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Efficient Wideband Jammer Nulling When Using Stretch Processing
2000 Award Winner
Jose A. Torres, The MITRE Corporation
Richard M. Davis, Senior Member, IEEE, The MITRE Corporation
J. David R. Kramer, Life Member, IEEE, The MITRE Corporation
Ronald L. Fante, Fellow, IEEE, The MITRE Corporation
ABSTRACT
Techniques are described for performing adaptive jammer nulling over extremely wide bandwidths on radar systems which use linear frequency modulated (LFM) waveforms and stretch processing. It is assumed that the range uncertainty of the target is a small percentage of the equivalent range extent of the uncompressed pulse. The assumption allows the cancellation to take place following stretch processing in either the time domain using a narrowband sliding filter that keeps up with the chirp rate or in the frequency domain. The new approach supports nulling performance over gigahertz of bandwidth comparable to that previously achieved over a few megahertz using approximately the same number of spatial degrees of freedom.
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Publication
Published in 2000 ©IEEE. IEEE Transactions on Aerospace and Electronic Systems, Vol. 36, No. 4, pp. 1167-1178.
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