Noncoherent pulse compression

Nadav Levanon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Pulse compression can be performed in noncoherent radars by using coded on-off keying (OOK). We show how any bipolar pulse-compression code (e.g., Barker) can be modified into unipolar OOK through Manchester coding. The resulted transmitted signal is a burst of dense subpulses, with pulse position modulation. In the receiver, the envelop-detected signal is aperiodically cross-correlated with a mismatched bipolar reference signal, yielding noncoherent integration with a low-sidelobe response. The concept can be used in simple radars where Doppler information is not required, in direct-detection laser radars and in ultrawideband (UWB) radars. Examples are given with bursts of 13 and 70 subpulses. Detection probabilities dependence on SNR is studied and compared with coherent processing.

Original languageEnglish
Pages (from-to)756-765
Number of pages10
JournalIEEE Transactions on Aerospace and Electronic Systems
Volume42
Issue number2
DOIs
StatePublished - Apr 2006

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