阵列天线阵元位置误差的校正算法

天线阵元位置误差会对接收信号相位有很大的影响。接收信号相位误差会使高精度的信号波达方向估计性能恶化甚至失效，因此在实际系统中对阵元位置误差进行校正是非常有必要的。该文提出了一种基于多重信号分类算法的不需已知准确信号源方位的校正算法。该算法适用于任何形式的阵列，稳健性较好。实验仿真分析证实了该算法的有效性，并根据实际测向系统取得的数据对系统的天线位置进行了校正，实验取得较好的结果。

Calibration algorithm for sensor position error of array antenna

The phase of the received signal is influenced greatly by sensor position error and the high-precision of direction-of-arrival（DOA） is deteriorated by phase error, so calibrating sensor position error is necessary in the actual system. Based on multiple signal classification（MUSIC） algorithm without an exact azimuth, a calibration algorithm is proposed. The algorithm is applicable in any array, and is robust. The validity of this algorithm is proved by the emulational analysis. Based on the actual data, the sensor position of the direction finding system is well calibrated.