To solve the problem of unstable signal in complex electromagnetic environment,a simulation system of complex electromagnetic environment is designed.The signal generator based on DDS technology is used as the hardware core of the system,the signal modulation parameters are determined by signal mod-eling,and the software design is realized by VS+Matlab mixed programming.The experimental data show that it can meet the requirements of editing and adjusting different modulation parameters within and be-tween pulses of signals,and realize the function of generating a variety of stable complex radar signals and communication signals.
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