Radar operating frequency: Careful selection of frequency is necessary during design

　　1. Short wavelength, high resolution, poor penetration, and easy absorption;

　　2. Long wavelength, low resolution, and strong penetrability.

　　Radar functions in different frequency bands

　　Search radar, operating frequency bands (VHF, UHF, L);

　　Search and track radar, operating bands (L, S, C);

　　Fire control and imaging radar, operating bands (C, X, Ku);

　　Missile borne radar, operating frequency band (X Ku、K、Ka、V、U、W)。

　　Radar frequency selection

　　Although radar can operate over a wide frequency range, different frequencies have different operating characteristics and are suitable for different purposes. Therefore, when designing a radar, it is necessary to carefully choose the frequency. The radar frequency has a significant impact on the radar performance, including antenna transmission gain, effective receiving area (at a certain transmission gain), transmission power, receiver noise, propagation loss, meteorological echoes, etc. It largely determines important indicators such as radar type, operating range, accuracy, resolution, anti-interference ability, volume weight, maneuverability, and cost. Therefore, radar frequency is the most important parameter among all radar parameters.

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