Compensation for distorted LFM signal

Author

Xu, Rongqirii ; Cao, Zhidao ; Liu, Xinggang

Author_Institution

Dept. of Radio Eng., Harbin Inst. of Technol., China

fYear

1993

fDate

24-28 May 1993

Firstpage

61

Abstract

A compensation method for non-ideal performance of the system using STRETCH processing (or full-deramp), and for modulation nonlinearity of LFM signal is presented. An analysis is developed to show that the effect caused by the non-ideal performance of the system on the signal output is time-invariant, and the effect caused by the nonlinearity of LFM signal on the output is time-variant. A series of simulation results demonstrate the efficiency of the method. Under some conditions, the sidelobe level as high as -5.76 dB may be reduced to -41 dB. If the tolerable sidelobe level is -30 dB, the target size may be extended to 120 m

Keywords

compensation; electric distortion; frequency modulation; pulse modulation; signal processing; 120 m; 30 dB; 41 dB; STRETCH processing; compensation; distorted LFM signal; full-deramp; linear frequency modulated signal; modulation nonlinearity; nonlinearity; sidelobe level; Chirp modulation; Frequency conversion; Performance analysis; Phase distortion; Phase modulation; Pulse compression methods; RF signals; Radio frequency; Signal analysis; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Aerospace and Electronics Conference, 1993. NAECON 1993., Proceedings of the IEEE 1993 National

Conference_Location

Dayton, OH

Print_ISBN

0-7803-1295-3

Type

conf

DOI

10.1109/NAECON.1993.290893

Filename

290893