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CodeProject: Writing GIS and Mapping Software for .NET. Free source code and programming help

published 987 days, 2 hours, 23 minutes ago posted by

http://jonnyboats.wordpress.com/ 1045 days, 12 hours, 54 minutes ago

CodeProject: Writing GIS and Mapping Software for .NET. Free source code and programming help

Download C# and VB.NET source code - 42 KBIntroduction In part one of this series, I described how to write an interpreter for raw GPS NMEA data. Part two described how to monitor and enforce GPS precision data to develop commercial-quality software. The articles includes source code in C# and VB.NET which harness the power of GPS satellites to determine the current location, synchronize the computer clock to atomic time, and point to a satellite on a cloudy day. Yet, even with all of this code, most de... (more)

category: News | clicked: 1 | comment | | source: www.codeproject.com

tags: .NET, GIS, GPS

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CodeProject: Writing Your Own GPS Applications: Part 2. Free source code and programming help

published 1006 days, 21 hours, 30 minutes ago posted by

http://jonnyboats.wordpress.com/ 1045 days, 12 hours, 55 minutes ago

CodeProject: Writing Your Own GPS Applications: Part 2. Free source code and programming help

Download C# and VB.NET Source CodeIntroduction In Part 1 of this article, I described how to write an interpreter for raw GPS NMEA data. The article included source code in VB.NET which harnessed the power of GPS satellites to determine the current location, synchronize the computer clock to atomic time, and point to a satellite on a cloudy day. The interpreter also works with hand-held devices and supports international developers. Yet, the interpreter was really not suitable for commercial use because... (more)

category: News | clicked: 3 | comment | | source: www.codeproject.com

tags: .NET, GPS

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CodeProject: Writing Your Own GPS Applications: Part I. Free source code and programming help

posted by

http://jonnyboats.wordpress.com/ 1045 days, 12 hours, 56 minutes ago

CodeProject: Writing Your Own GPS Applications: Part I. Free source code and programming help

Download C# and VB.NET Source Code - 13.25 KB “I am continually amazed by how little code is required to use atomic clocks in satellites 11,000 miles above my head.”Introduction What is it that GPS applications need to be good enough to use in a commercial environment, such as in-car navigation? Also, how does the process of interpreting GPS data actually work? In this three-part series, I will cover both topics and give you the skills you need to write a commercial-grade GPS application that works wi... (more)

category: News | clicked: 0 | comment | | source: www.codeproject.com

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tags: .NET, GPS

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Garmin Hacking Project

published 1046 days, 2 hours, 19 minutes ago posted by

admin 1046 days, 19 hours, 47 minutes ago

If you don't want to pay Garmin for their expensive connector for the GPS38/40/45/90 then check out the first sharehardware project for a low cost connector from the Purple Open Project. This page is not about hacking the map formats but is about an older issue with 8 channel GPS units and doesn't effect any Garmin GPS reciever made in the last half decade. The GPS45 has a 90.0022kt (104mph) speed limit. It was our intent to find a way arround this. It is also our intent to publish full details o... (more)

category: News | clicked: 2 | comment | | source: www.abnormal.com

tags: GPS

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DGPS corrections over the Internet

published 1046 days, 2 hours, 19 minutes ago posted by

admin 1046 days, 20 hours, 7 minutes ago

Introduction On a stationary GPS without a differential correction signal, you should see a 20m average radius "random walk" pattern. On the same receiver with DGPS corrections and a good view of the sky, the error should be reduced to approximately 2m average radius. If you've always wanted to see how clean the GPS signal is once the government-induced noise signal is removed but didn't want to spend the money for a DGPS radio, here is your big chance! I'd like to announce a fun DGPS hack. I've wr... (more)

category: News | clicked: 1 | comment | | source: www.wsrcc.com

tags: GPS

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Obtaining raw data from some Garmin GPS units

published 1046 days, 2 hours, 19 minutes ago posted by

admin 1046 days, 20 hours, 12 minutes ago

Obtaining raw data from some Garmin GPS units

Introduction Async Event logger for some Garmin units RINEX file generation from Garmin units Preliminary results of postprocessing G12 raw data More extensive results of postprocessing G12 raw data NEW: Navigation message (EPHEMERIS and more) found in some Garmins Supported units Download the programs Ports of async/gar2rnx to other machines (more)

