Effect of nonuniform target motion on radar backscattered waveforms

Author

Gray, J.E. ; Addison, S.R.

Author_Institution

Syst. Res. & Technol. Dept., Naval Surface Warfare Center, Dahlgren, VA, USA

Volume

150

Issue

4

fYear

2003

Abstract

The effect of nonuniform motion on radar waveforms is discussed. By considering the physical model of a perfectly reflecting mirror with an arbitrary law of motion r(t), it is possible to determine the functional form of the scattered wave at the receiver for any waveform in general. The particular example of an interrupted continuous wave waveform is used to analyse the effect of nonuniform motion on the return spectrum. These models provide a theoretical foundation for the observations of micro-Doppler that have been discussed by a number of authors. Finally, some of the implications, both physical and mathematical, of nonuniform motion for time-frequency methods are addressed

Keywords

Doppler effect <nonuniform target motion, radar backscattered waveforms, effect>; backscatter <nonuniform target motion, radar backscattered waveforms, effect>; electromagnetic wave scattering <nonuniform target motion, radar backscattered waveforms, effect>; radar signal processing <nonuniform target motion, radar backscattered waveforms, effect>; time-frequency analysis <nonuniform target motion, radar backscattered waveforms, effect>; wavelet transforms <nonuniform target motion, radar backscattered waveforms, effect>; Doppler effect; continuous wave waveform; micro-Doppler; nonuniform target motion; perfectly reflecting mirror; physical wavelets; radar backscattered waveforms; receiver; return spectrum; scattered wave; time-frequency methods;

fLanguage

English

Journal_Title

Radar, Sonar and Navigation, IEE Proceedings -

Publisher

iet

ISSN

1350-2395

Type

jour

DOI

10.1049/ip-rsn:20030637

Filename

1241439