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Moving target detection via airborne HRR phased array radar

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2 Author(s)
Guoqing Liu ; Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL, USA ; Jian Li

We study moving target detection in the presence of temporally and spatially correlated ground clutter for airborne high range resolution (HRR) phased array radar. We divide the HRR range profiles into large range segments to avoid the range migration problems that occur in the HRR radar data. Since each range segment contains a sequence of HRR range bins, no information is lost due to the division and hence no loss of resolution occurs. We show how to use a vector autoregressive (VAR) filtering technique to suppress the ground clutter. Then a moving target detector based on a generalized likelihood ratio test (GLRT) detection strategy is derived. The detection threshold is determined according to the desired false alarm rate, which is made possible via an asymptotic statistical analysis. After the target Doppler frequency and spatial signature vectors are estimated from the VAR-filtered data as if a target were present, a simple detection variable is computed and compared with the detection threshold to render a decision on the presence of a target. Numerical results are provided to demonstrate the performance of the proposed moving target detection algorithm

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:37 ,  Issue: 3 )

Date of Publication:

Jul 2001

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