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

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77 views

What is the relationship between Map Service Instances and SDE connections?

We have a GPS project based on ArcGIS Mobile 10.0. There are two web map services and each were kept as Nonpooled with Minimum instances 15 and maximum instances 60 by original developer. The database ...
2
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1answer
73 views

Download from GPS / changing SCR / still not working

I use a GARMIN GPS; I download my points from the GPS by using GPS tool; I "try to" change projection (SCR) by changing layer property/specify SCR Still, it not working and I cannot view my layer on ...
0
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1answer
905 views

What is correct entry to Input Location (GPFeatureRecordSetLayer)*?

I use: http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Network/ESRI_DriveTime_US/GPServer/CreateDriveTimePolygons/execute What is correct entry to Input Location (GPFeatureRecordSetLayer) ...
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2answers
176 views

Add waypoints to ArcMap using GPSBabel

I've been trying to add waypoints to Arcmap for some while now. I have a Mac OS X 10.6.8 and have finally found GPSBabel that is compatible with mac. My current problem is to convert the waypoints ...
1
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1answer
470 views

How to improve accuracy or extrapolate missing or bad GPS points

Is there an easy to use freeware tool to postprocess my location data, in order to correct 1) location errors (or improve accuracy not based on differential GPS correction) and 2) deal with missing ...
2
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1answer
109 views

Open Source + Offline Geo Notebook

I am looking for an open source offline software to record points of interest that I might visit at a later date. Let's say I am reading a book about Alaska, I'd like to take notes about interesting ...
16
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1answer
672 views

How can I statistically calculate the “real” road from a set of GPS tracks

I participate in a long-distance cycling club, and we started to collect GPS data routinely from our riders. My interest is to calculate "the real trajectory" for future events based on accumulated ...
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1answer
79 views

Need gps trackers for social science research [closed]

I'm interested in studying people's movement over time (24 hours), and would like to do so with devices that also measure elevation very accurately. I understand there's stuff out the where I can buy ...
0
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1answer
74 views

GPS NÜVI 50 -Garmin

I would like to know the accuracy in degrees (not feet) of the latitude and longitude coordinates that the GPS NÜVI 50 gives for a point.
2
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1answer
188 views

How to Deal with Overlapping Coordinates in Statistical Analysis

I decided to make an archaeological map about certain tombs distributed in the area of Crete and make some statistical analyses using the spatial statistical tools of GIS. Specifically, I'll be ...
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3answers
151 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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1answer
614 views

Import GPS data (text documents files) to QGis

I want to import GPS data (text document files) in to Qgis, what file format are you suppose to use ?
3
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1answer
379 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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1answer
190 views

Not able to convert GPS coordinates received from a software into Latitude and Longitude

I am working on a software which returns GPS coordinates in this format: Lat : '48684499' Lon : '5203474' I can not understand what type of coordinates are these and not able to convert them into ...
1
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1answer
727 views

Conversion from NZMG to latitude and longitude

I want to convert NEW ZEALAND MAP GRID coordinates i.e. Northing and Easting into WGS84 coordinates i.e. Latitude and Longitude. I have searched on internet but there is no proper explanation of how ...
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0answers
57 views

GPS alarm system for my boat [closed]

I need a GPS alarm system for my boat, in case of theft. Maybe notifying me any anomaly on iPhone. How are they called "GPS Tracking" ? I actually don't need to track my boat while sailing, but just ...
2
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2answers
499 views

Vehicle tracking by QGIS

I need to do routing for a vehicle. A map with detailed turn-by-turn driving directions should be generated. For example, it should be like car race game in which the map with vehicle tracking is ...
2
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0answers
133 views

Adjusting GPS collected data to a polyline shapefile [duplicate]

I am collecting data from a GPS that is attached to a car. When I display this data in a map, the set of collected points are supposed to match with the street shapefile. However what I see in my map ...
0
votes
1answer
115 views

Converting an Experian (Geoconcept) file to GPS coordinates

I'm working with a file containing Experian data which was used in Geoconcept. The file describes a serie of microzones, that is polygons. Unfortuntely the coordinates system is hard to understand: ...
2
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1answer
428 views

Android GPS: average location resolution time

What is the average location resolution time on a SmartPhone(Android) GPS? Assumptions : The user is under the open sky.
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0answers
68 views

Issues for 3D length using GPS road tracking for undulated topography

We are tracking road network for undulated topography using Trimple Juno GPS. Is it any problems for 3D length using UTM projection? Thanks to Advance
2
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2answers
378 views

Loading GPS information into map and track waypoints?

