A NOVEL MOVING TARGET DETECTION APPROACH FOR DUAL-CHANNEL SAR SYSTEM | Zendy

Bin Tian | Zendy; Daiyin Zhu | Zendy; Zhaoda Zhu | Zendy

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A NOVEL MOVING TARGET DETECTION APPROACH FOR DUAL-CHANNEL SAR SYSTEM

Author(s) -

Bin Tian,

Daiyin Zhu,

Zhaoda Zhu

Publication year - 2011

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier10120107

Subject(s) - constant false alarm rate , moving target indication , detector , computer science , false alarm , eigendecomposition of a matrix , statistic , algorithm , artificial intelligence , covariance matrix , channel (broadcasting) , eigenvalues and eigenvectors , computer vision , pattern recognition (psychology) , radar , mathematics , statistics , physics , pulse doppler radar , radar imaging , telecommunications , quantum mechanics

A novel approach to moving target detection is proposed for dual-channel SAR system. This approach is on the basis of eigen- decomposition of the sample covariance matrix and examines the statistic of the second eigenvalue and the Along-Track Interferometric (ATI) phase for ground moving target indication. Based on this statistic, a new Constant False Alarm Rate (CFAR) detector can be designed to solve the problem of GMTI. To detect slow moving targets more accurately, the second eigenvalue and the ATI phase pre- thresholds are implemented before a CFAR detector. Experimental results on measured SAR data are presented to demonstrate that this novel detector has wider range of detection velocity and lower false alarm probability.

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