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Indigenous radar to be ready soon
The totally indigenous Rs. 240-crore multi-object tracking radar, which was developed and built by scientists of the Indian Space Research Organisation (ISRO) and some industries of the country, will be ready for operation during the first quarter of 2015.
“The electronics, mechanical structure and radom of the radar are ready and integration of all components will start during the month-end. This is the first totally indigenous multi-object tracking radar,” SHAR-ISRO Associate Director and Project Director of the radar V. Seshagiri Rao said here on Monday.
“The new radar which will operate from Sriharikota range can track nearly 10 objects simultaneously in a distance as far as 1000 km in space, while the conventional radars spot a single object at a time. This is useful in many ways since it can detect 10 objects at a time and in case space debris is approaching an Indian satellite, the path of satellite can be diverted to avoid collision and damage,” Mr. Seshagiri Rao explained about the radar while talking to The Hindu.
“Antenna of a radar would move to track an object but in the case of the new multi-object tracking radar, its 12x6 meter antenna does not move but its electronic beam moves,” he said about the radar.
Multi-Object Tracking Radar (MOTR)ISRO’s future missions will need tracking of multiple objects. For this purpose, a Multi-Object Tracking Radar or MOTR is being realized indigenously, which will contribute to Range safety, Impact point monitoring, recovery and re-entry missions. The MOTR will track different stages of launch vehicles simultaneously during nominal and non-nominal missions. The tracking data will be used for computing the Instantaneous Impact Points (IIPs) of the descending/separated objects of the launch vehicle, more accurately.
The configuration of MOTR is derived based on long range tracking requirement of 50 cm x 50 cm object size at a slant range of 1000 km for objects and 30 cm x 30 cm size at a slant range of 800 km in LEO for space-debris. The MOTR operates in L-band frequency (1.3 to 1.4 GHz) with active phased array antenna, capable of tracking ten objects simultaneously. The radar is designed to have a maximum peak power of 830 kW with 4608 radiating antenna elements.
Further, MOTR will also provide the data related to close approach of space debris to the remote sensing satellites in Low Earth Orbit (LEO) and to plan the collision avoidance manoeuvres of these satellites, thus contributing to the safe operation of ISRO’s Space Assets and Space Situational Awareness.
Source:- Welcome to Indian Space Research Organization-ISRO - Multi-Object Tracking Radar (MOTR)
Source:- Indigenous radar to be ready soon - The Hindu