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Comparison of matched filter and dechirp processing used in Linear Frequency Modulation

  • Jun Wang*
  • , Duoduo Cai
  • , Yaya Wen
  • *Corresponding author for this work
  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Linear Frequency Modulation (LFM) is an important wideband signal, which is widely used in radar system. Both matched filter and dechirp processing can realize pulse compression of LFM, and then get high resolution target range profile. Matched filter has strong anti-noise ability; it can also achieve accurate pulse compression under seriously noisy environment. Dechirp processing can reduce the sample rate of AD efficiently, but the anti-noise ability is not as good as matched filter. This paper analyzes the algorithms of matched filter and dechirp processing which are used in LFM, then simulates the pulse compression to get high resolution target one-dimension range profile under different signal to noise ratio (SNR). The simulation results indicate that matched filter has strong anti-noise ability, dechirp processing has advantage in sample rate of data processing by hardware. This work can provide the theory basis and guidance to select the best pulse compression method under different scenes.

Original languageEnglish
Title of host publicationCCIE 2011 - Proceedings
Subtitle of host publication2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering
Pages70-73
Number of pages4
DOIs
StatePublished - 2011
EventIEEE 2nd International Conference on Computing, Control and Industrial Engineering, CCIE 2011 - Wuhan, China
Duration: 20 Aug 201121 Aug 2011

Publication series

NameCCIE 2011 - Proceedings: 2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering
Volume2

Conference

ConferenceIEEE 2nd International Conference on Computing, Control and Industrial Engineering, CCIE 2011
Country/TerritoryChina
CityWuhan
Period20/08/1121/08/11

Keywords

  • dechirp processing
  • high resolution range profile
  • matched filter
  • pulse compression

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