Question:
Higher spatial resolution is attained in azimuth (along-track) direction for Synthetic Aperture Radar (SAR) data through:
Higher spatial resolution is attained in azimuth (along-track) direction for Synthetic Aperture Radar (SAR) data through:
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SAR stands for
\[
\boxed{\text{Synthetic Aperture Radar}}
\]
It improves azimuth resolution by creating a synthetic antenna using platform motion.
Updated On: Jul 27, 2026
- A physically very large antenna
- Increasing pulse repetition frequency
- Synthesizing a large “virtual” antenna through platform motion
- Reducing wavelength
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The Correct Option is C
Solution and Explanation
Concept:
Synthetic Aperture Radar (SAR) improves azimuth resolution by combining echoes received as the radar platform moves.
This creates the effect of a much larger antenna than the physical antenna.
Step 1: Understand SAR operation. As the aircraft or satellite moves,
• Multiple radar echoes are collected.
• Signal processing combines these echoes.
• A synthetic (virtual) aperture is formed.
Step 2: Identify the correct method. Thus, \[ \boxed{\text{SAR attains high azimuth resolution by synthesizing a large virtual antenna through platform motion}.} \] Therefore, the correct option is \[ \boxed{(C).} \]
Step 1: Understand SAR operation. As the aircraft or satellite moves,
• Multiple radar echoes are collected.
• Signal processing combines these echoes.
• A synthetic (virtual) aperture is formed.
Step 2: Identify the correct method. Thus, \[ \boxed{\text{SAR attains high azimuth resolution by synthesizing a large virtual antenna through platform motion}.} \] Therefore, the correct option is \[ \boxed{(C).} \]
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