Technology Experiment Satellite (TES)
|TES is the first very high resolution satellite (less than 1m) built and launched by ISRO. It is an experimental satellite to demonstrate and validate more than eleven new technologies namely, Attitude and Orbit Control System (AOCS) for step and Stare imaging in the desired direction; Two mirror on-axis optics for payload providing less than 1m Nadir resolution at an altitude of 560 kms; X-band Phased array antenna with two beam generation capability for payload data transmission; High torque reaction wheels; Improved satellite positioning system, etc.
The major objectives of TES are to design and develop a technology experimental satellite incorporating a set of critical technologies for on-orbit demonstration and validation for future mission and also to provide hands on experience in complex mission operations like step and stare maneuvers, etc.
|Mission||Experimental Remote Sensing|
|Orbit||560 km Polar Sun-Synchronous|
|Lift-off Mass||1108 kg|
|Local Time of Equator crossing||10:30 P.M.|
|Repetitivity||1 to 5 days|
|Payloads||PAN: 1m, 13 km swath, 7 bit radiometry, 0.5 – 0.85 µm|
|Attitude and Orbit Control||3-axis body stabilized with 4 reaction wheels and magnetic torquers|
|Power||Solar Array generating 800 W backed by 2 Ni-Cd batteries of 21 AH capacities each|
|Launch date||October 22, 2001|
|Launch site||SHAR Centre, Sriharikota, India|
|Launch vehicle||PSLV – C3|