【摘要】 随着雷达对抗技术的发展,出于对信号低截获特性的考虑,战场上的雷达信号调制愈加复杂。为了降低发射机调制链路设计的复杂性,提出了一种通过现场可编程逻辑门阵列(FPGA)控制AD9858芯片产生脉内线性调频(LFM)、脉间二相编码的中频脉冲信号方法。经过设计和电路测试,输出波形达到了技术要求,波形参数准确性较高,且系统控制灵活,性能良好。更多还原

【Abstract】 With the development of radar technology,considering the low probability of interception, the modulation of radar signal becomes more and more complex. In order to simplify the complex design of transmitter,basing on FPGA to control AD9858,this study put forward a realization method of a intrapulse Linear Frequency Modulation(LFM) and interpulse Bi-phase coded intermediate frequency pulsed radar signal. The results of design and test proved that the output waveform met the technical requirement and the waveform parameters were accurate; furthermore, this system could be controlled easily and its performance was good.更多还原