category: News | clicked: 1 | comment | | source: artico.lma.fi.upm.es

tags: GPS, programming

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.NET GPS Vehicle Controller - Home

published 1047 days, 1 hour, 35 minutes ago posted by

http://jonnyboats.wordpress.com/ 1047 days, 15 hours, 8 minutes ago

Project Description This project allows the connection to a GPS unit transmitting NMEA data on the serial port and displaying the current position on Google Earth. There are also logging capabilities and control gauges for visual feedback on GPS data. (more)

category: News | clicked: 0 | comment | | source: vehiclecontroller.codeplex.com

tags: .NET, Google, GPS, open source

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Notes on Writing a GPSD Driver

published 1047 days, 23 hours, 51 minutes ago posted by

http://jonnyboats.wordpress.com/ 1048 days, 18 hours, 14 minutes ago

Notes on Writing a GPSD DriverMickDurkinRevision HistoryRevision 1.61 Mar 2009er Updated by esr to reflect removal of the cycle member. Revision 1.51 Mar 2009er Updated by esr to reflect the parity/stopbits extension of the sopeedswitcher method. Revision 1.417 February 2009er Updated by esr to reflect the renaming of sirfmon to gpsmon, and document the controlsend method. Revision 1.314 November 2006md Updated to conform to SVN 3884. Ab... (more)

category: News | clicked: 0 | comment | | source: gpsd.berlios.de

tags: GPS

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Where's the Latency? Performance analysis of GPSes and GPSD

published 967 days, 9 minutes ago posted by

http://jonnyboats.wordpress.com/ 1048 days, 18 hours, 16 minutes ago

Where's the Latency? Performance analysis of GPSes and GPSD Eric Steven Raymond Abstract Many GPS manufacturers tout binary protocols more dense than NMEA and baud rates higher than the NMEA-standard 4800 bps as ways to increase GPS performance. While working on gpsd, I became interested in evaluating these claims, which have some implications for the design of gpsd. This paper discusses the theory and the results of profiling the code, and reaches some conclusions about system tuning and latency ... (more)

category: News | clicked: 2 | comment | | source: gpsd.berlios.de

tags: GPS

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Towards a Better GPS Protocol

published 1047 days, 23 hours, 51 minutes ago posted by

http://jonnyboats.wordpress.com/ 1048 days, 18 hours, 25 minutes ago

Towards a Better GPS ProtocolEricStevenRaymond What's Wrong with NMEA 0183, and Why Fix It? The protocol used by GPS devices to report to computers is a small subset of NMEA 0183. NMEA stands for "National Marine Electronics Association", and the features GPSes use for reporting time/position/velocity information are a small part of a protocol originally designed for communication between parts of complex marine navigation systems. Thus the full protocol includes support for depth sounders, LORAN, an... (more)

category: News | clicked: 0 | comment | | source: gpsd.berlios.de

tags: GPS

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These pages are currently under construction

published 1047 days, 23 hours, 51 minutes ago posted by

http://jonnyboats.wordpress.com/ 1048 days, 18 hours, 33 minutes ago

These pages are currently under construction

David L. Wilson's GPS Accuracy Web Page e-mail: dlwilson@erols.com Pages linked below present mathematical modeling and measured data pertaining to GPS accuracy. Short visits to a survey marker or short GPS observations will not provide a useful appraisal of GPS accuracy. The author continuously collects and analyzes data from a precisely surveyed (independently by a licensed surveyor and the author) point near 38 degrees latitude. Position accuracy will vary with GPS receiver configuration (... (more)

category: News | clicked: 0 | comment | | source: users.erols.com

tags: GPS

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GPS Hackery

published 987 days, 2 hours, 23 minutes ago posted by

http://jonnyboats.wordpress.com/ 1048 days, 18 hours, 37 minutes ago

GPS HackeryHardwareUpdatesToolsOther ToolsLinksFurther ReadingOther stuffGPS Observatory I've been interested in GPS for ages (the February 1996 issue of Scientific American didn't do anything to convince me that GPS was boring), but it's only recently that I fired up my text editors and started to write some stuff. I'm interested in a few applications of GPS: precise time transfer, mapping, autonomous navigation and positioning. The mapping angle is obvious. Toss my laptop in my backpack with ... (more)

category: News | clicked: 1 | comment | | source: www.ualberta.ca

tags: GPS

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Circuit Cellar - Digital Library - 109 Cyliax

