Ambiguity function of bipolar ultrawideband-throb signal

Abstract

Ultrawideband (UWB) waveform diversity (WD) has the potentials for improving the overall radar-system performance in terms of all-weather capability, target resolution, detection of stealthy targets, effective propagation through foliage and lossy media, suppression of interference and jamming, clutter suppression, and non-cooperative target classification and recognition. Analogous to the linear-frequency modulated (LFM) waveform, commonly known as “chirp” signal, a bipolar UWB-throb signal has been designed for the applications of highresolution impulse radar, and through-the-wall imaging radar. In this paper, we present the characteristics of the bipolar UWB-throb signal and derive its ambiguity function, which is an essential design tool for radar performance analysis. A parametric analysis of the ambiguity function is carried out to demonstrate the capabilities of the UWB-throb signal in terms of range and Doppler resolution and clutter suppression.