Question

Match the following SAR sensors to their frequency bands:

\[ \begin{array}{|c|l|c|l|} \hline \textbf{Column I} & \textbf{SAR Sensor} & \textbf{Column II} & \textbf{Frequency Band} \\ \hline P & \text{NOVASAR} & 1 & \text{X-BAND} \\ Q & \text{RISAT-1} & 2 & \text{C-BAND} \\ R & \text{TERRASAR} & 3 & \text{L-BAND} \\ S & \text{ALOS PALSAR} & 4 & \text{S-BAND} \\ \hline \end{array} \]

• A. P–3, Q–2, R–4, S–1
• B. P–4, Q–2, R–1, S–3
• C. P–2, Q–4, R–1, S–3
• D. P–1, Q–4, R–3, S–2

Hint:

Remember SAR satellite sensors by their frequency bands: ALOS PALSAR (L-band), RISAT-1 (C-band), TerraSAR (X-band), and NOVASAR (S-band). Matching sensors to bands helps in understanding their application in remote sensing.

Answer 1

The Correct Option is B

NOVASAR uses the S-BAND \( \Rightarrow \) P–4
RISAT-1 operates in the C-BAND \( \Rightarrow \) Q–2
TERRASAR operates in the X-BAND \( \Rightarrow \) R–1
ALOS PALSAR operates in the L-BAND \( \Rightarrow \) S–3

So, the correct mapping is:
P–4, Q–2, R–1, S–3