引信目标回波模拟器的建模与实现

针对脉冲多普勒调制引信的目标回波进行了建模与仿真,并在此基础上研制成功了引信目标回波模拟器。该引信目标回波模型基于多散射中心来模拟的方法,并将环境因素的影响引入模型。引信目标回波模拟器的每个通道的控制均基于FPGA器件,结合并口通信和SRAM存储器并通过DDS的回波合成实现引信目标单散射点回波的模拟,并采用多路并行的方式来实现模拟目标的多散射中心。实际的测试结果验证了目标模型的建模及回波模拟器实现的可行性与正确性。

Echo Modeling and Realization of Simulator in Fuze Target Simulator

Echo modeling and simulation in a PD fuze were studied, and then the fuze target simulator was built up successfully on the basis of the model. A model of the fuze target was built up with equivalent scattering point; the effect of environment was analyzed. The single channel simulator was based on FPGA, combined with parallel port communication, SRAM and DDS which simulated the target echo of the single scattering point, and then the parallel mode of the single simulators was used to simulate the target echo of many scattering points. The result of the actual test validates the correctness of the model and the simulator.