CAJ | 학술논문

在实际应用中，传统辅助通道方法受杂波分布先验信息及系统误差的限制，使辅助通道的选取偏离实际杂波分布。针对这一问题，提出了基于最小二乘参数估计的自适应空时二维辅助通道方法。首先利用单距离回波数据估计杂波分布并采用最小二乘方法估计系统参数，然后自适应选取辅助通道并进行降维空时自适应处理。利用单距离数据进行参数估计具有较高的参数估计精度，适用于任意阵列构型，具有一定的稳健性。
재실제응용중，전통보조통도방법수잡파분포선험신식급계통오차적한제，사보조통도적선취편리실제잡파분포。침대저일문제，제출료기우최소이승삼수고계적자괄응공시이유보조통도방법。수선이용단거리회파수거고계잡파분포병채용최소이승방법고계계통삼수，연후자괄응선취보조통도병진행강유공시자괄응처리。이용단거리수거진행삼수고계구유교고적삼수고계정도，괄용우임의진렬구형，구유일정적은건성。
The conventional auxiliary channel receiver method is limited by the prior knowledge of clutter distribution and system error in practical application , thus inducing mismatch between the selected auxiliary channels and actual clutter distribution . To deal with the problem , based on least-square parameter estimation , an adaptive space-time auxiliary channel receiver method is proposed in this paper . Firstly , a space-time snapshot of a single range cell is used to estimate the clutter distribution and system parameters are estimated via the least-square method . Then the auxiliary channels are selected adaptively to carry out reduced-dimension adaptive space-time processing . With snapshots from a single range bin , parameter estimation can be achieved with better accuracy . Besides , the proposed method is applicable to arbitrary array geometries , and therefore it is a flexible and robust implementation . Simulation results demonstrate the effectiveness of the proposed method .