Review of the homodyne technique for coherent radar

Author

Christensen, E. ; Madsen, S. ; Skou, N.

Author_Institution

Electromagn. Inst., Tech. Univ. of Denmark, Lyngby, Denmark

fYear

1990

fDate

7-10 May 1990

Firstpage

159

Lastpage

163

Abstract

The merits of using homodyne techniques for coherent radar are examined. The influence of various component deficiencies is discussed with relation to the choice between homodyne and heterodyne. The use of digital IQ signal generation and processing to correct for some of the problems of modulator and demodulator design by predistortion, offset correction, etc. is briefly addressed. A 5.3 GHz synthetic aperture radar designed for strip mapping at high resolution is then considered to illustrate the use of the homodyne approach. Measurement results on quadrature modulators and demodulators at 300 MHz and 5.3 GHz are given to support the contention that the homodyne technique can be applied successfully

Keywords

demodulators; modulators; radar systems; signal processing; 300 MHz; 5.3 GHz; SHF; UHF; coherent radar; digital IQ signal generation; digital IQ signal processing; heterodyne techniques; high resolution; homodyne technique; measurement; offset correction; predistortion; quadrature demodulators; quadrature modulators; strip mapping; synthetic aperture radar; Bandwidth; Demodulation; Filtering; Frequency conversion; Mixers; Oscillators; Radar applications; Signal generators; Signal processing; Spread spectrum radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 1990., Record of the IEEE 1990 International

Conference_Location

Arlington, VA

Type

conf

DOI

10.1109/RADAR.1990.201155

Filename

201155