SNR in radar, or signal-to-noise ratio, refers to the ratio of the power of a signal of interest to the power of the background noise present in a radar system. This is a critical parameter that indicates the strength or clarity of the radar signal relative to the level of noise interference.
In radar applications, a higher SNR indicates that the radar system can detect and distinguish desired signals (such as target echoes) amidst background noise, thereby improving detection and tracking capabilities.
Signal-to-noise ratio (SNR) is a measurement used in various fields, including telecommunications, electronics, and radar, to quantify the ratio of desired signal power to the power of background noise or interference. A higher SNR indicates that the signal is stronger relative to the noise, resulting in clearer and more reliable signal reception or detection.
SNR is usually expressed in decibels (dB), with higher DB values indicating a higher ratio of signal power to noise and therefore better signal quality.
In radar systems, a good SNR value depends on the specific application requirements and environmental conditions. Generally, a higher SNR is preferred because it allows for more accurate and reliable detection of targets or signals of interest compared to background noise.
A good SNR value ensures that the radar system can effectively distinguish between real targets and noise, enabling accurate measurement of target characteristics such as range, speed and size. In practice, SNR values above 10 dB are considered acceptable for many radar applications, while values above 20 dB are often desired for high-performance radar systems operating in harsh or noisy environments
