Advanced Tracking Technologies, Inc. - Manufacture a personal GPS vehicle tracking device used to monitor and report a vehicles daily route, mileage and speed driven.
Affordabe GPS Systems - Retail brand-name GPS receivers and accessories.
Ag Electronics Association - Site offers a glossary of terms for precision farming, as well as information on standards development and other activities related to hardware and software for precision agriculture.
All GPS System Source - A one-stop source for GPS information. GPS trainind. Trimble ProXRS and GeoExplorer3 GPS receivers, site includes the top 10 GPS web pages, GPS for educators and and free GPS help.
Anderson Innovative Audiocar - Supply and install vehicle navigation, multimedia, LPG conversions and security.
Bio-Geo-Recon - Remote sensing services for the agriculture, forestry, and environmental communities.
CARIS-Universal Systems Ltd. - GPS field data collection utilities that provide spatial information and GIS solutions for marine and land based industries. Flagship suite of products, CARIS, runs under Microsoft Windows NT/95 and Unix operating systems.
CommSystems Intermountain - Source for global positioning system accessories, software and equipment.
CompassCom, Inc. - A provider of AVL and GIS tools and solutions utilizing GPS, wireless communications, pen computers, aerial photography, and laser range finders.
Corvallis Microtechnology, Inc. - GPS/GIS field equipment, software, and training.
David L. Wilson's GPS Accuracy Web Page - Global Positioning System Accuracy
Differential Corrections, Inc. - Transmits the differential correction signal over existing FM radio station subcarriers where DCI equipment has been installed. The DCI subcarrier signal is received on RDS receivers that are plugged into GPS receivers. (Also supplies GPS units.)
DSNP - European manufacturer of GPS/GNSS equipment for land survey.
DTN EarthScan - Satellite images and analysis of your fields and crops.
Eagle Electronics - Information, product guides, and sources for Eagle GPS, Sonar and Mapping products, as well as GPS and routing software.
Farm-Tech - Provides independent crop consulting and other assistance to progressive crops producers in the midwestern US, including Precision Agronomics, GPS and GIS, and Seed Buying Group. Site has some information on these topics.
FliteVue PC - An 8-channel handheld GPS receiver that runs standard Windows software on its own built-in PC. VGA TFT display, CD-ROM, and floppy, in a package smaller than a lunchbox.
Fugro SeaSTAR - Differential GPS for oceangoing vessels.
Garmin GPS FAQ - Information about Garmin GPS units, links to other Garmin-related sites, and links to other global positioning system information resources.
GARMIN International - Features Garmin GPS products for several applications.
Global Trak Vehicle Tracking and Control System - GPS vehicle tracking system with Internet link to RF systems for individual or fleet applications. Can be accessed from any PC location.
GPS America - Voice interactive vehicle navigation.
GPS Applications Exchange - GPS technology usage world-wide is featured. GPS application stories are accessed by geographic regions. GPS tutorials are available to enhance understanding.
GPS Clocks for Computer Time Synchronization - Learn about how to use GPS for computer time synchronization. We offer a GPSClock (for computer use) that's accurate to a millionth of a second. Ideal for running a stratum one NTP server.
GPS Discounts for Educators - GPS special pricing for Trimble GeoExplorer 3 and ProXR/XRS educator kits. GPS training courses. Tutorials to learn about the GPS system. GPS consulting and course development.
GPS Kwajalein - GPS Ground Station on Kwajalein Island, photographs of the island and site. Links to others GPS sites.
GPS Manufacturers - GPS receiver manufacturers, system integrators, equipment suppliers, and service providers.
GPS Marketplace - GPS Garmin and Magellan navigation systems at discount prices. Handheld receivers, marine chart plotters, fish finders, communication units and accessories with secure order processing.
GPS Novice - Provides basic information for the recreation gps user, including map, compass and coordinate systems
GPS Precise Orbits - Global Positioning System satellite ephemerides ("orbits") information for the general public, from US NOAA. GPS precise orbits are derived using 24 hour data segments from the global GPS network. An informational summary file is provided to document the computation and to convey relevant information about the observed satellites, such as maneuvers or maintenance. Orbits generally are available 2 to 6 days after the observation.
