基于DSP的实时跟踪系统的软件优化策略

由于TMS320C6000系列DSP具有独特的超长指令字(VLIW)结构,芯片硬件功能能否充分发挥很大程度上依赖于软件的执行效率.因此,在用DSP进行实时跟踪系统的设计时,软件的执行效率将直接影响系统的实时性.笔者深入研究了基于DSP的视频跟踪系统中软件优化的方法,包括编译器选项的设定、DSP关键字和内联函数的使用、数据打包处理以及软件流水技术.利用这些方法对系统的软件进行优化,解决了系统在处理过程中实时性差的问题,从而提高了整个系统的稳定性.

Methods of Software Optimization in Real-time Tracking System Based on DSP

The DSP(digital signal processor) of TMS320C6000 series,has a special structure VLIW(very long instruc-tion word),which makes the functions of hardware depend on the efficiency of software.Therefore,when DSPs of thisseries are used to design a real-time tracking system,the executing efficiency of software will directly affect the real-timespeciality of the system.Several methods of optimizing software based on C6000 DSPs are researched,including choo-sing compiler options,use of DS Pkey words and intrinsics,data packed and software pipelining.Optimizing software ofthe whole system by using these methods,primely can solve the problem of bad real-time in processing.Consequently,the stability of the whole system is improved.