Types of Remote Sensing:
Passive instruments only perceive radiation that is detected by natural energy.
Active instruments come with their own sources of EM energy and therefore are able to give light to the object of focus.
A satellite is a moon, planet or machine that orbits a planet or star. There are many types of satellites that are used to provide data for forecasting. Meteorologists use visible satellite images, infrared satellite images, and water vapor satellite images the most.
Satellites are designed in a complex manner but they all share an antenna and a power source. To collect data to forecast the weather, meteorologists would mainly focus on the two main types of satellites: GOES and POES.
- GOES stands for Geostationary Operational Environmental Satellite and they orbit the earth above its equator at an altitude about 36,000 km high.
-POES orbit at a lower altitude of about 850 km high and take an estimate of 100 minutes to travel from pole to pole.
Satellites are proven to save lives. COSPAS-SARSAT has been acknowledged for rescuing more than 27,000 lives