Engineering Realization of an Integrated Navigation System of SINS/GPS/ADS Based on Low Cost Gyro

A set of integrated airborne navigation system was designed based on low-cost MEMS gyro strap-down inertial measurement unit with supplementary of GPS and ADS for practical engineering application.Taking full consideration of the advantages and disadvantages of various sensors,we adopted error compensation technology in the system to guarantee its accuracy and reliability.The composition and function of the system were introduced.Based on which,a 29 dimensional dynamic state equation of integrated system was established.The error models of GPS and ADS were presented,which were used in Kalman filter.The result of precise three-axis turntable test showed that the integrated navigation can execute filter calculationcx in real time,improve the navigation parameter precision,thus it is suitable for practical application.