of 0113.7276,N,10339.0121,E from a Ship Data Recorder. I am not a GIS/ GPS expert and am unable to decipher what do these values mean, because they are out of range ...
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1answer
2k views

Looking for an android solution for offline kml/kmz file viewer with gps support

I have some KMZ files of cadastral maps. I need to fiscally go to the boundaries of my lands (parcels) and take a look at where they are with the gps and maps support. Some of these places are not ...
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4answers
205 views

Uploading maps to GPS (forestry maps: roads, trails, hydro, polygons)

I'm using a QGIS 2.2.0 Valmiera on a Windows 8.1 system Desktop. I'm a forester and I would like to have a cheap solution to load maps into the handheld Garmin 60, 62 or 64 series GPS. Free would be ...
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0answers
30 views

how to join 1second GPS data with dGPS using much shorter time interval?

for one of our measurements we rented a dGPS with a portable "rover". I have now our measurements from our device which also contain data from built-in GPS (1 second sampling rate) + also the dGPS ...
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1answer
301 views

Android API - how get the car position (fixed to the road)?

All the android.location classes receives best REAL position of the GPS. Is that any way to get from Google navigation API the CAR position x,y - fixed (tighten, interpolated) to the closest road on ...
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1answer
324 views

GPS tracking and Web mapping?

We are developing a tracking software and we are the stage where we test the reliability of our location stigma on the following web-maps Google Map Nokia HERE Open Street Map (OSM) We observe ...
2
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1answer
120 views

Calculating countries flown over on flight path

Say I have two airports given. I can then get their coordinates. Now that I have the beginning and end coordinates I can draw flight-path from the two locations. Now my question is that given two ...
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1answer
62 views

Simulating historic GPS data on map [duplicate]

I have some really basic newbie questions. I have following data with me: ESRI Shape files (.shp, .shx, .dbf, .prj, .sbn and .sbx) KML/KMZ files GPS coordinates (~400k) of some cars (~50) tracked ...
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1answer
157 views

Is it possible to see polyline as route or track data on GPS?

I would like to see polyline on GPS. First, I try to convert polyline to GPX. I uploaded GPX on GPS. SO far, I could not see the line on GPS. First of all,is it possible to see polyline as route or ...
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1answer
66 views

Best method to find routes from a set of points

I have lines table (postgis enabled database) representing the streets. I have collected few gps points along a route and I would like to match it with the streets in order. Scenario - I am jogging ...
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10answers
3k views

Need a Benchmark GPS Trajectory data-set? Anyone?

I'm looking for a benchmark GPS data set, available for research purposes for free. I've found GeoLife GPS Trajectories dataset from Microsoft Research but I find it a little incomplete. What I need ...
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0answers
31 views

Dataset required with GPS and accelerometer data

Can anyone please suggest me site or provide me a dataset which has GPS data with accelerometer data as well.I am doing a project where using accelerometer data i am trying to improve the accuracy of ...
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0answers
57 views

I'm new to GPS, and I had a quick question about clarity.

I'm working on a project for class, and I'm mapping GPS on Google Earth with a KMZ file. I used a handheld GPS 24°6.691'N + 74°27.833'W. How accurate is my coordinates? I know I'm in decimal ...
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0answers
38 views

Use of RRC(Range Rate Control) in Pseudo Range Correction for satellite

Can anyone tell me the use of RRC in order to calculate the value of PRC(pseudo range correction) in PPK(post processed kinematics)?
2
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1answer
487 views

Converting GPS Positions to Google Maps

I have a set of GPS-coordinates in a database, which I want to compare to a coordinate supplied by the html5 location API. My coordinates look like this: <WGS84Coordinates> ...
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1answer
41 views

Post Processing Algorithm

I am working on project In which I am supposed to make a web app which will be asking users to upload their inputs as "Rinex file" of Rover and Base Station and It will give more precise data after ...
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0answers
74 views

Convert from gps coordinates to EPSG:32640

I need to convert latitude and longitude witch i get from gps to EPSG:32640 (in C#). What is best and fastest method for that? Thanx
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0answers
41 views

50m x 50m grid around the world

I'd like to subdivide the earth into a grid of approx. 50 x 50 m cells (big database, I know). To make it more complicated (and fun), I also need to be able to determine to which cell a given set of ...
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1answer
53 views

Can we manually select which satellites to use in solution? [closed]

For example, I have used below satellites ID in current solution: ID Signal Strength ______________________ 1 21 22 23 19 12 36 26 20 18 3 29 32 ...
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1answer
56 views

How should “consumer oriented” geographical applications be called?

