一种基于DSP/BIOS的跳频图案生成方法

摘要

在跳频通信系统中，跳频图案生成大多基于FPGA实现。提出了一种新的基于DSP生成跳频图案的方法。分析了DSP/BIOS的启动过程和DSP定时器工作原理，通过对DSP定时器计数器的控制，利用定时器中断生成跳频周期，进而生成跳频图案。对方法的实现结果进行了测试，给出了分别采用CLK和PRD模块实现时的跳频周期曲线，分析了测试结果，指出采用CLK模块更有优势，可以满足系统设计需求。%In the implementation of frequency hopping system, frequency hopping pattern is usu-ally generated based on FPGA. A new frequency hopping pattern generation method is proposed here, based on DSP. The startup procedure of DSP/BIOS is analyzed at first, then the working principle of the DSP timer is too. Through the control of DSP timer counter, the frequency hopping period is generated using the timer interrupt. So the frequency hopping pattern is gener-ated. The results of this method are tested and given, including the frequency hopping period curves separately using DSP/BIOS’ s CLK and PRD modules. With the analysis of the results, it is pointed out that CLK module is better over PRD module in the frequency hopping pattern gen-eration. The method can meet the system design requirements.