DEVELOPMENT OF MANUAL RADAR INTERFERENCE PREDICTION MODEL.
FEDERAL AVIATION AGENCY WASHINGTON D C SYSTEMS RESEARCH AND DEVELOPMENT SERVICE
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The report describes the development and application of a theoretical model developed to manually predict the RF interference that a radar receiver may be subjected to and the effect this interference input might have on the Common Digitizer. The RF portion of the prediction is made in two steps. A rough cull is accomplished utilizing essentially power and distance to eliminate as many equipments as possible from consideration and then more detailed calculations are accomplished on only those emitters which are potential interference sources. A series of curves have been plotted and are furnished so that propagation loss may be determined without laborious calculations. Solved examples are presented as illustration of the application of the model developed. The Common Digitizer portion of the prediction examines the effect of interference from two aspects. First the total amount of interference is examined to determine the effect on the probability of detection. Curves have been plotted showing that as the amount of interference increases the probability of detection decreases. The effect is much more pronounced for targets with small signal-to-noise ratios. The effects of interference whose PRF is nearly equal to or almost harmonically related to the operating rate of the Common Digitizer is examined. Author
- Active and Passive Radar Detection and Equipment