Radio interference generated in a helicopter-borne pulse Doppler radar system due to rotating blades is analyzed for the case that blades are located in the far field region of the radar antenna. A first-order estimate of the blade interference power spectrum is obtained as a function of antenna depression angle and radar (helicopter) altitude and speed. Numerical calculations show that blade interference is very weak compared with the direct ground clutter. It extends, however, into the clutter-free region which causes false alarms and degrades the radar performance.


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    Title :

    Radio Interference in Helicopter-Borne Pulse Doppler Radars


    Contributors:

    Published in:

    Publication date :

    1978-03-01


    Size :

    1627528 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English