Geosynchronous satellites are usually located at an altitude of approximately 36,000 kilometers. But polar satellites are usually located at an altitude of about 850 kilometers, so they circle the earth every 100 minutes.
The first polar satellite was launched by the National Aeronautics and Space Administration [NASA] on February 24, 1996. This is the second satellite launched under the Global Earth Science Project. The TIDE / PSI survey is an important feature of polar satellites.
The main purpose of polar satellites is to collect information about radiation and other atmospheric hazards. When satellites fly in the upper atmosphere, satellite instruments are likely to be damaged by harmful radiation from the sun.
Polar satellites use visible and infrared [IR] radiation to measure temperature and humidity in the Earth's atmosphere. Polar satellites also help to record groundwater and seawater temperatures and monitor cloud and water/ice boundaries. Polar satellites are capable of receiving, measuring, processing and retransmitting data on balloons, buoys and remote automation stations distributed around the globe. These satellites can also carry search and rescue transponders to help locate the plane or vessel that was shot down in distress.
Polar satellites conduct Antarctic ozone level measurements and long-term environmental measurements to support global climate change research. Polar satellites are also known as low earth orbits [LEOs]. Polar satellites can view only two poles or limited areas on Earth at the same time. A special polar orbit that crosses the equator and each latitude at the same time every day is called a sun-synchronous orbit satellite.
Orignal From: Polar satellite
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