基于DSP平台的GPS信号跟踪程序优化  

Optimization of Tracking Program Based on the DSP TMS320C6416 Platform

作　　者：周玮[1] 王博[1] 刘建[1,2] 贺智轶[1] 

机构地区：[1]武汉理工大学信息工程学院,武汉430070 [2]中国交通通信中心,北京100011

出　　处：《武汉理工大学学报》2009年第17期135-137,152,共4页Journal of Wuhan University of Technology

基　　金：湖北省科技攻关计划(2007AA101C05)

摘　　要：为解决GPS基带信号处理中对实时跟踪的要求,提出了DSP软件优化流程。通过浮点定点转换、减少库函数调用开销、采用软件流水线技术和编译器选项优化等几种优化技术,在TMS320C6414定点DSP平台上实现了GPS实时跟踪运算。通过比较代码优化前后的时间消耗与精度,对比分析了软件优化后的执行效率。结果表明,优化后完全能满足跟踪运算的实时性要求,同时也提高了整个系统的稳定性。In this paper, we propose a software optimization procedure for satisfying GPS signal real-time tracking requiremeat in GPS base-band signal processing. For GPS signal real-time tracking realization based on DSP TMS320C6416 platform, this has been achieved by using some techniques such as transforming float-point to fixed-point, reducing the function call cost, software pipelining, and compiler option optimization. After that, the executing efficiency analyze is given by comparing time consuming and precision. The optimization presented in this paper can realize the real-time tracking, and also enhances the stability of the entire system,

关 键 词：DSP 优化 软件流水 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]