FMCW range resolution for MMW seeker applications

Author

Piper, Sam O.

Author_Institution

Georgia Tech. Res. Inst., Atlanta, GA, USA

fYear

1990

fDate

1-4 Apr 1990

Firstpage

156

Abstract

The power spectrum for the mixer output for a homodyne frequency-modulated carrier wave (FMCW) system with a sawtooth waveform corrupted with sinusoidal nonlinearity is presented. Since this difference or beat frequency spectrum for an FMCW radar corresponds to the return power as a function of range, the spectral width is proportional to the range resolution. This nonlinearity analysis illustrates the challenge of achieving the fine range resolution implied by the wide transmit bandwidths often used. Fine range resolution is important to seeker performance because it reduces the clutter area and clutter return power. Waveform bandwidth and range resolution, frequency sweep nonlinearities, and computational details are discussed

Keywords

frequency modulation; military systems; radar systems; spectral analysis; FMCW radar; FMCW range resolution; MM wave; MMW seeker applications; beat frequency spectrum; clutter area; clutter return power; frequency sweep nonlinearities; homodyne frequency-modulated carrier wave; mixer output; nonlinearity analysis; power spectrum; sawtooth waveform; sinusoidal nonlinearity; spectral width; transmit bandwidths; Bandwidth; Clutter; Difference equations; Frequency modulation; History; Millimeter wave radar; Missiles; Radar applications; Radio frequency; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Southeastcon '90. Proceedings., IEEE

Conference_Location

New Orleans, LA

Type

conf

DOI

10.1109/SECON.1990.117792

Filename

117792