基于高性能DSP和高精度A/D的导航计算机系统  

Navigation computer system based on high performance DSP and high precision A/D

作　　者：刘育浩[1] 黄新生[1] 谭红利[1] 

机构地区：[1]国防科学技术大学机电工程与自动化学院

出　　处：《中国惯性技术学报》2008年第2期140-143,共4页Journal of Chinese Inertial Technology

基　　金：兵器预研基金项目(2020203)

摘　　要：为提高某型号低成本捷联惯性导航系统的性能,设计了一套高性能导航计算机系统。研究了目前导航计算机系统的发展情况,针对各种方案的优缺点,以高性能数字信号处理器TMS320C6727(DSP)、现场可编程门阵列(FPGA)和高精度模数转换器件(AD)为核心,设计了一套高精度数据采集、硬件数字滤波和实时信号处理的高性能导航计算机系统。该方案的实验结果表明,在约100 s的跑车时间内,纯惯导位置误差为10 m;此设计方案满足了捷联惯性导航系统小型化、低功耗、低成本和实时性要求的要求,提高了捷联惯导系统的精度。A high-performance navigation computer system was designed to improve the performance of a strapdown inertial navigation system （SINS）. The present development of navigation computer system was studied. Considering the advantages and disadvantages of various schemes, and based on high-performance Digital Signal Processor（DSP） TMS320C6727, Field Programmable Gate Array （FPGA） and high-precision analog-to-digital converter （ADC）, a high-precision data-sampling, hardware digital filtering and real-time signal processing scheme was designed, which satisfies the requirements of SINS, including small size, low power, low cost and high precision. Experimental results show that the position error of pure inertial navigation is about 10 m in the test process of about 100 s. The scheme can improve the precision of the navigation system and enhance the system＇s real-time performance.

关 键 词：导航计算机系统 数字信号处理器 现场可编程门阵列 高精度数据采集 

分 类 号：U666.1[交通运输工程—船舶及航道工程]