A STUDY OF THE INTERCEPTION OF LPI RADAR

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Authors
  1. Wight, J.S.
Corporate Authors
Carleton Univ, Ottawa ONT (CAN) Dept of Electronics;Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
This report begins with a brief review of classical intercept techniques which are based on probability of detection/probability of false alarm verus SNR criteria. These techniques are useful for countering an LPI radar's antenna gain advantage, and perform well for predetection SNRs above 6 dB (typical). These techniques are discussed in the context of ultra short LPI pulses. The report then developes approaches for countering the processing gain advantage of FM type LPI pulses with low and even negative SNR. These techniques are based on transforms taken over the pulse duration, and focuses specifically on the Wavelet transform and Secondary Detection techniques. Approaches for countering the processing gain advantage of direct sequence spread spectrum type LPI pulses based on an investigation of cyclostationary signals and the employment of delay and multiply chip detection is then presented. Biphase modulated signals are considered.
Keywords
FM radar;Spread spectrum radar;Wavelet transforms;Secondary detection;Cyclostationary signals;Bifrequency plane
Report Number
DREO-CR-93-664 — Contract Report (Final); Technical Report
Date of publication
01 Mar 1993
Number of Pages
42
DSTKIM No
95-03387
CANDIS No
148363
Format(s):
Hardcopy;Hardcopy;Document Image stored on Optical Disk

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