| 摘要 |
A high-definition radar imaging system and method receives image data and adaptively processes the image the data to provide a high resolution image. The imaging technique employs adaptive processing using a constrained minimum variance method to iteratively compute the high-definition image. The high-definition image I is expressed in range and cross-range as I(r,c)=minomegaHRomega, where omega is a weighting vector and R is a covariance matrix of the image data. A solution for I(r,c) is approximated by i) forming Y=[x1 . . . xK]T/{square root over (K where x1 . . . xk are beamspace looks formed from image domain looks and with y1, y2, and y3 denoting the Kx1 columns of Y; ii) computing r21=y2Ty1 and r31=y3Ty1, and b=r21y2+r31y3; computing gamma asand iii) computing I(r,c) as I(r,c)=∥y1-gammab∥2.
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