Research on Sub-array Digital Phased Array Testing Method

The sub-array digital phased array radar is a hybrid mode of analog array and digital array. Reasonable process design can improve testing efficiency and accuracy. This paper studied the test method and process of the sub-array digital phased array, including channel troubleshooting, midfield and near field calibration, midfield lobe detection and near field lobe pattern test of array. The application of full-cycle test procedure verifies the sub-array digital phased array antenna test method, and provides support for the testing technology development of this antenna architecture.