The ldquo Synthetic Aperture Radar rdquo Technology is used in 1 RISAT 1 2 RISAT 2 3 CARTOSAT 4 KALP...........

Science and Technology (Easy) Defence

The “Synthetic Aperture Radar” Technology is used in:

1.	RISAT-1	2.	RISAT-2
3.	CARTOSAT	4.	KALPANA

1 and 4

3 and 4

2 and 3

1 and 2

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Explanation:

RISAT (Radar Imaging Satellite) is a series of Indian radar imaging reconnaissance satellites built by ISRO. They provide all-weather surveillance using synthetic aperture radars (SAR). The RISAT series are the first all-weather Earth observation satellites from ISRO. Hence option 4th is correct.