【摘要】 采用电子计数法实现脉冲激光引信定距的本质是测量发射脉冲和目标反射回波脉冲的时间差。为实现脉冲激光引信的精确定距,在分析电子计数法时间测量的原理和误差因素基础上,给出了脉冲激光引信高精度实时定距的原理框图,用A ltera公司Cyc lone系列的FPGA芯片实现了时间测量模块,其高速计数器的工作频率达到800MHz,满足脉冲激光引信的精度和实时性要求。在Quartus II软件中进行了后仿真,得到了满意的结果。更多还原

【Abstract】 The essence of range measurement technique in pulse laser fuzes is to measure the time diffe-(rence) of transmitted pulse and echo pulse.The time measurement theory and error of electronic counting process are analyzed.And the range measurement block diagram of pulse laser fuze is illustrated.It is realized by Altera Cyclone series FPGA.The frequency of the high speed counter is up to 800MHz which meets the needs for precision and real time of the pulse laser fuzes.The time delay simulation has been done by Quartus II,and the result of simulation is satisfactory.更多还原