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2. Global Positioning System - Wikipedia

   en.wikipedia.org/wiki/Global_Positioning_System

   The Global Positioning System ( GPS ), originally Navstar GPS, [ 2] is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force. [ 3] It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near ...

3. List of satellites in geosynchronous orbit - Wikipedia

   en.wikipedia.org/wiki/List_of_satellites_in...

   As of July 2023, the website UCS Satellite Database lists 6,718 known satellites. Of these, 580 are listed in the database as being at GEO. The website provides a spreadsheet containing details of all the satellites, which can be downloaded. Listings are from west to east (decreasing longitude in the Western Hemisphere and increasing longitude ...

4. List of GPS satellites - Wikipedia

   en.wikipedia.org/wiki/List_of_GPS_satellites

   List of GPS satellites. As of 15 August 2023, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 4 are unhealthy or in reserve, 41 are retired, 2 were lost during launch, and 1 prototype was never launched. 4 Block III satellites have completed construction and have been declared "Available For ...

5. Norsat Satellite Locator App Now Available for Android - AOL

   www.aol.com/2012/10/30/norsat-satellite-locator...

   Norsat Satellite Locator App Now Available for Android VANCOUVER, British Columbia--(BUSINESS WIRE)-- Norsat International Inc. ("Norsat" or "the Company") (TSX: NII and OTC BB: NSATF), a leading ...

6. Satellite navigation - Wikipedia

   en.wikipedia.org/wiki/Satellite_navigation

   A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global coverage is termed global navigation satellite system ( GNSS ). As of 2024, four global systems are operational: the United States 's Global Positioning System (GPS), Russia 's Global ...

7. Satellite geolocation - Wikipedia

   en.wikipedia.org/wiki/Satellite_geolocation

   In addition to geolocation with a time LOP and a frequency LOP, a location can also be determined by finding the crossing point of two time LOPs. The second time LOP is an identical measurement using a different secondary satellite, or using the same secondary satellite, but later in time.

8. List of Earth observation satellites - Wikipedia

   en.wikipedia.org/wiki/List_of_Earth_observation...

   NASA, Roscosmos, JAXA, ESA, and CSA. 1998. The International Space Station (ISS) has long been used as a central satellite platform for other sensors, including Earth observation sensors. For example: LIS, SAGE III, TSIS-I, ECOSTRESS, GEDI, OCO-3, Diwata-1, and HICO . Jason-3.

9. Galileo (satellite navigation) - Wikipedia

   en.wikipedia.org/wiki/Galileo_(satellite_navigation)

   The first Galileo test satellite GIOVE-A was launched 28 December 2005, while the first satellite to be part of the operational system was launched on 21 October 2011. Galileo started offering Early Operational Capability (EOC) on 15 December 2016, [ 1] providing initial services with a weak signal. [ 13]