published 1047 days, 23 hours, 51 minutes ago posted by

http://jonnyboats.wordpress.com/ 1048 days, 18 hours, 39 minutes ago

Circuit Cellar - Digital Library - 109 Cyliax

Whether you’re dispatching emergency personnel or just trying to find your way home, affordable and easy-to-access technology is making GPS applications more popular. Ingo sets the course for future projects right here. Recently, a friend of mine was describing how the local police station was upgrading their communication system. With the new system, each police cruiser has a GPS receiver that locates the cruiser and periodically sends its location and ID to the dispatcher. A computer then processes ... (more)

category: News | clicked: 0 | comment | | source: www.circuitcellar.com

tags: GPS

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List of NMEA 0183 sentences with field descriptions

published 982 days, 1 hour, 40 minutes ago posted by

http://jonnyboats.wordpress.com/ 1048 days, 18 hours, 46 minutes ago

This is a list of NMEA 0183 sentences with field descriptions. It is primarily intended to help people understand GPS reports. This list may originally have been redacted from the document cited as [NMEA2000]; see the list of sources at the end of this document. The official NMEA standard was not consulted at any point, thus this document is not a derivative work of that standard and is not controlled by the rapacious lawyers of NMEA. It is originally from the gpsdrive distribution, but adds m... (more)

category: News | clicked: 2 | comment | | source: gpsd.berlios.de

tags: GPS

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ESR's Guide to Hacking With GPS

published 987 days, 2 hours, 23 minutes ago posted by

http://jonnyboats.wordpress.com/ 1048 days, 18 hours, 50 minutes ago

This is a gentle introduction to writing GPS-aware applications — or, How I Stopped Worrying And Learned To Love Spherical Trigonometry. It will explain the capabilities and limitations of GPS hardware and the gpsd software that you need to know about when writing location-aware applications. We'll go from general to specific, beginning with an overview of how GPS works and ending with architectural suggestions about how to use gpsd to make your application location-aware. How GPS Works First, the... (more)

category: News | clicked: 1 | comment | | source: gpsd.berlios.de

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gpsfeed+

published 1047 days, 23 hours, 51 minutes ago posted by

http://jonnyboats.wordpress.com/ 1048 days, 18 hours, 54 minutes ago

Testing GPS applications requires a gps receiver and an antenna in a position to receive the satellite signals. This, however, is rarely the case when doing software testing at a computer's keyboard. This is where gpsfeed+ can be of help. The application Download gpsfeed+gpsfeed+ is a utility that feeds the PC with continuous GPS data as if a GPS were moving in a car or airplane. NMEA 0183 GPS sentences are sent to the application through a socket (TCP/IP) connection or a UDP multicast message. It ... (more)

category: News | clicked: 0 | comment | | source: users.hol.gr

tags: GPS, open source

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GPSd — Put your GPS on the net!

published 1047 days, 23 hours, 51 minutes ago posted by

admin 1048 days, 19 hours, 4 minutes ago

About gpsd gpsd is a service daemon that monitors one or more GPSes attached to a host computer through serial or USB ports, making all data on the location/course/velocity of the sensors available to be queried on TCP port 2947 of the host computer. With gpsd, multiple GPS client applications (such as navigational and wardriving software) can share access to GPSes without contention or loss of data. Also, gpsd responds to queries with a format that is substantially easier to parse than the NMEA 0183 em... (more)

category: News | clicked: 0 | comment | | source: gpsd.berlios.de

tags: GPS, open source

Welcome!

GPS

CodeProject: Writing GIS and Mapping Software for .NET. Free source code and programming help

CodeProject: Writing Your Own GPS Applications: Part 2. Free source code and programming help

CodeProject: Writing Your Own GPS Applications: Part I. Free source code and programming help

Garmin Hacking Project

DGPS corrections over the Internet

Obtaining raw data from some Garmin GPS units

.NET GPS Vehicle Controller - Home

Notes on Writing a GPSD Driver

Where's the Latency? Performance analysis of GPSes and GPSD

Towards a Better GPS Protocol

These pages are currently under construction

GPS Hackery

Circuit Cellar - Digital Library - 109 Cyliax

List of NMEA 0183 sentences with field descriptions

ESR's Guide to Hacking With GPS

gpsfeed+

GPSd — Put your GPS on the net!

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