基于单片机的伪随机多频广谱信号合成技术

Intergration Technology of Broad-spectrum of Pseudo-random Multi-frequency Signal Based on Single-chip Microcomputer

伪随机波形既具有某种随机波形特性,又能事先设定,并可以重复地产生和复制,随着当今科技的发展,伪随机多频广谱信号得到越来越广泛的应用;伪随机多频信号与一般的方波信号相比有很多优点,如带宽可控、能量集中等,结合广谱的特性,提出了一种伪随机多频广谱信号的合成技术,给出了硬件组成和软件实现方法,实现了包含8种以上基频的2n系列伪随机多频广谱信号的稳定输出;实验表明该系统结构简单,性能稳定,电源利用率高,可长时间稳定运行。

Pseudo-random waveform is both a wave of random, but also can be set in advance and can be repeatedly produced and repro- duced. At now, with the development of the science and technology, The application area of pseudo-random multi-frequency broad-spectrum signal is more and more abroad. Pseudo-random multi-frequency signals have more advantages than general square signal, such as the band- width controllable, enegy concentrated, and combinated broad-spectrum speciality bring forward a combination of pseudo-random multi-fre- quency broad-spectrum signal. The hardware structure and software realization method are presented. Achieve more than eight kinds of 2n series broad spectrum pseudo-random composite frequency signal. The experimental results show that the system structure is simple and sta- ble in its performance, also could run for a long time.