三坐标雷达目标真实高度估计算法研究

在目标跟踪领域,通过三坐标雷达的测量值(斜距、仰角及方位角)来估算目标的真实高度一直是个难点。目前主要有两类处理方法:坐标转换法和等效地球半径法。前者把与雷达天线相关的三坐标测量值转换到大地坐标系统来计算目标高度;后者充分考虑地球曲率以及大气折射的特性,通过增加地球半径来估算目标的高度。最后对上述的两类方法进行总结、比较与分析。

Study on True Altitude Estimation of 3-D Radar

In target tracking domain estimating the true altitude of a target from 3-D radar is always been a challenge. The algorithms can be classified as methods based on coordinate transformation and methods based on 4/3 earth-radius refraction model. The former try to estimate the altitude by transforming geodetic coordinates from 3-D Cartesian coordinates of a radar. The latter first research the properties of earth curvature and atmospheric refraction, then estimate the altitude by increasing the radius of the earth. In this framework, this paper reviews and analyses the two algorithms.