| 摘要 |
A high-definition radar imaging system and method receives image data and adpatively 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)= min omega <H>R omega , 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>/ 2ROOT K where x1...xk are beamspace looks formed from image domain looks and with y1, y2, and y3 denoting the K X 1 columns of Y; ii) computing r21 = formula (I); computing UPSILON as formula (II); and iii) computing I(r,c) as formula (III). |
