引言相控阵系统由大量相同的辐射单元和移相器组成。由于存在着大量重复的单元,因此少量单元的失效对阵列性能的影响不大,性能不会一下子变坏,这一特点是相控阵的一个重要优点。尽管如此,常常要求对系统工作特性进行监测,以确保其性能保持在可容许的良好水平上。此外,还希望知道一个单元何时发生故障及其位置在何处,以便尽早把这个失效的单元換掉,使阵列在所有时间都保持良好的性能。相控阵天线的监测方法 Introduction Phased array systems consist of a number of identical radiating elements and phase shifters. Because there are a large number of repeating units, the failure of a small number of units has little effect on the performance of the array, the performance will not deteriorate at once, this feature is an important advantage of the phased array. However, it is often required to monitor the operating characteristics of the system to ensure that its performance is maintained to a tolerable level. In addition, it is also desirable to know when a cell has failed and where it is located so that the failed cell can be replaced as soon as possible, keeping the array performing well all the time. Phased array antenna monitoring method