Twenty years ago, the Indian Space Research Organisation (ISRO) launched the countryâ€™s first operational earth-observation satellite, the IRS-1A. In the years since then, ISRO has sent up 10 more remote-sensing satellites. (Six of these satellites are currently operational, including the ageing IRS-1D, which was launched more than 10 years ago with a design life of three years and is reportedly used sparingly these days.)
somehow most of our satellites if not all have exceeded their designed lifetimes..
In 2011-12, Cartosat-3 could go into the orbit. The panchromatic camera on this satellite is expected to provide images with a resolution of 30 cm. Currently, the American WorldView-1 satellite launched in September last year offers the highest resolution imageries that are commercially available and the resolution of those images is 50 cm. WorldView-2, which will be launched next year, will provide images with a resolution of 46 cm.
the pakis and their goats will be fully visible