Smith B H
ERIM Int. Inc., Ann Arbor, MI 48113-4008, USA.
IEEE Trans Image Process. 2000;9(6):1088-93. doi: 10.1109/83.846250.
Spatially variant apodization (SVA) is reformulated for use on synthetic aperture radar imagery with an arbitrary sampling rate. The algorithm is implemented as a spatially varying three-point finite impulse response filter, and constraints on the filter parameters are developed from physically motivated concepts. By varying the parameters of the filter, the sidelobe energy is reduced with no effective loss of resolution. The procedure produces an output comparable to that of the integer Nyquist version of SVA, and effectively eliminates sidelobe artifacts with no loss of mainlobe resolution.
空间可变切趾术（SVA）被重新制定，以用于具有任意采样率的合成孔径雷达图像。该算法被实现为一个空间变化的三点有限脉冲响应滤波器，并且从物理动机概念出发制定了对滤波器参数的约束。通过改变滤波器的参数，旁瓣能量得以降低，而分辨率没有有效损失。该过程产生的输出与整数奈奎斯特版本的SVA相当，并且有效地消除了旁瓣伪像，同时不损失主瓣分辨率。
