Title :
The simple method for analysis of nonlinear frequency distortions in FMCW radar
Author :
Kulpa, Krzysztof S. ; Wojtkiewicz, Andrzej ; Nalecz, M. ; Misiurewicz, Jacek
Author_Institution :
Inst. of Electron. Syst., Warsaw Univ. of Technol., Poland
Abstract :
The paper presents a simple method for the estimation of nonlinear frequency distortions of linear frequency modulated (LFM) signals used in FMCW radars. This method, derived from the polynomial model of a nonlinear LFM signal phase, is based on finding the maximum of the two-dimensional chirp-like transform of the IF signal obtained by mixing the transmitted LFM signal with its delayed copy. Using the suggested transform, we show the ability of the method to detect and classify signal distortions
Keywords :
CW radar; FM radar; parameter estimation; radar signal processing; transforms; FMCW radar; IF signal; linear frequency modulated signals; nonlinear frequency distortion estimation; polynomial model; signal distortion classification; signal distortion detection; two-dimensional chirp-like transform; Chirp modulation; Delay effects; Frequency estimation; Frequency modulation; Nonlinear distortion; Phase estimation; Polynomials; Radar detection; Signal analysis; Signal detection;
Conference_Titel :
Microwaves, Radar and Wireless Communications. 2000. MIKON-2000. 13th International Conference on
Conference_Location :
Wroclaw
Print_ISBN :
83-906662-3-5
DOI :
10.1109/MIKON.2000.913915
