摘要
在2D雷达对中高空目标跟踪中,由于缺少高度信息,航迹精度会受到影响。本文根据已知的大地高信息,建立了两种高度估计模型,并在椭球模型下提出了一种迭代求解非线性方程的方法。在仿真中比较了两种高度估计模型的估计精度,分析了初始大地高的计算精度对高度估计的影响。而且由仿真结果可见,进行高度估计可以大幅度提高航迹精度。
While tracking an air target in 2D radar system,the track precision will be affected due to lack of the height information.In this paper,we investigate how to estimate the height in the case where the earth height is known.We first build two height estimation models,and then propose an iterative approach to the solution of nonlinear equations under the ellipse earth model.In the simulation,we compare the estimation precision of the two models for height estimation,and then analyze how the precision of initial earth height impacts the result of height estimation.The simulation results prove that the track precision is heightened through the height estimation.
出处
《指挥控制与仿真》
2011年第4期33-37,共5页
Command Control & Simulation
关键词
高度估计
坐标变换
估计精度
height estimation
coordinate conversion
estimation precision
