Modeling of a radar signal for scan pattern

Abstract

As electronic warfare (EW) environment has rapidly changed to be more complex, ambiguity in detecting and identifying enemies' radars also has increased in electronic warfare support (ES) systems. To overcome this critical problem by the limitation of the conventional detection and identification method based on the inter-pulse modulation characteristic such as pulse repetition interval (PRI) and frequency modulation type, a new approach introducing scan patterns of radars has been presented. The conventional researches, however, have mostly dealt with a simple scan pattern type like a circular scan. This is due to the difficulty in gathering various radar signals, even though they are essentially needed to identify lots of radar systems. Therefore it is required a solution which secures the various radar signals to trigger and advance related researches. To satisfy this need, we propose a novel radar-signal model which can generate radar signals including various scan patterns. By analyzing and considering the relationship between a shift of radar boresight by the scan pattern and parameters determining power variation, we establish the proposed model. To make the model more practical, some distortions such as noise, missing pulses, and spurious pulses are added. The validity of radar signals generated from the model is verified by analyzing their results where various radar signals of a typical radar scan pattern type are produced varying with operational parameters.