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One method of making the low dynamic GPS receiver adapt to Vehicle's high dynamic environment and providing the vehicle's accurate position data through the velocity aiding information provided by INS during vehicle flying are discussed, and the results of ground dynamic simulation test carried out with the GPS satellite signal simulator are given. 论述了一种在载体飞行过程中利用惯导系统(INS)提供速度辅助信息,使低动态民用全球定位系统(GPS)接收机适应飞行器的高动态环境、对载体进行精确定位的一种方法,并给出了利用GPS卫星信号模拟器进行地面动态仿真试验的结果。 The problems met in high dynamic circumstances during estimating GPS signal parameters and detecting data transition are analyzed. The signal parameters are estimated through extended Kalman filter (EKF) algorithm. The pseudonoise (PN) code tracking through digital delay\|locked loop (DDLL) and carrier assistant technology are discussed. And a simple data transition detection and parameter correction method is studied emphatically. The tracking performance and tracking error of the algorithm are analyzed through... The problems met in high dynamic circumstances during estimating GPS signal parameters and detecting data transition are analyzed. The signal parameters are estimated through extended Kalman filter (EKF) algorithm. The pseudonoise (PN) code tracking through digital delay\|locked loop (DDLL) and carrier assistant technology are discussed. And a simple data transition detection and parameter correction method is studied emphatically. The tracking performance and tracking error of the algorithm are analyzed through simulation. The simulation shows that this data transition method conduces to improve the parameters estimation precision, and the algorithm dynamic performance is ameliorated too. 鉴于高动态环境中 G P S信号参数估计和调制数据跳变检测所遇到的问题,采用扩展卡尔曼滤波方法( E K F)对信号参数进行了估计,分析了通过载波辅助技术实现伪码延时估计的原理,重点研究了一种简单的数据跳变检测和估计参数修正方法。模拟结果表明这种方法在信号参数估计精度和动态跟踪性能等方面都能够满足高动态环境的要求。 In this paper,a deep research is made on the algorithm of high precision strapdown inertial navigation system (SINS) under highly dynamic situation and a new threeloop algorithm for SINS is proposed. This algorithm includes the attitude coning compensation and the velocity sculling as well as the rotation compensation. The mathematical models of updating the earth fixed coordinate frame,the navigation coordinate frame and the body coordinate frame are given in this paper,and the mathematical models of the above... In this paper,a deep research is made on the algorithm of high precision strapdown inertial navigation system (SINS) under highly dynamic situation and a new threeloop algorithm for SINS is proposed. This algorithm includes the attitude coning compensation and the velocity sculling as well as the rotation compensation. The mathematical models of updating the earth fixed coordinate frame,the navigation coordinate frame and the body coordinate frame are given in this paper,and the mathematical models of the above three effects are also given.The computer simulation for this algorithm is taken and the result is shown in the end. 对高动态环境下的高精度捷联惯性导航系统的算法进行了深入研究。文中提出了一种新的三回路捷联惯导算法 ,该算法具有姿态圆锥补偿和速度的划船效应和转动效应补偿。文中推导出了三回路算法中的导航系、机体系和地球系更新的数学模型。给出了姿态圆锥补偿、速度划船效应和转动效应的数学模型。并对该算法进行了仿真研究 ,最后给出了计算机仿真结果
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