Improved radar target identification and discrimination by matched frequency hopping spread spectrum (MFH/SS) signals and clipped radar-signature

A new target identification technique utilizing MFH/SS technique has been introduced by the authors. This technique employs FFH/SS signals for target illumination. The radar receivers are matched to the hopping frequencies that give maximum backscattering from the desired target. These frequencies form a MFH pattern for each target. In case of instantaneously dealing with multiple targets, the suggested technique suffers from interference (frequency hitting) between the MFH patterns. To improve the performance in such a situation we modify our technique by considering matching the frequency hopping patterns to clipped frequency signatures. The MFH patterns are thus concentrated in the frequency regions in which the targets have considerable backscattering. The low magnitude of the background scattering are treated as background noise. The detection probability illustrates the advantages of the clipped frequency signature MFH/SS technique as an effective tool for target discrimination/identification.