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Using USB 3.0 hubs and synthesis instruments, highly integrated RF transceiver hardware, and combined with open and scalable software, the automatic testing of S-band, C-band, and X-band weather radars is realized. The system software adopts a “layered mode” architecture, which integrates the test process with the business model to realize standardized and automated testing. By comparing the measurement of the transmitter’s output pulse envelope and limit improvement factor, the integrated platform has higher test accuracy, no manual recording and calculation are required, and the judgment of radar performance is more accurate, which solves the limitations of a single radar system test platform and support platform, and improves the test efficiency and agility of the national multi-band weather radar system.