Question

The first experimental space-borne SAR satellite is named as:

• A. \(\text{JERS-1} \)
• B. \(\text{ERS-1} \)
• C. \(\text{SEASAT-A} \)
• D. \(\text{RADARSAT-1} \)

Hint:

SEASAT-A was the first space-borne SAR satellite, launched by NASA in 1978 to study oceanographic and land observations.

Answer 1

The Correct Option is C

Step 1: Understanding Synthetic Aperture Radar (SAR). SAR is a remote sensing technology that uses radar signals to create high-resolution images of Earth's surface. The first experimental space-borne SAR system was launched to test and develop SAR imaging capabilities.
Step 2: Identifying the first SAR satellite. - SEASAT-A was the first-ever spaceborne SAR satellite, launched by NASA in 1978. - ERS-1 (1991, ESA) and RADARSAT-1 (1995, Canada) were later operational SAR satellites. - JERS-1 (1992, Japan) also carried SAR instruments but was not the first.
Step 3: Selecting the correct option. Since SEASAT-A (1978) was the first experimental SAR satellite, the correct answer is c. SEASAT-A.