In polarimetric synthetic aperture radar (PolSAR) images, strong scattering centers on man-made targets contaminate their adjacent weak scattering points. We can use the target null theory to mitigate this effect, so that we can acquire the adequate scattering mechanism of these weak points. Since the efficiency of the theory depends on the system biases of the transmitting/receiving polarimetric channels, we analyze the relationship between suppression efficiency and the system bias requirement when the PolSAR system works in two modes: the alternate transmit and simultaneous receive (ATSR) mode and the simultaneous transmit and simultaneous receive (STSR) mode. The theoretical model proposed in this letter is verified by electromagnetic simulations and GF-3 data.

中文翻译：

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目标零理论应用的极化偏差评估


在偏振合成孔径雷达 (PolSAR) 图像中，人造目标上的强散射中心会污染其相邻的弱散射点。我们可以利用目标零理论来减轻这种影响，从而获得这些弱点的充分散射机制。由于该理论的效率取决于发射/接收极化通道的系统偏差，因此我们分析了当PolSAR系统工作在两种模式：交替发射和同时接收（ATSR）模式时，抑制效率与系统偏差要求之间的关系以及同时发送和同时接收（STSR）模式。这封信中提出的理论模型通过电磁仿真和GF-3数据得到了验证。