基于GPS/电子罗盘的测姿定位系统

摘要

For the background of MEMS-IMU/GPS / electronic compass integrated navigation system, proposing and designing an attitude-measuring and positioning system based on GPS / electronic compass. Aiming at that those Gyro may start after a long time to be stable, and high-speed gyro ball, wear, and gyro ball always comes with high rotation-speed, large abrasion, short life-span, high price and many failures and so on, this design combines GPS with electronic compass, so that we can make full use of a variety of sources of information to complement each other, which constitutes a redundant and high-precision navigation and positioning system with the characters such as high accuracy, stability, small size, easy to operate and so on. The system uses micro-C8051F021 single chip as a CPU, low power iTrax03-02 as GPS receivers. HMR3300 digital compass to provide attitude information, through the serial communications, so that it can achieve real-time attitude-measuring and positioning.%以MEMS-IMU/GPS/电子罗盘组合导航系统研究为背景,提出并设计了一种基于电子罗盘/GPS的测姿定位系统；针对电罗经启动后要较长时间才能稳定,而陀螺球转速高、磨损大、寿命短等问题,将GPS与电子罗盘组合,利用多种信息源相互补充,构成了一种有多余度和高精度的导航定位系统,具有高精度、稳定、小型化、易操作等特点；该系统利用微型单片机C8051F021作为中央处理器,功耗极低的iTrax03-02作为GPS接收机,数字罗盘HMR3300提供姿态信息,通过串口通信,从而实现实时测姿定位功能.