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  2. Automatic identification system - Wikipedia

    en.wikipedia.org/wiki/Automatic_identification...

    The addition of satellite-based Class A and B messages could enable truly global AIS coverage but, because the satellite-based TDMA limitations will never match the reception performance of the terrestrial-based network, satellites will augment rather than replace the terrestrial system.

  3. MarineTraffic - Wikipedia

    en.wikipedia.org/wiki/MarineTraffic

    The basic MarineTraffic service can be used without cost; more advanced functions such as satellite-based tracking are available subject to payment. [3] The site has six million unique visitors on a monthly basis. In April 2015, the service had 600,000 registered users. [4] [5]

  4. Google Earth - Wikipedia

    en.wikipedia.org/wiki/Google_Earth

    Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography , and GIS data onto a 3D globe , allowing users to see cities and landscapes from various angles.

  5. Comparison of web map services - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_web_map_services

    6: map with traffic data (separate transit and bicycle view), satellite with traffic data (3D LiDar for certain places not present in most places), hybrid 9: road, satellite, hybrid, bird's eye, traffic, 3D, London street map, ordnance survey map, venue map 3: road, satellite, traffic

  6. Global Maritime Distress and Safety System - Wikipedia

    en.wikipedia.org/wiki/Global_Maritime_Distress...

    Sea Area A3—An area, excluding sea areas A1 and A2, within the coverage of an RMSS (Recognised Mobile Satellite System). For ships fitted with Inmarsat geostationary satellite, this area lies between about latitude 76 Degrees North and South, but excludes A1 and/or A2 designated areas. Inmarsat guarantees their system will work between 70 ...

  7. Earth's orbit is so crowded that space traffic controllers ...

    www.aol.com/news/earths-orbit-crowded-space...

    Most of those warnings come from one neighborhood of Earth's orbit, around 550 kilometers (340 miles) in altitude, where SpaceX's Starlink satellites live. "It's getting difficult for satellite ...

  8. Satellite navigation - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation

    The formerly Soviet, and now Russian, Global'naya Navigatsionnaya Sputnikovaya Sistema, (GLObal NAvigation Satellite System or GLONASS), is a space-based satellite navigation system that provides a civilian radionavigation-satellite service and is also used by the Russian Aerospace Defence Forces. GLONASS has full global coverage since 1995 and ...

  9. List of Earth observation satellites - Wikipedia

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

    NASA Earth science satellite fleet as of September 2020, planned through 2023. Earth observation satellite missions developed by the ESA as of 2019. Earth observation satellites are Earth-orbiting spacecraft with sensors used to collect imagery and measurements of the surface of the earth. These satellites are used to monitor short-term weather ...