极化雷达的同时全极化测量与校准技术

 针对传统同时全极化测量技术中存在的极化测量误差问题,介绍了基于模糊函数矩阵的同时全极化测量新方法,有效地消除了因发射信号非正交性引入的测量误差,并给出了相应的信号处理流程;针对传统极化校准技术实施难度高、校准精度差等问题,给出了基于单个金属球定标体的极化校准新方法;基于瞬态极化雷达实验系统(KD-IPR)开展的外场试验对上述方法进行了验证.

Polarization Measurement and Calibration Technologies of Instantaneous Polarimetric Radar

As the most advantage measurement method nowadays, the Instantaneous Polarization (IP) measurement technology becomes one of the hot spots in the research field of polarimetric radar. Aiming at the measurement error of the traditional IP measurement technology, a new measurement method based on ambiguity function matrix is introduced. The measurement error caused by the nonorthogonality of the transmitting signals is eliminated by this method. The signal processing flowchart of the method is given. In order to resolve the problems involving the traditional polarization calibration technologies, such as implementation difficulty and low accuracy, the calibration method using single mental sphere is given. The availability of these methods is verified through the field test conducted by the IP radar system, KD-IPR.