高频地波雷达天线阵列的自校正

针对高频地波雷达回波信号是一维信号的特点，构造了任意形状的三角形阵列，将理想情况下用于二维到达角估计的空时DOA矩阵法进行了推广，使其能适用于存在幅相误差的阵列．利用将推广的空时DOA矩阵法用于一维到达角估计时产生的冗余信息，构造方程组．通过解方程组得到天线阵列间幅度和相位误差，从而实现高频地波雷达通道的幅相自校正．对模拟数据与实测数据的处理结果均证实了本方法的有效性.

Self-Calibration of HF Ground Wave Radar Antenna Arrays

Since the sea echo is one dimensional signal,this paper,based on an arbitrary triangular array,presents that space-time DOA matrix method,which is originally used to estimate two-dimensional angles of arrival under ideal conditions,can be reshaped to be used under amplitude and phase errors.When we applied the reshaped algorithm to one-dimensional signals,we can get some groups of equations by taking use of redundant information and then estimate the array's amplitude and phase errors simultaneously so as to achieve self-calibration.Its validity is verified not only by computer simulation,but also by comparing treatment results of measured data before and after calibration with the GPS-measured result.