Vehicle-mounted satellite receiver positioning system based on the MEMS gyro

摘要

To ensure that the vehicular satellite receiver get enough of their own real-time, accurate attitude information, considering the requirements low-cost, MEMS (Micro- Electron Mechanical System) inertial device is applied to the design of attitude positioning system for satellite receiver. Because of the low accurate degree, inertial navigation can't fully used to help receiver to produce parameter. This paper undertakes to make use of parameter of velocity and attitude produced by laser gyro navigation system that installed in the head of the vehicle as MEMS inertial positioning system external combination information resource. And to integrate the MEMS inertial positioning system in the model of combining velocity and attitude by using Sage-Hausa adaptive filtering algorithm to evaluate the error of inertial navigation system on line, and rectify its calculating result so as to improve its degree of accurate. Through numerous analogical grounds vehicle operation experiments, the MEMS attitude positioning could reach the degree of accurate requirements by satellite receiver, therefore the testing program is feasible.