I se the term GIS being used for professional applications, while there is a growing interest on applications (online or desktop) that use Web Maps and User-Generated GPS Data so that individuals can ...
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1answer
131 views

How to convert gps receiver native format to google lat long or XY format

I have received some GPS co-ordinates in the following format like - "17267690N 078279340E".. How to convert the co-ordinates to show it on Google map.
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1answer
158 views

Project point to map with Arcpy using GPS Coordinates

I am trying to create a new layer with just a single point using arcpy. All that is provided is a gps lat and long. It seems like it should be a simple problem but I just can't get it to work. I've ...
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0answers
82 views

Looking for a good solution to have GPS position on KMZ files on Android platform

I'm looking for the best solution / app on the android platform to show my GPS position over a KMZ file, possibly offline. Here is what I've tried to do: Google Earth Android app I downloaded KMLZ ...
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2answers
61 views

Identify circuits/loops in GPS track data

This question will be naive and uneducated, but I gotta start my research somewhere, so I'll ask for references and pointers... Let's say you have a GPS time series with a set of lat/long coordinates ...
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1answer
49 views

Why is “Add feature” of the GPS Information tool inactive for some of my PostGIS layers?

Sorry If I rise it again on this forum but I couldn't find any info on limitations/requirements of "GPS Information" tool for QGIS (2.2.0) against data layers. For some layers I'm able to collect ...
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41 views

GPS positional, and quality data collection using QGIS

I was wondering if it was possible to record the position along with some of the quality control data in a table when using the GPS information functions to collect some mapping data. I would like to ...
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1answer
873 views

How can I convert Horizontal dilution of position to a radius of 68% confidence?

I am working at mobile app that uses external GPS module. What I need is to calculate accuracy for the fix from GPGGA command to be able to compare it with my mobile platform's GPS accuracy. Mobile ...
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1answer
110 views

How to know the exact country or province from the longitude and latitude information automatically?

To be more specific, how to find all of point (from 1,000,000 items) located in England, or located in California? I need to process over 1,000,000 items, so a offline and automatic way is needed. ...
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4answers
2k views

How to match GPS collected data to routes on Google Maps?

I am using Google Maps to implement a GPS Monitoring system of data collected from vehicles. My problem occurs when the points and lines do not match with the route and cut through other streets and ...
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3answers
4k views

Accessing GPS data with JavaScript in real time

Is it possible to access GPS data in real time on a smartphone with JavaScript (without an android or ios application I mean)? Thanks
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1answer
567 views

What will happen when Russia shuts down the GPS stations?

Russian officials are seriously talking about shutting down US GPS ground stations within their borders and Deputy Prime Minister of Russia tweeted on the subject. What will happen to the GPS? My ...
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0answers
148 views

Java script vehicle tracking application

I am using ArcGIS and Server to build n application to track vehicles via tablet GPS in the vehicles. My original plan was to use a feature class to store point location and then display the most ...
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1answer
79 views

GPS and One-way Streets

I'd like to know how GPS can determine if a street is one-way. Does it detect one-way signs or parked car positions if any?
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3answers
398 views

Using PROJ.4 library to transform from local coordinate system coordinates to global coordinate system using ground control points?

I have a point cloud whose coordinates are with respect to a local coordinate system. I also have ground control points with GPS values. Can I convert these local coordinates to a global coordinate ...
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1answer
65 views

Adding tracks to gps with QGIS feature attributes as name

I am attempting to send a vector layer to a garmin gps in QGIS. I am using the GPS Tools extension and have created a new GPX layer. I can add waypoints without any issues, but when I copy features ...
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1answer
108 views

Pure html based indoor navigation

I would like to locate (position) people inside buildings without forcing them to download a native app. I'm focusing on iOS and Android devices. I therefore thought about wifi triangulation ...
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1answer
54 views

Adding GPS tracking data from Excel into QGIS

Sorry if this is an easy question! I have added GPS points in QGIS however all of them are the same colour. I want the points to be coloured differently for each individual. How do I do this? Thank ...
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2answers
189 views

How to find when train nears station? [closed]

I am creating an app for tracking trains. When the train comes near to a railway station the system should identify it. To do that I want to gather GPS coordinates near the station and save them. ...
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0answers
93 views

GPS tracking using smartphones [closed]

We're looking to launch a study that examines spatial behaviour on a university campus. Given the near ubiquity of smartphones among our study population, we're excited about the possibility of using ...
11
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5answers
8k views

Convert XY points to a line?

Someone mistakenly saved a GPS track as waypoints and then sent them along to me in a .csv file. They want a line back (shapefile). What's the simplest method to convert this to a line? Available ...
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1answer
102 views

Taxi fleet simulation - MATSim a useful tool?

I am working on a university project and I would really appreciate some advice: My project consists in modeling the taxi fleet of a major city and investigating if replacing a percentage of the fleet ...
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1answer
116 views

How can I add 3 axis orientation information to my photos?

I have a survey project where I need to record not only the location, but the direction (bearing and angle of elevation/depression) that the camera was pointing at the time the picture was taken. ...
2
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1answer
160 views

What is relation- difference and/or similarities between PPP, SBAS, GNSS, RKT?

Recently i came across lot of terms such as IGS, GNSS, GPS,PPP, WAAS, EGNOS, GLONASS, CORS and many more ... I know some of them I can group them such as GPS, GLONASS, GALILEO . And then there is SBAS ...