Optimization design of communication-radar integrated waveform generation system

With the increasingly complex electromagnetic and transmission environment, in order to reduce the volume of the platform and the mutual interference of the communication radar signals, the demand of the integrated platform is more and more strong. Based on the integrated method of radar communication, three kinds of ways of integration are summarized, and the existing design scheme is introduced in the paper. And then analysis of the program found output frequency instability problems by using direct digital frequency synthesis technology. Therefore, we propose the integration system optimization design based on FPGA and DSP to control DDS. The stability of output frequency is improved by the feedback of the system, and the stability of the output frequency is increased. The simulation results show that the proposed scheme has a better stabilizing effect on the output frequency.

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