基于InSAR的上行天线组阵校相方法分析

Uplink Array Phase Calibration Method Analysis Based on InSAR

为解决上行天线组阵发射机相位调整问题,提出一种基于月球地形高程模型的InSAR相位校正方法。利用天线阵元同时观测月面同一区域,根据月面各点在两幅复图像中的相位差,得出上行信号的相位差,从而获得天线间的相位标校量,同时给出了影响相位校正精度的因素。分析结果表明,采用InSAR干涉法进行上行天线组阵相位标定是一个可行方案。

To solve the phase adjustment problem of the uplink antenna array transmitter, this paper presents a phase calibration method based on the lunar terrain elevation model of InSAR. The antenna array elements simultaneously observe the same region of lunar surface, and according to the phase difference in the two complex images of each point on the lunar surface, the uplink signal phase difference is gotten, and the phase calibration value between the antennas is obtained. At the same time, the factors affecting the accuracy of phase calibration are given. The results show that the InSAR interference method for phase calibration is feasible.