设计了基于跟踪微分器的单天线DGPS定向测姿方法,构造基于积分方法的跟踪微分器,并将其用于DGPS速度的滤波和微分处理,从而得到较精确的速度和加速度信息,通过对载体运动模型的分析和数学推导,得到计算载体姿态的方法。最后,给出了该方法在车载系统中的仿真,结果表明该方法可以提供有效的姿态信息,可以成为常规姿态测量系统的备份。

A single-antenna DGPS aiding attitude determination method was designed. A trackin-differentiator based on integral ap-proximation was constructed. Using the TD, the DGPS velocity data could be filtered to better precise velocity and be differed toprecise acceleration. By analyzing the kinetic model of body and establishing the mathematic model, the solution procedure of atti-tude determination using the velocity and acceleration of body was presented. In the end, the process of simulation of the solutionand the error of attitude curves in the simulation system were presented. Simulation results and relative conclusion were provided.The results show that the method provides a useful source of attitude information and consequently may be used as a backup atti-tude system in vehicle navigation.