MEMS-IMU/GPS组合导航系统仿真研究  

Simulation of MEMS IMU and GPS Integrated Navigation System

作　　者：宋玉珍[1,2] 刘炼[1] 

机构地区：[1]91550部队91分队 [2]海军航空工程学院研究生一队

出　　处：《雷达科学与技术》2010年第4期301-305,共5页Radar Science and Technology

摘　　要：微电子机械系统(MEMS)是指可以批量制造的,集微型结构、微型传感器以及信号处理电路、接口、通信和电源于一体的微型器件。MEMS惯性测量单元是采用MEMS技术研制的加速度计和陀螺组合器件,它具有体积小、成本低、可靠性高等优点。首先介绍了微机电惯性测量单元(MEMS-I MU)的发展情况,总结了I MU的基本工作原理;随后对I MU中的主要误差源微机电陀螺进行了统计建模;最后以位置和速度信息为观测值将MEMS-I MU与GPS进行组合导航,并进行了仿真实验,由实验结果可以得出结论:MEMS-I MU不能单独构成导航系统,而与GPS组合后的导航系统精度可以满足一般的导航需求。Micro electronic mechanical systems（MEMS） are integrative micro-device systems that consist of micro-structure,micro-sensor,micro-actuator,signal processing circuit,interface,communication interface and electrical source.MEMS inertial measurement unit is an accelerometer and gyroscope combination device,developed by using MEMS technology.It has small volume,low cost and high reliability.Basic development situation and principle of inertial measurement unit of micro electronic mechanical systems are firstly introduced in this paper,after which the main error sources of IMU,that is the micro electronic mechanical gyro,is modeled.Finally,with positional and velocity information used as measurements,a MEMS-IMU and GPS integration system is established,and then corresponding simulations are done.From the simulation results we can see that a single MEMS-IMU can not be used to establish a navigation system,while when integrated with GPS the system will work well for a low precision navigation system.

关 键 词：微电子机械系统 惯性测量单元 惯性导航 组合导航 

分 类 号：TN967.1[电子电信—信号与信息处理]