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提出一种基于DDS和FPGA技术的高动态扩频仿真信号源的实现方案。采用了DDS技术的芯片AD9854和AD9850,能够模拟多普勒频移,实现高动态环境仿真。载波中心频率变化范围达到100kHz,变化率1.8kHz/s。
A scheme of high dynamic spread spectrum simulation signal source based on DDS and FPGA technology is proposed. The AD9854 and AD9850 chips, which use DDS technology, are capable of simulating Doppler shifts for high-dynamic-environment simulations. Carrier center frequency range of 100kHz, the rate of change 1.8kHz / s.