高精度光纤陀螺捷联系统设计

以高精度光纤陀螺捷联系统为研究对象,提出了基于仿真的系统总体设计方法,分析了高精度光纤陀螺捷联系统设计中的关键技术,重点对轨迹发生器的设计、卡尔曼滤波器中状态变量的确定原则、滤波器中外部辅助信息的利用,以及卡尔曼滤波器在初始对准中的应用进行了研究,并选取不同状态变量、不同的组合导航工作时间、单位置和双位置对准等几种情况的仿真进行了对比分析,仿真结果表明:卡尔曼滤波器是系统总体设计的主题,它与载体的机动特性、组合导航工作模式、器件精度等是密不可分的.

Design of high precision fiber optic gyro strapdown system

Referring to the object of high precision fiber optic gyro(FOG) strapdown inertial navigation system,the overall system design method based on the simulation is put forward.The key technology of FOG strapdown system design is analyzed.The design of body movement trajectory,the choose rule of Kalman filter variable state,the management of external assistant information and the application of Kalman filter in the initial ground alignment are emphasized to study.The simulation example of different filter variable state,the different integrated navigation time,one position ground alignment and two position ground alignment are compared.The result indicates that the topic of the system design is Kalman filter which ties up the dynamic characteristic,the integrated navigation mode and the inertial instrument accuracy level.