GPS Products - Provider of GPS Products (global positioning system) for commercial, government and special interest groups.
GPS Site from Univ of Texas - Global positioning system overview and bibliography.
GPS Status Information from US Naval Observatory - Via ftp.
GPS Today - GPS news, information, product reviews, and software downloads.
GPS World - Magazine, buyer's guide, solutions database, columns, products and reviews, and employment opportunities.
GPSNow.com - Retail recreational GPS receivers and accessories by Garmin, Magellan and Lowrance with extensive product information and comparisons. Topographic mapping software.
Halltech Atmospheric Systems - Provide Global Positioning Systems (GPS), navigational electronics, and satellite communications systems for those involved in marine, terrestrial and airborne research.
Hyperbolic Positioning Algorithm - An algorithm for obtaining an exact solution for the three dimensional location of a mobile given the locations of four fixed stations (like a GPS satellite or a base station in a cell) and the signal time of arrival (TOA) from the mobile to each station. From Ralph Bucher.
Instrument Sales - GPS receiver sales, rentals, seminars and links.
Introduction to GPS Applications - Introduction to GPS Applications
James Associates - Garmin dealer in Colorado for receivers and accessories, TracPak GPS receiver modules, and MacGPS Pro software for Mac and Garmin.
Jenny's GPS Links
Kuhagen, Inc. - Global Utility Tracking Systems ("GUTS") provides utility, pipeline, locating, and construction companies with global technology in monitoring, patrolling and protecting facilities anywhere in the world.
Land, Air, Sea, Systems - The Smallest Vehicle Tracking and Data Storage Systems Available with close to 100% U.S. coverage.
Leica Geosystems - Services and products for the GIS and GPS industry.
Lowe Electronics - Global Positioning System products including antennas and software. Dealer for Garmin and others. Site has general GPS information and some product reviews.
Lowrance Electronics - Manufacturer of sonar, GPS, and aviation electronics.
Magellan Satellite Access Technology - Manufacturer of in-car GPS navigation systems. Product pictures, descriptions, specifications and FAQ. O.E.M. info and area coverage maps.
Manning NavComp - Developers of RASTRAC software, and integrators of systems for management of mobile assets and vehicle tracking. Product pictures, descriptions and FAQ. Dealer locator.
Mehaffey and Yeazel's GPS Information - Dozens of reviews and technical articles on GPS receivers and software, and a huge list of GPS links.
Mercator, Inc. GPS Rentals and Sales - GPS systems rentals and sales serving users world-wide especially for the survey industry. System pictures, descriptions and pricing.
Navcom - GPS - Offers Garmin GPS satellite navigation equipment and accessories.
NAVICOM Co., LTD. - Providing GPS solution & telecommunication.
Navtech Seminars and GPS Supply - Specializes in GPS related training and educational seminars, books, software, and equipment
Navtrak, Inc. CoPilot GPS System - Manufactures the CoPilot GPS receiver for land, sea, and air navigation.
Nord Atlantic USA - GPS receivers, accessories and software by Garmin International. Worldwide sales and support.
NovAtel Inc. - Manufactures and integrates higher performance GPS systems for surveying, GIS, agriculture, aviation, marine, mining and machine control.
OmniSTAR - Worldwide differential global positioning systems with many widely-spaced base stations for multi-site solutions. Maps and descriptions of service regions, technical info and pricing.
OmniTrack - GPS Design Group offers vehicle tracking and the Spike Strategic Driver Information system for driver performance monitoring.
Outdoor Gear Reviews - GPS receiver comparisons.
Peter Bennett's FTP directory - NMEA-0183 and GPS Information
Porcine Associates - Couplers that allow connection of hand-held or panel-mounted GPS receiver to autopilot. Follow a GPS course or hold a heading.
