A novel nonlinear frequency modulation waveform design aimed at side-lobe reduction

Author

Yue Wenzhen ; Zhang Yan

Author_Institution

Beijing Inst. of Tracking & Telecommun. Technol., Beijing, China

fYear

2014

fDate

5-8 Aug. 2014

Firstpage

613

Lastpage

618

Abstract

Aimed at the problem of over-high side-lobes of the matched filter response of common radar signals, we propose a new NLFM signal with ultra-low side-lobes. The new frequency modulation function is a Tangent function with its parameters determined experimentally. The simulation results suggest the new side-lobe level has been improved by at least 10dB. In this paper, we thoroughly analyze the main-lobe width, Doppler tolerance, the effect of the sampling rate and the compression rate of this new NLFM signal. Its ambiguity function is also plotted and analyzed. In the end, the consisting problems are discussed, too.

Keywords

frequency modulation; matched filters; radar signal processing; Doppler tolerance; NLFM signal; frequency modulation function; matched filter response; nonlinear frequency modulation waveform design; radar signals; side-lobe reduction; tangent function; Doppler shift; Fitting; Frequency modulation; Matched filters; Radar; Signal resolution; Non-linear Frequency Modulation(NLFM) Signal; Pulse Compression; Side-lobe Reduction; Waveform Design;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, Communications and Computing (ICSPCC), 2014 IEEE International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4799-5272-4

Type

conf

DOI

10.1109/ICSPCC.2014.6986266

Filename

6986266