Best possible resolution that can be achieved by SAR is when length of antenna = X * Azimuth Resolution. What is the value of X? 1/2 1/4 2.0 4.0

Break Down the Problem

1. We need to determine the value of $X$ in the relationship between the length of the antenna and the azimuth resolution in Synthetic Aperture Radar (SAR) systems.

Relevant Concepts

2. In SAR, the best possible resolution can be represented by the equation: $\text{Length of Antenna} = X \times \text{Azimuth Resolution}$ The common knowledge in radar theory suggests that the theoretical maximum or optimal value of $X$ is typically $2$.

Analysis and Detail

3. To analyze, we note that:
   • The azimuth resolution is inversely proportional to the length of the antenna.
   • When the length of the antenna is twice the azimuth resolution, this typically provides the best resolution performance in ideal conditions.

Verify and Summarize

4. The analysis indicates that for optimal conditions in SAR systems, $X$ equals $2$. This is supported by the underlying theoretical framework in radar physics.

Final Answer

The best possible resolution that can be achieved by SAR corresponds to $X = 2.0$.