摘要
针对中高精度惯性导航系统中,陀螺仪和加速度计输出信号精度高、随机漂移小、动态范围大等特点,设计并实现了1种基于TI公司TMS320C6713B型DSP和Spartan-ⅡE系列XC2S50E型FPGA的高精度惯导系统信号处理平台。在简要介绍平台总体设计的基础上,重点探讨了A/D采集模块的硬件电路以及时序逻辑设计,关键硬件电路的接口设计、DSP工作流程和导航数据存储读写设计。该平台具有设计简洁、数据采集精度高、实时性强、数据接口方便的优点;A/D有效位采集精度约18位,接近ΔΣ型ADC ADS1278实际支持的18位有效位精度;非常适用于惯性导航、组合导航等多通道同步信号处理系统。
Since the middle-and-high inertial navigation system has characterized by high precision,small random drift,and wide dynamic range of gyroscope and accelerometer output signal,a high-precision inertial navigation signal processing platform was designed and implemented based on TI high-performance floating-point digital signal processor TMS3206713B and Spartan-ⅡE series XC2S50E FPGA.Firstly,the paper briefly introduced the design of the system.Then it discussed the hardware electrocircuit and timing logic design of A/D sampling module,the interface design of key electrocircuit,the working flow of DSP,and the read-write of navigation data.The platform has the merit of the simplifying design,high precision of data acquisition,excellent real-time performance,and good interface.Its effective accuracy of is near to 18 bits,which is almost close to the practical effective accuracy of delta-sigma ADC ADS1278.The system is suitable for the multichannel synchronous signal processing system in inertial navigation,integrated navigation,and so on.
出处
《电子测量技术》
2011年第8期36-40,71,共6页
Electronic Measurement Technology
基金
国防预研支撑项目(40404)
总装科研创新团队基金资助
