脉冲多普勒引信杂波启动特性的计算机仿真

Computer simulation of the clutter startup feature of PD fuze

对于采用下视工作方式防空导弹,地、海杂波产生的影响不容忽视,它将严重影响引信低空时的正常工作,因此分析地、海杂波对引信的干扰进而提高引信的抗杂波能力是非常必要的。结合脉冲多普勒引信工作特点,对杂波进行了建模,分析了影响杂波信号强度的因素,提出了按照引信距离多普分辨单元进行杂波信号强度分析的方法。通过实例仿真对该算法进行了验证,给出了两种实例下的仿真结果。介绍的方法具有运算量小、速度快的特点,适合工程应用。

The impact of ground or sea clutter on aerial defense missile working in the look down mode can not be ignored which affects the normal operation of the aerial defense missile. Accordingly it is necessary to analyze the jamming of clutter on fuze and to enhance the anti-jamming ability. According to the working characteristic of the pulse Doppler radio fuze, the clutter model is built up, the clutter signal intensity impact factors are analyzed and a method of clutter signal intensity in the cell of fuze distance-Doppler frequency is brought forward. The simulation results are given based on the above method. In a word, the method mentioned is characteristic of less calculation and high speed which is fit for the project application.