JERS-1
Encyclopedia
Japanese Earth Resources Satellite 1 (JERS-1) was a satellite
launched in 1992 by the Japan Aerospace Exploration Agency
(at that time also known as "NASDA", now "JAXA"). It carried three instruments:
The satellite operated until 1998 and re-entered the Earth's atmosphere in 2001.
Satellite
In the context of spaceflight, a satellite is an object which has been placed into orbit by human endeavour. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as the Moon....
launched in 1992 by the Japan Aerospace Exploration Agency
Japan Aerospace Exploration Agency
The , or JAXA, is Japan's national aerospace agency. Through the merger of three previously independent organizations, JAXA was formed on October 1, 2003, as an Independent Administrative Institution administered by the Ministry of Education, Culture, Sports, Science and Technology and the...
(at that time also known as "NASDA", now "JAXA"). It carried three instruments:
- An L-bandL bandL band refers to four different bands of the electromagnetic spectrum: 40 to 60 GHz , 1 to 2 GHz , 1565 nm to 1625 nm , and around 3.5 micrometres .-NATO L band:...
(HH polarization) synthetic aperture radarRadarRadar is an object-detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The radar dish or antenna transmits pulses of radio...
(SAR); - A nadirNadirThe nadir is the direction pointing directly below a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface there. Since the concept of being below is itself somewhat vague, scientists define the nadir in more rigorous...
-pointing optical camera (OPS); - A side-looking optical camera (AVNIR).
The satellite operated until 1998 and re-entered the Earth's atmosphere in 2001.