Noise analysis of digitised FMCW radar waveforms

Author

Abousetta, M.M. ; Cooper, D.C.

Author_Institution

Fac. of Electron. Eng., Univ. of Al-Tahadi, Bani-Walid, Libya

Volume

145

Issue

4

fYear

1998

fDate

8/1/1998 12:00:00 AM

Firstpage

209

Lastpage

215

Abstract

A staircase phase approximation for generating a linear frequency-modulated continuous wave radar signal is considered and the use of filtering on the samples of the signal has been assumed in both transmission and reception. It is shown that an excellent spectrum of the radar signal can be obtained, provided that the appropriate value of the sample duration is used. The effect of noise due to the discrete representation of the signal is analysed for both the transmitted and received signal. It is shown that the level of the noise may be kept below the noise level of a high-quality oscillator even in the absence of any filter smoothing

Keywords

CW radar; FM radar; approximation theory; filtering theory; noise; radar signal processing; signal representation; signal sampling; signal synthesis; digitised FMCW radar waveforms; discrete signal representation; filtering; frequency-modulated continuous wave radar; high-quality oscillator; linear radar signal generation; noise analysis; noise level; received signal; sample duration; signal samples; spectrum; staircase phase approximation; transmitted signal;

fLanguage

English

Journal_Title

Radar, Sonar and Navigation, IEE Proceedings -

Publisher

iet

ISSN

1350-2395

Type

jour

DOI

10.1049/ip-rsn:19981310

Filename

731935