• Thumbnail for Satellite Data System
    The Satellite Data System (SDS) is a system of United States military communications satellites. At least three generations have been used: SDS-1 from...
    12 KB (527 words) - 14:10, 4 June 2025
  • Thumbnail for Tracking and Data Relay Satellite System
    and Data Relay Satellite System (TDRSS, pronounced "T-driss") is a network of American communications satellites (each called a tracking and data relay...
    19 KB (2,575 words) - 07:32, 5 April 2025
  • Thumbnail for Tracking and data relay satellite
    tracking and data relay satellite (TDRS) is a type of communications satellite that forms part of the Tracking and Data Relay Satellite System (TDRSS) used...
    14 KB (1,402 words) - 02:42, 10 June 2025
  • Thumbnail for Global Positioning System
    The Global Positioning System (GPS) is a satellite-based hyperbolic navigation system owned by the United States Space Force and operated by Mission Delta...
    184 KB (19,110 words) - 17:35, 15 June 2025
  • Thumbnail for Communications satellite
    and others in the Argos system) or in dedicated satellites (such as SCD). The data rate is typically much lower than in satellite Internet access. Commercialization...
    50 KB (5,997 words) - 02:56, 9 May 2025
  • Thumbnail for Satellite navigation
    A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global...
    45 KB (4,560 words) - 11:19, 28 May 2025
  • Thumbnail for Argos (satellite system)
    Argos is a global satellite-based system that collects, processes, and disseminates (spreads, distributes) environmental data from fixed and mobile platforms...
    11 KB (1,126 words) - 09:05, 4 June 2025
  • constellation, a system of 80 satellites: 66 are active satellites and the remaining fourteen function as in-orbit spares. Iridium Satellites are used for...
    43 KB (3,960 words) - 10:50, 27 May 2025
  • Thumbnail for Quasi-Zenith Satellite System
    Quasi-Zenith Satellite System (QZSS) (Japanese: 準天頂衛星システム, Hepburn: juntenchō eisei shisutemu), also known as Michibiki (みちびき, "guidance"), is a four-satellite regional...
    23 KB (1,908 words) - 01:40, 26 February 2025
  • Thumbnail for BeiDou
    Navigation Satellite System (BDS; Chinese: 北斗卫星导航系统; pinyin: běidǒu wèixīng dǎoháng xìtǒng) is a satellite-based radio navigation system owned and operated...
    68 KB (5,866 words) - 01:18, 2 June 2025
  • Thumbnail for Indian Regional Navigation Satellite System
    Indian Regional Navigation Satellite System (IRNSS), with an operational name of NavIC (acronym for Navigation with Indian Constellation; also, nāvik 'sailor'...
    64 KB (5,319 words) - 09:49, 11 June 2025
  • Thumbnail for Galileo (satellite navigation)
    Galileo is a global navigation satellite system (GNSS) created by the European Union through the European Space Agency (ESA) and operated by the European...
    104 KB (10,186 words) - 08:22, 4 June 2025
  • Thumbnail for Joint Polar Satellite System
    The Joint Polar Satellite System (JPSS) is the latest generation of U.S. polar-orbiting, non-geosynchronous, environmental satellites. JPSS will provide...
    21 KB (2,481 words) - 16:23, 6 December 2024
  • Thumbnail for Transit (satellite)
    The Transit system, also known as NAVSAT or NNSS (for Navy Navigation Satellite System), was the first satellite navigation system to be used operationally...
    32 KB (3,712 words) - 08:02, 31 May 2025
  • Thumbnail for Geostationary Operational Environmental Satellite
    Environmental Satellite (GOES), operated by the United States' National Oceanic and Atmospheric Administration (NOAA)'s National Environmental Satellite, Data, and...
    40 KB (4,222 words) - 15:35, 10 June 2025
  • Thumbnail for Rohini Satellite 1
    7th country to have rocket launching capability. The satellite was spin-stabilised and provided data regarding the fourth stage of SLV rocket. Launched...
    5 KB (390 words) - 10:05, 16 June 2025
  • A satellite data unit (SDU) is an avionics device installed in an aircraft that allows air/ground communication via a satellite network. It is an integral...
    3 KB (369 words) - 02:22, 27 August 2024
  • Thumbnail for Satellite phone
    and systems that use satellites in low Earth orbit (LEO), 640 to 1,120 kilometers (400 to 700 miles) above the Earth. The connection and regular data order...
    46 KB (4,881 words) - 10:35, 2 June 2025
  • Thumbnail for DORIS (satellite system)
    DORIS is a French satellite system used for the determination of satellite orbits (e.g. TOPEX/Poseidon) and for positioning. The name is an acronym of...
    4 KB (411 words) - 06:42, 8 August 2023
  • Thumbnail for Satellite imagery
    Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites...
    32 KB (3,731 words) - 03:57, 7 June 2025
  • Thumbnail for Luch (satellite)
    of the US Tracking and Data Relay Satellite System. The first generation of satellites was created by NPO-PM using the satellite platform KAUR-4 (its first...
    15 KB (1,179 words) - 20:33, 24 October 2024
  • Thumbnail for Satellite Internet access
    grade satellite Internet service is typically provided to individual users through geostationary satellites that can offer relatively high data speeds...
    70 KB (8,429 words) - 23:15, 2 June 2025
  • Thumbnail for National Environmental Satellite, Data, and Information Service
    The National Environmental Satellite, Data, and Information Service (NESDIS) was created by the National Oceanic and Atmospheric Administration (NOAA)...
    8 KB (699 words) - 01:45, 16 January 2025
  • Thumbnail for Indian National Satellite System
    The Indian National Satellite System or INSAT, is a series of multipurpose geostationary satellites launched by the Indian Space Research Organisation...
    37 KB (2,953 words) - 12:15, 26 October 2024
  • Thumbnail for Sentient (intelligence analysis system)
    is a classified artificial intelligence (AI)–powered satellite-based intelligence analysis system developed and operated by the National Reconnaissance...
    28 KB (2,064 words) - 16:16, 18 June 2025
  • Indian Data Relay Satellite System or IDRSS is a planned Indian constellation of Inter-satellite communications satellites. It is planned to initially...
    8 KB (625 words) - 07:47, 31 December 2024
  • Thumbnail for KH-11 KENNEN
    then Evolved Enhanced CRYSTAL System, and codenamed 1010: 82  and Key Hole: 82 ) is a type of reconnaissance satellite first launched by the American...
    53 KB (5,184 words) - 10:31, 11 June 2025
  •  'Global Navigation Satellite System') is a Russian satellite navigation system operating as part of a radionavigation-satellite service. It provides...
    72 KB (6,263 words) - 20:30, 17 June 2025
  • Thumbnail for Automatic identification system
    identification system (AIS) is an automatic tracking system that uses transceivers on ships and is used by vessel traffic services (VTS). When satellites are used...
    90 KB (11,133 words) - 15:14, 14 March 2025
  • Thumbnail for World Geodetic System
    The World Geodetic System (WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS. The current version, WGS 84, defines...
    24 KB (2,842 words) - 03:41, 26 April 2025