DSP技术在智能化引信中的应用

为提高无线电定高引信性能，将高速数字信号处理器(DSP)、复杂可编程器件(CPLD)、可编程门阵列(FPGA)和直接数字频率合成(DDS)等，应用于引信的时序产生、控制和信号处理电路。在不同空域采用变换时序和发射脉冲宽度的方法，可同时保证引信的灵敏度和相对精度。特别是在超低空时，充分利用微波泄漏信号和DSP的数字信号处理功能，能使定高引信在发射脉宽相同的情况下，获得更好的定高精度和超低空特性，并具有实时适应性和智能性。

Application of DSP Technology in the Intellectualized Fuze

To improve the performance of radio altimeter, the digital signal processor (DSP), complex programmable logical device, field programmable gate array and direct digital synthesizer were applied to the time sequence circuit, control circuit and signal processing circuit in fuze. Time sequence circuit changing and emitter pulse at the different height ensured both sufficient sensitivity and relative precision. Especially in super-low airspace, by full use of the leak signal and the good performance of powerful digital signal processing of DSP, the high precision and performance of super-low airspace could be acquired under the situation of the same plus-width, and the fuze could realize the self-adaption in real-time and intellectualized.