解析Brown模型波形参数的最小二乘估计

Least Square Estimation of Waveform Parameters of Analytical Brown Model

Brown回波模型是描述传统雷达高度计的基本模型，它对于获取高精度的海面高具有重要作用。本文在解析Brown模型的基础上，推导获得了最小二乘估计中关于五个波形参数的具体公式。在相同的仿真数据条件下，以海面高改正值为比较对象，通过与中科院空间中心的计算结果比较，表明其互差在mm级。

The Brown waveform model is the basic one that describes the traditional radar altimeter, which is critical to obtain high accuracy sea surface height. Based on the analytic Brown model, the paper derives partial derivatives for five wave- form parameters. Using the same simulation data, the paper compares the sea level height correction value to the results from Space Centre of Chinese Academy of Sciences, and it shows that the differences are in the order of millimeters.