I am using QGIS 1.8 in Ubuntu 12.04. I am working with Robot Operating System (ROS) and QGIS simultaneously. My ROS system is connected to LIDAR (sensors) that will publish GPS message so, I could ...
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0answers
1k views

Calculating Accurate % Grade from GPS Coordinates

I am trying to calculate % Grade from GPS points. I am using the basic equation of (Rise/Run)×100 The problem is I am getting spikes in my GPS data (example 1 meter rise for 3 meter run), I am ...
2
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1answer
255 views

iPhone app to record 3D location information

Does anyone know of an app that would run on an iPhone or iTouch that would record the X,Y and Z information from an external GPS? I am using a Dual XGPS150 Bluetooth receiver. The GPS will record X,...
4
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1answer
582 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 ...
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0answers
64 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 ...
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0answers
42 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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0answers
185 views

QGIS GPS bluetooth connection

I have setup a Haicom bluetooth gps on a machine running Windows8 and have used GPSGate to create some virtual COM ports. I have valid data arriving at the COM port, but then I run QGIS and try to ...
2
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1answer
84 views

Where would a perfectly vertical vertical tunnel through the earth come out?

I am a programmer. I have a point P1 (lat,lon) given by GPS (WGS84) and I want to know the location of a point P2 if I make a straight line from P1 to the other side of the earth. I have read some ...
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0answers
69 views

How to measure area of polygons generated from gps data in qgis? [duplicate]

Somebody classified my question as a duplicate. But applying the answer doesn't work for me. Here is what I did: - I made sure that my layer is in a projected coordinate system (UTM30N, WGS84) - I ...
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2answers
3k views

Converting from local coordinates to coordinates GPS?

i am working with business object tool traying to make a kml file to be imported on google maps. I dont know much about geographic systems, but i begin to understand some basic things. I have a ...
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1answer
214 views

Which application generates *.MAG, *.MOB and *.CAR files?

I have following type of files (I have tried FME too.I think they are DGPS generated file?) ".MAG" , ".MOB" and ".CAR" extension files many more ".SES" ,"ERR", "LOG" several I have attached files ...
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0answers
294 views

Should 2D Positions and 3D Positions be considered conceptually different entities?

Let's suppose we want to model GeographicPositions, described by coordinates or coordinate tuples inside some Coordinate Reference System. Also, these would be put inside some sequence to represent ...
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1answer
3k 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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0answers
153 views

Literature on the appoximation of trajectory points with (smooth) curves

We are gathering trajectories of GPS points of moving objects (cars, bikes, etc.) and would like to compute approximate curves (that may self-intersect) that would represent those clouds of points. ...
2
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1answer
303 views

How to use OpenLayers Geolocate with the OpenGeo Suite Client SDK?

I’d like to have GPS functionality added to my OpenGeo Suite Client SDK application. From what I understand it should be possible to use the Geolocate control from OpenLayers. Preferably there ...
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0answers
539 views

How to import raster data in GPS with Arc GIS

How do I see the map on GPS as a background layer? In QGIS, I could see the map which is converted from shape file & raster data on QGIS with "Garmin Custom Map". I need to do the similar thing ...
3
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1answer
445 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 ...
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4answers
6k 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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2answers
227 views

Survey Data to GIS database [closed]

This is a General Question on a possible workflow for Survey Data directly to ArcGIS In most GIS/Survey workflows there is a field collection team and backoffice GIS team. When the availability of ...
7
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2answers
1k views

How to Georeference Photos With No Spatial Reference?

I have about 100-200 field ground shot photos I would like to overlay in ArcGIS 10 that have no spatial information which I need to somehow develop using a photogrammetric formula. The camera was ...
2
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1answer
661 views

Transformation from WGS1984 to ITRF2008

We are using Projected Coordinate System: Ain_el_Abd_UTM_Zone_39N (Transverse_Mercator) in our GPS Devices and have valuable Coordinate data. Can I change the projection of this data this to WGS 1984 ...
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0answers
149 views

Kalmanfilter GNSS IMU

I want to make an uncoupled Kalman filter. The input data are GPS and the output of my strapdown Algorithm from the IMU. The Strapdown Algorithm is used to calculate the actual position and velocity ...
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0answers
61 views

windows function with points in a mixed (multipoint/point) table

I have a table comprising multipoints (tracks) and points (stops between tracks). there can be several consecutive multipoints. now, i want to merge any points lying very closely to each other (...
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0answers
139 views

Summing time spent on effort from point GPS data tracks in grid cells?

I have one layer of point data representing GPS tracks collected during vessel surveys (an individual survey is indicated as the time between departing and returning to shore and there can be more ...
7
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3answers
1k 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 ...
0
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1answer
502 views

Unable to reference GPS waypoints correctly in ArcGIS

I'm working on a project. Waypoints were taken in the field with a Garmin Dakota 20. I've tried two different ways of putting them into ArcGIS. One way is through converting the GPX file to a ...
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1answer
2k views

GPS Coordinates to WKID 102100

I'm currently creating a project for ios and I'm using the latest ArcGIS IOS api. I have a mapView that is using the spatial reference skid 102100 and i am receiving lat long coordinates from an ...
3
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3answers
379 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?