基于DSP和FPGA的导航系统硬件平台设计  

Design of hardware platform for navigation system by using DSP and FPGA

作　　者：廖丹[1] 

机构地区：[1]武警工程大学装备工程学院,西安710086

出　　处：《电子测量技术》2017年第5期201-204,共4页Electronic Measurement Technology

基　　金：2014年获国家自然科学基金青年基金(41401520)资助项目

摘　　要：导航计算机是捷联惯性导航系统中的核心部件,主要完成初始对准和导航计算,通常由高性能、高精度的计算芯片构成。基于DSP和FPGA技术,设计应用于导航系统的导航计算机,通过时序控制和程序设计,解决了DSP芯片的自举引导、芯片之间通信、脉冲信号计数和导航计算等问题。通过长航时导航实验测量,电路能够长时间稳定工作,测量的陀螺计数误差小于e^(-10),导航实验速度误差小于±0.5m/s,最大的导航径向误差0.490 8nm,在24h内的导航精度达到0.5nm。平台能够提供精确快速的测量和计算数据,为惯性导航系统发挥重要作用。The navigation computer is designed for initial alignment and navigation computing in strap-down inertial navigation system （SINS）. It is the key part of system, and it is made up of chips with high performance and accuracy. By using DSP and FPGA technology, the circuit of navigation computer is designed. Through sequence control and program design, the problems of DSP boot-loading, communication, pulse signal counting and navigation computing are solved. According to long-time experimental test, the result shows that the computing error is less than e^10 and speed error is less than＋0.5 m/s. The maximum radial error is 0. 490 8 nm. And the navigation accuracy is 0.5 nm in 24 hours. The circuit suits the demand of real-time and accuracy for navigation computing. Therefore it is important to navigation .

关 键 词：数学平台 TMS320C6713 XC3S400AN 捷联惯性导航系统 脉冲信号计数 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计] TN965.8[电子电信—信号与信息处理]