论文部分内容阅读
阵列天线各通道幅度增益和相位误差使得高分辨率的参数估计算法的性能下降,特别是相位的误差,将会引起参数估计的偏离。所以对于各通道的校正是很有必要的。提出了一种均匀线阵通道的校正方案,用于降低各信道的不一致性。方案的基本思想是在阵列满足远场的位置放置一个RF辐射源。通过对RF的开、关,得到RF信号的相关矩阵R,用于各通道的不一致性估计。该方案校正过程中RF将进行一次频率切换,可以通过RF将其切换信息传送给校正阵列。以DOA(波达方向)估计为例,通过计算机仿真,可以看出方案的有效性。
The gain and phase error of each channel of array antenna make the performance of high-resolution parameter estimation algorithm decrease, especially the phase error will cause the deviation of parameter estimation. So for each channel correction is necessary. A uniform linear array channel correction scheme is proposed to reduce the channel inconsistency. The basic idea of the scheme is to place an RF source at the location where the array meets the far field. Through the RF on and off, get the RF signal correlation matrix R, for the inconsistency of each channel estimation. The RF correction during the program will be a frequency switching, RF switching information can be sent to the correction array. Taking the DOA estimation as an example, the validity of the scheme can be seen through computer simulation.