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Multi-channel wideband signal full bandwidth synchronous acquisition method

The traditional phased-array radar multichannel synchronous detection method uses external signal source to send signals as excitation. This method not only occupies large space, and is not easy to carry, but also has high cost. When using wideband signal, the phase correction method of wideband signal is not easy to be realized by narrowband signal correction method. In view of the above two problems, this paper proposes a design method using DAC as a synchronous source and a method of full bandwidth phase correction of broadband signal based on FPGA, and introduces the reason for the error and the analysis method.