Technology Experiment Satellite

Mission type	Earth Observation Photo-reconnaissance
Operator	NTRO
COSPAR ID	2001-049A
SATCATno.	26957
Website	ISRO: PSLV-C3
Mission duration	Elapsed: 24 years, 1 month and 2 days
Spacecraft properties
Manufacturer	ISRO LPSC
Launch mass	1108 kg
Start of mission
Launch date	22 October 2001, 04:53:00 UTC
Rocket	PSLV-C3
Launch site	SHAR,First Launch Pad
Contractor	ISRO
Orbital parameters
Reference system	Geocentric[1]
Regime	Sun-synchronous
Perigee altitude	551 km
Apogee altitude	579 km
Inclination	97.8°
Period	96.0 minutes
Epoch	22 October 2001
Instruments
Camera

Technology Experiment Satellite (TES) is an Indianremote sensing and photo-reconnaissance satellite.

Technology Experiment Satellite (TES) was launched by thePSLV-C3 rocket from theSatish Dhawan Space Centre atSriharikota on the southeast coast of India at 04:53UT on 22 October 2001. This was the fifth consecutive successful launch of the 294-tonne Polar Satellite Launch Vehicle rocket and the second launch to deploy multiple satellites. The 1,108 kg TES satellite carried a one-meter resolution panchromatic camera and was an experimental satellite designed to demonstrate and validate technologies in orbit that could be used in future satellites of theIndian Space Research Organisation (ISRO). TES was successfully placed in a 572 kmSun-synchronous orbit on 22 October 2001 using PSLV-C3. PSLV-C3 also deployed two additional satellites:PROBA, a Belgian satellite, andBIRD, a German satellite.

The technologies demonstrated in TES areattitude and orbit control system, high torquereaction wheels, new reactioncontrol system with optimisedthrusters and a singlepropellant tank, light weightspacecraft structure, solid state recorder,X-band phased array antenna, improved satellite positioning system, miniaturised TTC and power system and, two-mirror-on-axis camera optics.

TES has a pan chromatic camera forremote sensing. The camera is which is capable of producing images of one metreresolution. One metre resolution means the camera is able to distinguish between two objects which are separated at least a metre.

The launch of TES made India the second country in the world after the United States that can commercially offer images with one metre resolution.^[2] It is used for remote sensing of civilian areas, mapping industry and geographical information services. TES, helped theUS Army with high-resolution images during the 11 September 2001 counter-terrorism offensive against the Taliban.

• Indian military satellites
• Polar Satellite Launch Vehicle
• List of Indian satellites

• ISRO PSLV C3 pageArchived 25 March 2014 at theWayback Machine

• Earth observation satellites of India
• Spacecraft launched by PSLV rockets
• Spacecraft launched in 2001
• 2001 in India
• Imaging reconnaissance satellites

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