GNSS导航信号仿真中运动轨迹设计  

Motion Trajectory Design for GNSS Signal Simulator

作　　者：李俊毅[1] 孙倩[2] 李军正[1] 

机构地区：[1]解放军信息工程大学导航与空天目标工程学院,河南郑州450002 [2]解放军信息工程大学训练部,河南郑州450002

出　　处：《海洋测绘》2013年第6期26-28,38,共4页Hydrographic Surveying and Charting

摘　　要：GNSS信号仿真器模拟GNSS信号时需要提供轨迹数据,要求轨迹数据连续、平滑且二阶可导。要满足上述条件,传统的方式通常是对轨迹进行分段仿真,设置仿真轨迹的时候较为复杂,在仿真高动态载体时,还常常会出现轨迹不平滑的现象。为此提出采用三次样条插值的方法来仿真载体轨迹,既满足GNSS信号仿真器对轨迹数据的要求,又保证与真实轨迹的相似性。While GNSS Signal Simulator is simulating GNSS signals, continuous smooth and second order derivable trajectory data are needed. In order to meet the above requirements, the trajectory is always simulated in segment with the traditional method, which is very complicated in setting the trajectory. Moreover, when simulating high-dynamic carriers, the trajectory may not be smooth. In this paper the cubic spline interpolation method is used to simulate the vehicle and vessel trajectory, which can fulfill GNSS simulator＇ s demand for trajectory data and guarantee the similarity with real trajectory.

关 键 词：轨迹仿真 三次样条 GNSS信号仿真器 

分 类 号：P228[天文地球—大地测量学与测量工程]