摘要
研究了一种使用DSP和DDS产生混沌调相信号的途径。对基于TMS320C6701和AD9852的混沌调相信号系统硬件结构设计进行了阐述;详细介绍了直接数字频率合成(DDS)的工作原理和基本结构;以Logistic混沌方程为例,推导了混沌调相信号的模糊函数。研究结果表明,混沌调相波形的模糊函数接近理想的图钉型,具有较强的抗干扰能力。
An approach of chaotic phase-modulated signal based on DSP an d DDS technique is researched in this paper. It describes the hardware design and implementation of the chaotic phase-modulated system based on TMS320C6701 and AD9852. The structure and basic principle direct digital frequency synthesizer （DDS） are introduced in detail. The fuzzy function of the chaotic phase-modulated waveform of fuze is deduced by taking Logistic equation as an example. The results of research show that the function of the chaotic phase-modulated waveform approximates the ideal model of ＂pushpin＂. Therefore, its ability of anti-jamming is strong.
出处
《电脑与电信》
2008年第8期92-93,101,共3页
Computer & Telecommunication
