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Technology Experiment Satellite


Designation 26957 / 01049A
Launch date 22 Oct 2001
Country of origin India
Mission Remote sensing
Perigee/Apogee 579 km sun-synchronous
Inclination 97.8°
Period 96 min
Launch vehicle PSLV #6

Contains a new remote sensing payload with a resolution of 1 m. It is considered as the prototype of the Indian spy satellite.

External resources

sat-index articles

Technical data


Prime contractor ISRO
Platform IRS P
Mass at launch 1108 kg
Mass in orbit  
Stabilization 3-axis
DC power  
Design lifetime  

According to some reports, TES will carry a steerable antenna (possibly with nulling capability that would prevent eavesdropping on communications), a solid-state recorder, a step-and-stare mode camera (which keeps focussing at one scene while the satellite is in motion), two-mirror optics (for compactness), and high-bit rate data transmission.

downlink: 2203.2 MHz

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