A near-field analysis is carried out to obtain the level of modulation interference due to rotating blades in a helicopter-borne pulse Doppler radar system. The interference power spectra are calculated for different values of antenna depression angle and helicopter (radar) speed at a constant helicopter altitude of 300 m. Numerical results for the case of 1 kW radiated power show that blade interference level is about 5 to 8 dBW/Hz less than that of the direct ground clutter in the clutter region. It extends, however, into the clutter-free region which may cause false alarms and degradation of the radar performance.


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    Title :

    Near-Field Analysis of Helicopter Rotating Blades Modulation Interference


    Contributors:


    Publication date :

    1979-01-01


    Size :

    1405451 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English