// ORBITAL LOGISTICS AND PROPULSION TERM
Polar Orbit
An orbit that passes over or very near the Earth's geographic poles on each revolution.
TECHNICAL DEFINITION
A polar orbit is a type of Earth orbit where a satellite passes over or very close to both the North and South Poles on each revolution, providing global coverage and enabling remote sensing, weather monitoring, and reconnaissance missions.
BACKGROUND
China has one of the most active space programs in the world. With launch vehicles of the Long March rocket family and four spaceports, China conducts the most or second most orbital launches each year. China's fleet of over 1,300 Earth orbit satellites serves communication, navigation, reconnaissance and scientific research. China Manned Space Program operates Tiangong, one of two active space stations alongside the International Space Station (ISS). China National Space Administration (CNSA) has achieved robotic rover, lander, and orbiter missions to the Moon and Mars.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Polar-crossing orbit
- high-inclination orbit
USAGE NOTE
Weather satellites frequently use polar orbits to achieve comprehensive global atmospheric data collection.
DEVELOPERS
Organizations developing technology related to Polar Orbit.
A private aerospace manufacturer and space transportation services company that frequently launches satellites, including its own Starlink constellation, into polar and sun-synchronous orbits using its Falcon 9 rockets, particularly from Vandenberg Space Force Base.
An American public Earth imaging company that operates the largest constellation of Earth observation satellites. The majority of their satellites are in sun-synchronous orbits, a specific type of polar orbit, enabling them to image the entire globe daily.
A public American aerospace company with a New Zealand subsidiary, specializing in small satellite launches. Their Electron rocket regularly delivers customer payloads to precise polar orbits for Earth observation, communications, and scientific missions.
A Finnish company that owns and operates the world's largest constellation of Synthetic Aperture Radar (SAR) satellites. Their satellites are in polar orbits, which allows for frequent and reliable monitoring of any location on Earth, regardless of weather conditions or time of day.
The United States' civil space agency, which operates numerous scientific satellites in polar orbit for Earth science. Missions like the Landsat series and the Joint Polar Satellite System (JPSS) provide critical long-term data on climate, weather, and the environment.
An intergovernmental organization of 22 member states dedicated to the exploration of space. ESA's Copernicus Programme, with its Sentinel family of satellites, heavily utilizes polar orbits to provide comprehensive Earth observation data for environmental and security purposes.
A space-to-cloud data and analytics company that operates a large constellation of multipurpose nanosatellites. Many of their satellites are in polar orbits to collect global data on weather, maritime, and aviation activity.
A manufacturer of spacecraft, components, and instruments for national defense, civil space, and commercial space applications. They have built numerous satellites and instruments designed specifically for polar orbit missions, including the spacecraft for the Joint Polar Satellite System (JPSS).