Effects of RFI on UWB-SAR using LFM waveforms

Author

Xiaotao, Huang ; Zhimin, Zhou ; Diannong, Liang

Author_Institution

Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China

fYear

2001

fDate

2001

Firstpage

631

Lastpage

633

Abstract

The dual requirement of ultra-wide band synthetic aperture radar (UWB-SAR) for high range resolution and low frequency penetration proposes the problem of radio frequency interference (RFI) suppression. Although careful design of the receiver hardware can reduce this difficulty, a great amount of RFI will still distort the actual target returns. The effects of RFI on both of the design of hardware and the task of signal processing are studied. We focus our analysis on the basic pulse compression in linear frequency modulated (LFM) UWB-SAR. The output of a typical sinusoidal RFI after pulse compression is derived and proved to be closely related to the frequency of the RFI. Computer simulations successfully verify our conclusions

Keywords

FM radar; image resolution; interference suppression; pulse compression; radar imaging; radar receivers; radar resolution; radiofrequency interference; synthetic aperture radar; LFM waveforms; RFI suppression; UWB-SAR; computer simulations; high range resolution; image formation; linear frequency modulation; low frequency penetration; pulse compression; radio frequency interference; receiver hardware; signal processing; sinusoidal RFI; target detection; target returns; ultra-wide band synthetic aperture radar; Chirp modulation; Computer simulation; Frequency modulation; Hardware; Pulse compression methods; Pulse modulation; Radiofrequency interference; Receivers; Signal design; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2001 CIE International Conference on, Proceedings

Conference_Location

Beijing

Print_ISBN

0-7803-7000-7

Type

conf

DOI

10.1109/ICR.2001.984797

Filename

984797