A list of the sensors that have been used in Indian Remote Sensing satelites Follows.

Satellite Microwave Radiometer (SAMIR)

SAMIR was the payload for BHASKAR I and II satellites launched in 1979 and 1981. They sucessfully provided data on the sea surface temperature, ocean winds, moisture content over the land and sea.
It was a dicke type radiometer with a temperature resolution better than 1 degree kelvin.

Two Band T.V. Payload

The Bhaskara satellites I and II had a two band TV payload for land applications. It gave images of earth from a height of 525 Km. The data were used in meterology, hydrology, and forestry.

Smart Sensor

Rohini Rs-D2, (the sucessor to the failed Rs-D1) was launched on Apr. 1983. It carried a Smart sensor, which was a 2-Band solid-state device. It had the first CCD camera developed in house.

LISS-I, II and III

LISS-I (Linear Imaging self Scanner) was a payload for the IRS-1A satellite. This camera operated in four spectral bands. It operated in a push-broom scanning mode using a CCD array. Each band used 2 CCD's which were staggered in the focal plane. It was again used in IRS-1B. It used 7 bit quantization, and had a swath of 148 Kms. Images of LISS-I were extensively used in forestry, crop acreage, yeild estimation, drought monitoring, flood monitoring etc.

LISS-II was similar to LISS-I, but with higher spatial resolution and smaller swath. it was on payload in three satellites : IRS-1A, IRS-1B, IRS-P2.

LISS-III is onboard two satellites IRS-1C and IRS-1D. This is a multi-spectral camera which operates in four bands. It provides color images. Its images were used widely in the area of agriculture, mapping, crop acreage etc.

The Panchromatic Camera

This was carried by IRS-1c and IRS-1D satellites. Pan camera enables the acquisition of images at the resolution of 5.8m, which was the highest resolution offered by a civilian satellite until recently, when American satellite Ikonos with a resolution of 1m surpassed it. The Pan camera uses CCD's to capture images.

Wide Field Sensor

IRS-1C, IRS-1D, IRS-P3, which are all second generation Indian remote sensing satellites,carried the WIFS sensor. The WIFS camera uses an 8 element refractive optics like in LISS-III. Two such cameras are mounted with overlapping pixels of imaging. WIFS data was used in assesment of rabi cropped area, crop inventory, observation of crop phenology etc.

Ocean Color Monitor

IRS-P4, also called Oceansat, carried the ocean color monitor, launched on board PSLV-C1. This payload is meant for oceanographic applications. The OCM is a solid state camera operating in the push-broom scanning mode, using linear array CCD'S as detectors for generating ocean biological parameters.

Very High Resolution RadioMeter

All the INSAT-1 and the INSAT-2, INSAT-3 series communications satellites carry the VHRR to provide various remote sensing applications. Since INSAT satellites are geostationary, VHRR provides round the clock metereological earth observations, disaster warning signals.

So that was about the satellites. Now onto the vehicles that put satellites into their orbits that is, Rockets.