Precision Agriculture in the High Plains of Texas - Publications and information about Texas Agriculture Experiment Station research on crop spacing, improved irrigation management, use of remote sensing data in controlling irrigation and chemigation, and other precision agriculture applications.
Precision Farming - General information on precision farming and other advanced agricultural technology, plus online Farmnotes, message board, and buyer's guide.
Precision Planting - Offers implements and training for precision farming, including Keeton Seed Firmer planter attachment, the Meter Max calibration system, and training videos.
Purple Open Projects - GPS connectors.
Richmond Systems Limited - CMT brand GPS equipment sales, rentals, and repairs.
Sam Wormley's Global Positioning System (GPS) Resources at ISU
Satellite Navigation and Positioning Group (SNAP) - SNAP is Australia's largest academic GPS research group specialising in high precision GPS technology and applications.
Satloc GPS Guidance and Precision Farming Instrumentation - Satloc DGPS, Guidance and Precision Farming Instruments are featured, both for the air and the ground agricultural market.
Sea-Trak - Overlays GPS data onto your video images from underwater or surveillance cameras for viewing or recording in real-time. Fields displayed include LAT, LON, SOG, COG, GMT Date and Time.
Septentrio Satellite Navigation - Dual frequency GPS & GLONASS, as well as EGNOS, WAAS and MSAT based on an in-house single baseband processor.
SiGem - Offers advanced semiconductor technology knowledge. Our current GPS (Global Positioning System) products include GPS antennas, GPS modules, and GPS design kits.
Silva GPS - Compass manufacturer, presents a unique handheld navigation system, the SILVA GPS Compass XL1000 and the SILVA Navimap.
SPIRIT GPS/GLONASS Technology Licensing - License GPS & GLONASS technologies to GPS vendors.
SPS Technologies - MIRAS GPS Vehicle Tracking - Miras allows tracking of vehicles by PC over the internet. Creates reports, locks or unlock doors, or activates engine kill switch remotely.
Starlink DGPS - Differential GPS equipment for precision agriculture and farming.
Stone Technologies - Global positioning systems, security & fire alarms. Electronic engineering, custom design, development and manufacturing. Authorized dealer for GPS equipment.
Sunninghill Systems - GPS Software for automatic vehicle location and tracking via radio, cellphone or satellite.
The Global Positioning System: The Role of Atomic Clocks - Story of how the Global Positioning System evolved from the development of the world's most accurate timepieces, atomic clocks, by physicists looking into the nature of time. Adapted from an article written by MIT scientist Daniel Kleppner.
The GPS Store - Offers Garmin, Magellan, Lowrance, Philips, Delorme GPS products and more. Expert staff and fast worldwide shipping.
Topografix: 1.6 Million US Waypoints - GPS software and database of 1.6 million waypoints for Garmin and Magellan GPS receivers. Software may be downloaded for free evaluation.
Tracker International - GPS Asset Management - Integrated systems to control mobile assets by providing selective use access, tracking, monitoring, location and recovery of the asset on demand.
Trimble Precision Agriculture
Trimble: The GPS Solution - GPS equipment manufacturer for survey, mapping, marine, aviation, precise positioning, military, vehicle tracking, and precision farming applications.
US Navy, Global Positioning and Navigation Systems Division - GPS system support, including Y2K, GPS epoch boundary, leap year boundary, and almanac week boundary concerns.
USCG Navigation Center - GPS, DGPS, LORAN-C, OMEGA, navigation systems, GPS navigation, DGPS navigation.
Veridian Engineering - Products include Automatic Vehicle Location and mobile data computer systems.
Visual Dispatcher by Apollo Systems - Dispatching and Tracking software that allow a service company to track and manage their mobile service fleet.
Waypoint Wherehouse - Waypoint Wherehouse facilitates the free exchange of mapping data for recreational use.
Western Data Systems - GPS rentals and sales, including used demo units for sale.
What is GPS? - Overview of GPS (Global Positioning System) and numerous related links. From Sky Divers Depot.
Zeli Systems - Manufactures the SATPAK line of carrier-board products that provide GPS packaging solutions for popular computer platforms.