What are typical logarithmic gain values for real world radars?

In the context of radar systems, logarithmic gain values are a measure of how much the radar can amplify the incoming signals, which is crucial for detecting weaker targets. Typical logarithmic gain values for real-world radars often range from 40 to 50 dB. This range indicates a significant amplification of the radar signal, which allows for improved detection capabilities, especially for distant or weak targets.

A gain of 40 to 50 dB is commonly seen in various radar applications, including weather radar, aviation surveillance, and military radars. This gain range strikes a balance between amplifying signals sufficiently to detect targets, while also managing noise levels effectively. Higher gain levels could lead to increased susceptibility to noise and clutter, which can impair target detection.

The options that suggest gains below 40 dB would generally not provide the necessary amplification for effective long-range target detection, while those suggesting gains above 50 dB might indicate systems designed for very specific applications where exceptionally weak signals need to be amplified, which is less common. Therefore, selecting 40 to 50 dB aligns with the operational standards of most radar systems in the real world.