采用高速FIFO和双CPU的光纤陀螺捷联系统  

FOG strapdown inertial navigation system based on high-speed FIFO and double CPUs

作　　者：高延滨[1] 曾建辉[1] 孙华[1] 常云萍 

机构地区：[1]哈尔滨工程大学自动化学院,哈尔滨150001

出　　处：《电光与控制》2007年第6期173-175,188,共4页Electronics Optics & Control

基　　金：哈尔滨工程大学基础研究基金资助

摘　　要：在光纤陀螺构成的捷联惯导数据采集系统中,采用了双CPU结构的工作模式,用高速FIFO作为数据交换桥梁。采用FPGA+DSP构建系统,DSP用于捷联算法解算,FPGA用于DSP与各类传感器之间的接口,并用软FIFO成功解决了系统中断不够用的问题。最后对光纤陀螺进行了专项测漂与标定,验证了该系统的数据采集和传输的正确性和可靠性。The FOG strapdown navigation system is small and need a large a mount of real - time computation. DSP is high - efficient, high - speed and is very suitable for efficient data processing. FPGA has the advantages of short development cycle, low - cost and easily repeated erasure/programming. We used two CPUs in FOG strapdown inertial navigation system, and FIFO is used as data exchange bridge. The data collection sysface between DSP and the sensors. The problem that the interruptions are not enough is solved by soft FIFO. Drift measurement and calibration were carried out for FOG by experiments, and the correctness and reliability of data collection and transmission were verified.

关 键 词：光纤陀螺 捷联惯导 数据交换 FPGA FIFO 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计] TP241.5[自动化与计算机技术—检测技术与自动化装置]