This project has been developed as a GIS/Location Based Service course on Technical University of Denmark.
Are you interested in this project or are you working on a related project, please let me know.
The following features were to be explored and hopefully implemented in a test-application
- Reading and parsing NMEA data from the GPS device connected to the serial port.
- Datacollection on device.
- Downloading maps from a Web Map Server (WMS Service).
- Receival of RTCM data from a RTCM broadcaster developed in an earlier project.
- Implementation of XML Webservices, such as online adress search.
- Additional webservices can be added as plugins
Following hardware and software were being used:
- Embedded Visual Basic 3.0 (dropped as of May 09. Replaced by CF.NET)
- MapInfo MapXMobile (dropped as of May 09. Replaced by WMS servers)
- Development language: C#.NET (.NET Compact Framework)
- UMN MapServer (OpenSource WMS Server) and the danish cadastrals mapservices (Kortforsyningen)
- ASP.NET XML Webservices
- Compaq iPAQ 3870 with PocketPC 2002 and .NET Compact Framework installed
- Sony Ericsson T68i cellular phone (connected to iPAQ via BlueTooth and to the Internet via GPRS)
- Garmin eTrex GPS Receiver with RTCM support (connected to iPAQ via serial link cable)
- Trimble Pathfinder GPS Receiver (master station in the DGPS setup).
The following features and tasks were more or less completed:
- Rewrite application to CF.NET
- Downloading of maps from WMS servers
- Reading and parsing NMEA data from GPS device. Created as a neat little GPS component for later reuse.
- Datacollection on device and direct upload to XML Webservice.
- Download of exisiting collected data from XML Webservice to device.
- Receival of RTCM data from a RTCM broadcaster partially implemented. Skipped due to problems with too many threads running. Also tried out the NTRIP RTCM broadcaster.(Note June 2004: This is now possible with PocketGpsLib).
- Optimized GPS and Data download/upload. GPS now runs on a different thread, without causing the application to be slow (thanks to T Jarmo for helping me out). Downloading maps is also done asyncronously, prevented the download from freezing the application.
- When recieving data from the GPS, a neat little marker shows your position.
- Datacollection can be done either by the position of a click on the map or at the GPS-measured position.
Further development has been stopped.
Links and resources: