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

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98 views

Calculating speed along point feature class (.gpx) in ArcMap?

I have imported a .gpx file into ArcMap as a point feature class. Each feature has a Point z as well as a DateTime. I want to create a graph that shows speed as a function of distance. How do I do ...
3
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1answer
297 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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3answers
141 views

Is it necessary to use a third party service for serving this case?

I have been assigned a task to help build a mobile app, which only shows terrain view of map with a fixed (min/max) zoom level based on mobile phone position and moveable markers which are provided ...
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2answers
322 views

Several questions about using spatial data?

If you have spatial data for SQL server, can you use the spatial data (both geometry and geography) in another application for instance ESRI ArcGIS? Is spatial data a standard that every GIS ...
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2answers
221 views

What is the minimal data necessary to reconstruct GPS location?

Imagine that a minimal GPS device is attached to a moving object (animal, shipping container, geocache object, etc). Every few months, data from the device is downloaded for post-processing. What ...
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2answers
831 views

Import Trimble Data without Pathfinder

I don't have Pathfinder on my computer. I need to pull data off of my Trimble unit (Geoexplorer 6000 series) and save it on an external hard drive or USB key, without using Pathfinder. This way, I can ...
3
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2answers
435 views

Measuring Continuous Distance of GPS track in ArcGIS Desktop

I am looking for a way to quickly measure the distance covered of GPS tracks of foraging Seabirds. A tool that could give accumulative distance of point to point from the long and lat coordinates ...
3
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1answer
852 views

How can I get the GPS info from a PNG?

I am trying to get the GPS data from several hundred PNG photographs for display in Q GIS (so need to access the EXIF data). The online and downloadable viewers I have tried haven't yielded much ...
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1answer
75 views

List of actual GPS position

I have a question - where can I find a list of actual GPS position, for example - ships, airplanes etc. I need it for my project for College - I will create mobile/desktop/web app, which will show ...
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3answers
212 views

How long for surveying quality GPS to get accurate 3D position information

I recently read an Ordnance Survey Blog article that seemed to suggest that it was necessary to leave the GPS device in use for four hours to gather requisite data. I am aware that "domestic" GPS ...
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2answers
2k views

How to upload polygon shapefiles to my GPS?

I used QGIS to create a table (*.shp) containing 3 polygons. These polygons represent "forbidden zones" that I would like to export to my Garmin GPSmap62st so once on the countryside, I'll can see my ...
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1answer
186 views

is the GPS network free or available for any device?

I have a question (I'm really sorry if is kind of dumb question). But if I have a device with GPS (smarthphone,pda,pocket pc, etc) Does the device need any additional service to enable GPS data? I ...
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3answers
1k views

GPS drift during the receiver is stationed

I have developed a GPS Tracking device it is working fine when the receiver is in motion, when it stationed in a position for couple of hours i get some drift for around 10-15meters. The receiver send ...
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2answers
972 views

Alternative to Terrasync for Trimble Windows Mobile unit

I have a number of Trimble Nomad 900 series devices and am currently using TerraSync. TerraSync does the job, but are there any other alternatives out there that would be even simpler to use? ...
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2answers
803 views

in seach of gps tracking (web) service to use with rails web app

hey out there GISers, i am looking for a gps tracking service i can hook gps devices into and request their infos via a ruby on rails webapp. does anybody know some? any help is appreciated! thanks, ...
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2answers
318 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
279 views

QGIS: Colour GPS track by speed

sorry íf I might ask this question the 101 time, but I didn't found anything with google or SE. I have a CSV file with WGS84 trackpoints and visualizing them with QGIS textplugin works fine. The log ...
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3answers
301 views

Can ArcGIS Desktop or ArcPad use the Windows Location Provider?

Are there any plans for ArcGIS Desktop or ArcMap to get the GPS Coordinates via the 'Windows Location Provider' in Windows 7/8 instead of reading a virtual com port?
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3answers
1k views

GPS device taking pictures and saving heading + HDOP?

I'm looking for a device that can do all of the following: Take picture Save lat-long GPS position + heading (angle to North) of picture [so need tilt-compensated 3D compass], in exif or other ...
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1answer
309 views

How can a single line be computed from multiple possibilities

I have datasets containing continuous GPS streams of data that represent routes or trails. For any given route, I probably have at least 5 (in some cases many more) different sets of data. Given that ...
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1answer
544 views

GPS waypoint mapping with android phone

I am a bat enthusiast and volunteer regularly with the local bat groups on bat surveys. In them we record bats with a bat detector - making a note of the different species (there are 18 in the UK), ...
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1answer
2k views

Is there an industry-standard official mapping of GLONASS satellites to “PRN” values?

In the U.S. GPS system, satellites are uniquely identified by the PRN number broadcast by each satellite. This ID is usually visible on most GPS receiver platforms that provide access to individual ...
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185 views

best bluetooth gps for marine applications

What is the best gps to get as an add on for an android (asus tf300)? This is for a marine application I am writing. I need sub 5 meter accuracy. Would like decent accuracy at moderate speeds. I ...
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89 views

set wrong GPS unit in “degree” and want to change to “meter” in GIS while editing

I want to edit the GPS result in ArcGIS, but I found that there is a problem. I set the wrong unit while I used the GPS outside , and the unit is "degree". Although the coordinate system is correct, I ...
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2answers
467 views

How to get the layers of my project to show while tracking with GPS?

I've been using/testing several versions of various GIS software and run into occasional issues. Right now, my biggest with QGIS is with GPS connection/downloading from/tracking. These are all ...
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3k views

Difference between Garmin eTrex Legend HCx and eTrex 30?

