The Project Realization Of The MIMU Assists GPS Navigation

With developing of the national defense, the navigation system is widespreadday by day. But the volume and the weight of navigation system is the bottleneckof its uses. The MIMU (Micro-inertial Measurement Unit) assists GPS (GlobalPositioning System) navigation system is able to provide position and the speedinformation in superior accuracy. Also it is small, light and cheap. It has greatprospect in the military and civilian domain .Firstly this paper first introduces purpose and the significance of the MIMUassists GPS navigation. And then it introduces international research situation.And then software and hardware of the navascope is introduced. To MIMU,This paperanalyzes the technology of the MIMU. The error model equation is set up. Thedemarcate experiment of MIMU is studied. The demarcate scale coefficient ofthree-dimensional gyroscope and the coefficient of cross-coupling error, the scalecoefficient of three-dimensional accelerometer and cross-coupling error are allgiven. It applies method and theory of modeling of time series to make model ofAR for excursion of gyroscope. A new kind of navigation algorithm for slow andsmall range carriers is inferred in this paper. Its error transmission equationis also inferred. The solution of event time synchronization in integratednavigation is introduction. The kalman filter equation is inferred. Finally thesystem static experiment is introduced .And its result is analyzed.