What is the main purpose of developing ISRO’s MiniSAR (Miniaturized Synthetic Aperture Radar) at X-Band?
To provide high-resolution X-Band radar imagery using compact airborne systems
A Synthetic Aperture Radar (SAR) is an active microwave imaging sensor that sends radar pulses and records the echoes; it can image the Earth's surface by day or night and through clouds, rain and smoke.
ISRO's Space Applications Centre (SAC), Ahmedabad, has developed a miniaturized X-Band SAR that is small and light enough to be flown on small aircraft and drones, giving high-resolution radar images for uses such as disaster management, surveillance, mapping and resource monitoring.
A radar is a sensing payload and cannot replace a rocket stage like the PSLV upper stage; SAR does not measure atmospheric pressure; and it is an imaging system, not a video communication link for crewed missions.
Hence, the main purpose of MiniSAR is to provide high-resolution X-Band radar imagery using compact airborne systems.
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Important Questions from Space and Nuclear Program
With reference to `Astrosat', the astronomical observatory launched by India, which of the following statements is/are correct?
1. Other than USA and Russia, India is the only country to have launched a similar observatory into space.
2. Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above the surface of the Earth.
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Consider the following statements: The Mangalyaan launched by ISRO
1. is also called the Mars Orbiter Mission
2. made India the second country to have a spacecraft orbit the Mars after USA
3. made India the only country to be successful in making its spacecraft orbit the Mars in its very first attempt
Which of the statements given above is/are correct?
Which of the following pair is/are correctly matched?
Select the correct answer using the code given below.
Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:
1) The orbit is geosynchronous.
2) The orbit is circular.
3) The orbit lies in the plane of the Earth's equator.
4) The orbit is at an altitude of 22,236 km
Select the correct answer using the codes given below:
An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth
