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利用MATLAB实现了激光测高仪回波信号分析。在激光测高仪回波信号是由多个高斯函数叠加的理论前提下,基于MATLAB平台,从回波数据中分解出每个有效的高斯分量,获取各个高斯分量的特征参数(中心位置、半宽和幅度)。在信号分析过程中,采用了平面曲线离散点集拐点的快速查找算法和Levenberg-marquardt拟合方法。文章通过实例证明,该算法对激光测高回波信号进行分析可以准确获得高斯函数的特性参数。
Using MATLAB to Realize Laser Altimeter Echo Signal Analysis. In the laser altimeter echo signal is a superposition of a number of Gaussian function under the premise of the theory, based on the MATLAB platform, from the echo data decomposition of each effective Gaussian component to obtain the characteristic parameters of each Gaussian component (center position, half Width and amplitude). In the process of signal analysis, a fast find algorithm and a Levenberg-Marquardt fitting method of inflection point of the plane curve discrete points are adopted. The example proves that the algorithm can obtain the characteristic parameters of Gaussian function accurately by analyzing the laser altimetry echo signal.