GPS辅助的被动成像导航系统的研究

本文介绍的是一种ＧＰＳ辅助的被动成像导航系统。该系统将ＧＰＳ接收机和被动成像传感器组合在一起，能提供完整的位置、速度、角速度和高度信息。在ＧＰＳ信息的辅助下，不仅解决了被动成像传感器所引起的高度／速度模糊问题，而且还大大简化了求解角速度的方程。本文给出了角速度估计和ＧＰＳ测量噪声对估计精度影响的理论分析和计算机仿真结果。仿真表明，即使在严重的ＧＰＳ测量噪声的影响下，运动参数仍可精确地计算出来。

Study of GPS Aided Passive Imaging Navigation System

A Global Positioning System(GPS)aided passive imaging navigation system is presented in this paper.The system combined with GPS receiver and passive imagining sensor can supply complete position,velocity,angular velocity and altitude information.With the GPS information available,not only the problem of the depth/speed ambiguity is solved,but also simpler equations of solving angular velocity. Also,this paper presents the estimation of angular velocity and impact of GPS measurement noise on the estimation accuracy by theoretical analysis and computer simulation results.It is shown that the motion parameter can still be accurately determined even under heavy impact of GPS measurement noise.