Question

Spectral sensitivity of a detector refers to:

• A. Temporal resolution
• B. Wavelength response range
• C. Radiometric resolution
• D. Spatial resolution

Hint:

Remember the four resolutions: \[ \boxed{ \begin{aligned} \text{Spatial} &\rightarrow \text{Object size} \text{Spectral} &\rightarrow \text{Wavelength bands} \text{Radiometric} &\rightarrow \text{Energy sensitivity} \text{Temporal} &\rightarrow \text{Revisit time} \end{aligned} } \]

Answer 1

The Correct Option is C

Concept: Spectral sensitivity describes how effectively a detector responds to electromagnetic radiation within its operating wavelength range. A detector with greater sensitivity can distinguish smaller differences in incoming energy, which is reflected in its radiometric resolution.

Step 1: Understand detector sensitivity. A highly sensitive detector can detect very small differences in radiance.

Step 2: Relate it to detector performance. This capability is represented by \[ \boxed{\text{Radiometric Resolution}.} \] Hence, the correct option is \[ \boxed{(C)\;\text{Radiometric resolution}.} \]