The ambiguity function of the stepped frequency radar
Gill, Gurnam Singh
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High range resolution radar sytems have many advantages such as target classification, resolution of multiple target, accurate range profile and detection of low radar cross section (RCS) targets in clutter. High range resolution requires large bandwidths. Stepped frequency waveforms can achieve high range resolution by increasing the effective bandwidth without increasing the instantaneous bandwidth which would increase the hardware requirements including higher analog to digital (A/D) sampling rates which are limited by existing technology. Under today's hardware limitations, the stepped frequency waveform becomes very important. This thesis briefly discusses the stepped frequency radar and associated signal processing, it investigates the ambiguity function of the stepped frequency waveform and the stepped frequency radar system. Mathematical expressions of ambiguity functions are derived and the improvement of clutter suppression capability for the stepped frequency radar by rejecting initial pulses is also discussed.
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Ma, Yu-Bin (Monterey, California. Naval Postgraduate School, 1995-12);As compared to the commonly used constant frequency radar waveforms, the stepped-frequency waveform can achieve high range resolution while still retaining the advantages of lower instantaneous receiver bandwidth and lower ...
Mun, Kok Leong (Monterey, California. Naval Postgraduate School, 2000-03);In this thesis, a technique involving Stepped Frequency and Inverse Synthetic Aperture Radar (ISAR) processing have been employed to develop two- dimensional radar images of an aircraft target. Radar returns from prominent ...
Ceylan, Oktay. (Monterey, California: Naval Postgraduate School, 1999-12);Present Compressive Receiver implementations are limited due to their analog implementation and the necessity for digital processing of the serial output data. Previous research has shown that a stepped-frequency digital ...