WOW.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. SPOT Satellite Messenger - Wikipedia

   en.wikipedia.org/wiki/SPOT_Satellite_Messenger

   SPOT Gen3 Satellite Messenger. SPOT is a GPS tracking device that uses the Globalstar satellite network [1] to provide text messaging and GPS tracking (depending on the subscription type purchased). [2] [3] It has a coverage area that includes a large portion of the planet, with the exception of extreme northern and southern latitudes and parts ...

3. Satellite emergency notification device - Wikipedia

   en.wikipedia.org/wiki/Satellite_emergency...

   A Satellite Emergency Notification Device or SEND is a portable emergency notification and locating device which uses commercial satellite systems rather than the COSPAS-SARSAT satellite system. An example of this device is SPOT. The devices use an internal GPS chip to gather location information. When the SEND is triggered, this information is ...

4. GPS signals - Wikipedia

   en.wikipedia.org/wiki/GPS_signals

   GPS signals are broadcast by Global Positioning System satellites to enable satellite navigation. Receivers on or near the Earth's surface can determine location, time, and velocity using this information. The GPS satellite constellation is operated by the 2nd Space Operations Squadron (2SOPS) of Space Delta 8, United States Space Force .

5. Communications satellite - Wikipedia

   en.wikipedia.org/wiki/Communications_satellite

   t. e. A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military ...

6. Transponder (satellite communications) - Wikipedia

   en.wikipedia.org/wiki/Transponder_(satellite...

   A communications satellite 's transponder is the series of interconnected units that form a communications channel between the receiving and the transmitting antennas. [1] It is mainly used in satellite communication to transfer the received signals. A transponder is typically composed of: an input band-limiting device (an input band-pass filter ),

7. 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 2023, five global systems are operational: the United States 's Global Positioning System (GPS), Russia 's Global ...