I have used etrex Legend HCx a lot and been satisfied. Now I've seen etrex 30 just for a while and it seems to me that the Legend is much more user friendly, good old menus with a lot of ...
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2k views

How to read multiple .gpx files in R [closed]

Suppose I have a number of .gpx files (these contain GPX waypoint data from a Garmin eTrex). I want to load them into R with different names and manipulate them. I can read one file thus: ...
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1k views

File IMG from OSM

Is it possible to convert or open an IMG file from OSM? I don't find a solution for the visualization and conversion. Thanks
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1answer
1k views

show position on google map/earth, from gps data, using google API

For those that have used google's API for mapping (google maps/earth), I would like to know if is it possible to develop an application to receive NMEA data from a gps receiver, extract position, and ...
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1answer
192 views

Address and coordinates of European cities request

I have a database of couple of millions of records which I would like to geocode. The data consists of addresses and council. All addresses are of a certain European city. Questions: May I have ...
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1answer
183 views

Trimble GPS data is not displaying in ArcMap attribute table

I am currently having difficulty trouble shooting a problem. While using a TRIMBLE GEOXH (GeoExplorer 2008 Series) I have the problem of missing data after exporting it to ArcMap from my GPS receiver. ...
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1answer
62 views

Exporting massive gps tracks to a map

I have about 1000 vehicle equiped by a GPS sensor and 3G connection. Each vehicle feeds a csv file -using 3G connection- with its current location every 5 sec. Each vehicle have its own CSV file. ...
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60 views

Is there a method to tell which hemisphere a point belongs to, in WGS84 geoid, where the equator is an arbitrary ellipsis?

I use the WGS84 geoid (because I'm working with a GPS chip). I define an ellipsis that splits the surface in two parts, lets name these 'A' and 'B'. This ellipsis is defined by two points 'a' and ...
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1answer
152 views

How to calculate “stop points” from a set of GPS tracklogs?

I have a set of GPS tracks pertaining to a cycling event that happened in the same day. I don't have much geographical information about the event itself, except for the tracklogs I downloaded from a ...
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1answer
231 views

Automatically panning the map in ArcGIS when using the Time slider

I have a point dataset with time-stamps at 1 minute intervals showing a driving route. I have enabled the Time properties of the layer and I am able to use the Time slider to see the points move ...
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1answer
3k views

Replace Navteq maps by a free one in a car built-in GPS

My car (Opel Zafira) have a built-in GPS with Navteq maps (SD 900 NAVI). I wonder if it would be possible to update or upgrade the maps to an open source / free maps (like OSM). Or is it possible ...
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1answer
302 views

Is there any methodology or technology to post process the Mobile/Tablet GPS data

We have developed an application which is running on android OS for collecting the Lat/Long value of any feature and it runs in any type of android Tablet/Mobile but the problem is that the accuracy ...
3
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1answer
333 views

QGIS: plotting real time lat/lon GPS input on a different projection

I'm trying to plot realtime GPS over a satellite image in QGIS 1.8. The GPS data is coming in as NMEA lat/lon from a Garmin Etrex. This works when the image is in WGS84 lat/lon projection and ...
3
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1answer
1k views

Is machine learning used much in GIS?

I'm new to GIS. Is machine learning used much in this field, and where? I'm investigating a job opportunity with a mapping company working on traffic awareness. My background is in supervised machine ...
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1answer
289 views

Join GPS points obtained from .GPX file in Python Console

Having loaded the .gpx file into a new layer from python console, I'm unable to access the gps points in the attributes table. Essentially, i'm unable to join these points to form a polygon ...
3
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1answer
294 views

Access Trimble GPS on ArcGIS Engine App

I have a Trimble Yuma tablet running Windows 7. I need to build an application that allows viewing of points on a map and editing of a geodatabase (feature layers and tables). I'm hoping to use ...
3
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1answer
284 views

How to overlay map onto a corner of an image, using that image's GPS exif data?

I have several hundred JPG images taken during a time lapse of a drive, with each image containing embedded GPS information. Is there an OS X friendly workflow that can allow me to: create a ...
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1answer
408 views

GPS problem in QGIS

I have a very strange problem that I cannot understand. I am trying to put together a demo-laptop with QGIS and gps. On other computers I have it working as expected, but on this particular box ...
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2answers
504 views

Classification of GPS trajectory

I need a detailed description of a GPS trajectories. I don't need to know what a GPS trajectory is, I already know it. Exactly I need a paper (better if scientific cut) that talk about different type ...
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1answer
389 views

How to export offsets from Trimble Rangefinder?

I already asked this question at http://www.rpls.com/forums/viewtopic/8/1276880, but didn't get any answer so far. Maybe here someone can help... I have a question about the use of Trimble Products. ...
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1answer
533 views

Can an htm file be imported into Trimble's Data Dictionary Editor?

We've received several data dictionary files from other entities and they all are in *.htm format. We were hoping to not reinvent the wheel, as these are massive data dictionaries, so does anyone know ...
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1answer
54 views

Need to include GPS data in a GIS system

I work for a small telematics company and we received a request from one of our clients about integrating their vehicle GPS locations to their ArcGIS system. Our current system simply displays this ...
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170 views

How to determine and send alert SMS for next bus stop in a GPS tracking system?

In my gps tracking system (PHP/MySql) I have got 5 Stops for a vehicle. Whenever the bus reaches stop 1, the passengers at stop 2 should get an SMS alert. And in the same way for the sops followed ...
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1answer
2k views

Build a website to track GPS signals [closed]

I need to build a solution that allows me to track cellphones/tablets and display on a visual map. I think there are two parts, one is understanding the general architecture. The other is more ...
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63 views

what criteria should I consider in buying a pocket GPS

It's my first time making this kind of choices, and I really don't know how to go with a choice or another. I basically know that it should have good durability , a good battery life and good ...