CARTOSAT-1
| Mission type | Cartography |
|---|---|
| Operator | ISRO |
| COSPAR ID | 2005-017A |
| SATCAT no. | 28649 |
| Mission duration | 5 years |
| Spacecraft properties | |
| Manufacturer | ISRO |
| Launch mass | 1,560.0 kilograms (3,439.2 lb) |
| Power | 46 watts |
| Start of mission | |
| Launch date | May 5, 2005, 04:45 UTC |
| Rocket | PSLV |
| Launch site | Satish Dhawan SLP |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Sun-synchronous |
| Perigee | 624 kilometres (388 mi) |
| Apogee | 626 kilometres (389 mi) |
| Inclination | 97.81 degrees |
| Period | 97.07 minutes |
| Epoch | 25 January 2015, 02:39:56 UTC |
 PSLV-C6, HAMSAT & IRS-P5 combined insignia |
|
Cartosat-1 or IRS-P5 is a stereoscopic Earth observation satellite in a sun-synchronous orbit, and the first one of the Cartosat series of satellites. The satellite was built, launched and maintained by the Indian Space Research Organisation. Weighing around 1560 kg at launch, its applications will mainly be towards cartography in India. It was launched by PSLV-C6, on 5 May 2005 from the newly built Second Launch Pad at Sriharikota. Images from the satellite will be available from GeoEye for worldwide distribution. The satellite covers the entire globe in 1867 orbits on a 126-day cycle. Adjacent paths are covered with a separation of eleven days.
Cartosat-1 carries two state-of-the-art panchromatic (PAN) cameras that take black and white stereoscopic pictures of the earth in the visible region of the electromagnetic spectrum. The swath covered by these high resolution PAN cameras is 30 km and their spatial resolution is 2.5 metres.
Department of Space (DOS),Government of India has launched a series of satellites for Earth’s resource management and monitoring. These satellites have been very successful in providing data in various scales ranging from 1:1 Million to 1:12,500 scale. Each of the Indian Remote Sensing satellite missions ensured data continuity while introducing improvements in the spatial, spectral and radiometric resolutions. Considering increase demand for large scale and topographic mapping data DOS launched the Cartosat-1 in 2005. Cartosat-1 is dedicated to stereo viewing for large scale mapping and terrain modelling.
The Cartosat-1 satellite has two panchromatic cameras with 2.5 m spatial resolution, to acquire two images simultaneously, one forward looking (FORE) at +26 degrees and one aft of the satellite at -5 degrees for near instantaneous stereo data. The time difference between the acquisitions of the same scene by the two cameras is about 52 seconds. The spacecraft body is steerable to compensate the earth rotation effect and to force both fore and aft cameras to look at the same ground strip when operated in stereo mode. The cameras are mounted on the satellite in such a way that near simultaneous imaging of the same area from two different angles is possible. This facilitates the generation of accurate three-dimensional maps. The cameras are steerable across the direction of the satellite's movement to facilitate the imaging of an area more frequently.
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