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Spatial adaptive subspace detection in OTH radar

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3 Author(s)
G. A. Fabrizio ; Radar Signal Process. Group, Defence Sci. & Technol. Organ., Edinburgh, SA, Australia ; A. Farina ; M. D. Turley

The work presented here addresses the problem of target detection against spatially structured interference composed of jamming plus noise, where for practical reasons, the received target wavefront may also deviate from the traditional plane wave model. This detection problem arises in over-the-horizon (OTH) radar systems where spatially distributed targets often compete for detection against directional interference that is spread over the entire range-Doppler search space. Conventional detection processing schemes are compared with a recently proposed adaptive subspace detector (ASD) that takes both the spatial structure of the interference and the possibility of target wavefront distortions into account. Experimental array data recorded by the Jindalee sky-wave and Iluka surface-wave OTH radar systems, located in central and northern Australia respectively, is used to evaluate detection performance.

Published in:

IEEE Transactions on Aerospace and Electronic Systems  (Volume:39 ,  Issue: 4 )