| Office_of_Headquarters_Operations_(Code_C) This Headquarters functional office serves as the single focus on matters pertaining to the planning, execution, and evaluation of Headquarters institutional management activities. |
| Office_of_SpaceFlight_Space_Hotlist Directory of general space-related links published by NASA. |
| ORNL_Distributed_Active_Archive_Center_(DAAC)_for_Biogeochemical_Dynamics Offers Earth science data for global change research and Earth systems studies. Sponsored by NASA, the archive includes field data, remote-sensing data, imagery, and the results of ecosystems modelin |
| ORPHEUS_World_Wide_Web_server This server is for distributing information about the ESA/NASA Solar and Heliospheric Observatory (SOHO), and about the Coronal Diagnostics Spectrometer (CDS) instrument aboard that spacecraft. It is |
| Personal_Air_Vehicles a $250,000 annual flight competition for small aircraft.Personal Air Vehicles (PAVs) are small but highly capable aircraft with 2-6 seats that are suitable for on-demand travel on trips of up to 800 m |
| Science_Mission_Directorate Provides overview of strategies and vision of NASA's space science programmes. Includes science community outreach. |
| Solar_Data_Analysis_Center Solar images, solar news, eclipse information, solar data, NASA solar physics programs. |
| Solar_System_Exploration Part of NASA's Office of Space Science that describes NASA's program to explore the solar system. |
| Space_Science Links to images and current news stories. Overview of scientific missions. |
| Space_Telescope_Science_Institute Responsibility for conducting and coordinating the science operations of the Hubble Space Telescope rests with the Space Telescope Science Institute (STScI) on the Johns Hopkins University Homewood Ca |
| Spacecraft_Technology_Center_at_Texas_A&M_University STC promotes commercially funded engineering research and technology development using the International Space Station (ISS) or other orbiting platforms as a test bed for developing and validating adv |
| Spaceline A free internet based bibliographic database referencing citations to publications on space life sciences research. A joint project of NASA and the US National Library of Medicine. |
| Spitzer_Space_Telescope The largest infrared telescope ever launched into space and the final mission in NASA's Great Observatories Program. |
| Technical_Standards_Program Features overview and repository of space standards. Access to the standards requires registration. |
| Australian_Global_Positioning_Systems_Society A free membership society to bring together the delegates, sponsors, and exhibitors for the Satellite Navigation Conference and to foster, develop, and assist the Global Positioning System disciplines |
| Cetus_GPS Navigation, tracking and field data collection software for PalmOS handhelds. |
| Chartracer_Software Cartographic Software is for making moving maps on which GPS data from a serial port are plotted. Data are tracked remotely via CDPD modems and internet sites. |
| David_L__Wilson\'s_GPS_Accuracy_Web_Page Global Positioning System Accuracy |
| GENESIS Suite of data services that brings together the new Earth science products to be produced by spaceborne Global Positioning System (GPS) receivers. It serves mainly as a database for GPS occultation ob |
| GIS_Services Specializes in ArcView GIS training and provides commodities, services and training for implementing and integrating solutions with GIS, GPS, AVL, internet mapping and satellite imagery. |
| The_Global_Positioning_System__The_History_of_GPS The history and 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 f |
| GPS_ActiveX Download information into a Visual Basic application or web page. Garmin, Magellan, Navman or any NMEA 0183 enabled GPS supported. UTM, SPCS, British National Grid, and most other national coordinate |
| GPS_by_Globespotter GPS education, news, hardware, software, and links. Digital mapping. |
| 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_Control_Base_Station_on_Internet GPS Base Stations located in New Zealand, Australia, and New Guinea. Download GPS data files for $40-$70 per day. |
| GPS_Deformation_Monitoring Objective is the development of a system for rapid and inexpensive monitoring of unstable slopes, such as pit walls, earth\rock slopes and dam walls using global satellite positioning technology. |
| GPS_Discounts_for_Educators GPS special pricing for Trimble GeoExplorer 3 and ProXR/XRS educator kits. GPS education and training courses. Tutorials to learn about the GPS system. GPS consulting and course development. |
| GPS_Information Mehaffey, Yeazel and DePriest's site provides dozens of reviews and technical articles on GPS receivers and software, and a huge list of links. |
| GPS_Kwajalein GPS Ground Station on Kwajalein Island, photographs of the island and site. Links to others GPS sites. |
| 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 |
| GPS_Site_from_Univ_of_Texas Global positioning system overview and bibliography. |
| GPS_Status_Information_from_US_Naval_Observatory Via ftp. |
| The_GPS_Waypoint_Base Non-commercial project allowing the collection or submission of GPS waypoints. |
| 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 sign |
| Internet-based_Global_Differential_GPS C-language software package for GPS-based real-time positioning and orbit determination. Includes system overview, technical papers, and a live demo . |
| The_National_GPS_Network Resource from the UK Government intended for GPS-equipped surveyors, and Geographic Information Systems (GIS) developers who work with Ordnance Survey (OS) mapping. Includes the Passive Station Databa |
| Outdoor_Gear_Reviews GPS receiver comparisons. |
| RLA_GeoSystems Source for GPS information and training. Trimble ProXRS and GeoExplorer3 receivers, top 10 websites, GPS for educators and free help. |
| Satellite_Navigation_and_Positioning_Group_(SNAP) SNAP is Australia's largest academic GPS research group specialising in high precision GPS technology and applications. |
| Septentrio_Satellite_Navigation Dual frequency GPS & GLONASS, as well as EGNOS, WAAS and MSAT based on an in-house single baseband processor. |
Advanced Technology &Mission Studies Division
with any comments, criticisms or corrections for this page.
Maintained by: Dave Lavery
Last updated: March 02, 1998
