数字化子阵天线及通道指标测试方法研究

伴随着雷达技术的飞速发展，数字化相控阵天线开始广泛运用于各种相控阵雷达当中；阵列规模的大型化促成了子阵技术的出现、发展与应用，数字化子阵的应用可以在保证阵列雷达系统性能的同时最大限度地降低系统成本及工程实现难度。由于数字化相控阵天线的工作原理与传统模拟相控阵天线差异极大，测试方法也发生了根本性的改变，本文就数字化子阵的工作原理进行了探讨，提出了新型数字化子阵天线指标的测试方法及测试系统基本架构，同时详细阐述了重要通道指标的测试步骤。

Research on Test Method of Digital Phased Sub-Array Antenna and Channel

With the rapid development of the radar technology, digital phased array antennas have been widely used in various kinds of phased array radar. Large scale arrays have contributed to the emergence, development and application of sub-array technology. The application of digital sub-array can ensure the performance of array radar system and minimize the system cost and engineering difficulty. Due to the great difference of the principle between digital phased array antenna and conventional analog phased array antenna, the fundamental changes have taken place in the test method. This paper introduces the working principle of digital sub-array. The method for digital sub-array antenna test and the basic structure of the test system are proposed. Meanwhile, the testing steps of important channel targets are elaborated in detail.