|Yaron Seliktar, Douglas B. Williams, and E. Jeff
School of Electrical and Computer Engineering
Georgia Institute of Technology
Atlanta, GA 30332-0250
tel: (404) 633-4737
Abstract Monopulse processing is used to provide high precision angle estimates for target tracking. Space-time processing in fast-time is necessary to reject terrain scattered interference (TSI) and has been applied to suppress mainbeam jamming. By judicious combination of the two techniques, we are able to attain high precision angle estimates in the presence of TSI and mainbeam jamming. The merit of the resulting processor is in the successful exploitation of what is typically a nuisance source of interference (i.e. TSI) to achieve target angle estimation performance far better than has previously been possible in a mainbeam jamming environment. Examples using Mountaintop datasets demonstrate the viability of the proposed space-time adaptive monopulse processor in real world TSI and mainbeam jamming scenarios. The examples further demonstrate a dramatic improvement in angle estimation performance over conventional and spatially adaptive monopulse techniques.
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