We consider the influence of noise parameters of a 3D lidar and external background radiation on the error in estimating the relief signatures of distant objects from 2D field intensity distributions of the reflected radiation. A physical and mathematical model is developed to analyse the effect of noise. The dependence of the error in estimating the relief signatures at various signal-to-noise ratios is investigated taking into account the parameters of real multi-element photodetectors (MEPDs). The obtained results indicate the possibility of evaluating relief signatures of distant objects with high accuracy based on standard MEPDs simultaneously for a large number of points on the object’s surface with a signal-to-noise ratio of more than 4.

我们考虑了 3D 激光雷达的噪声参数和外部背景辐射对从反射辐射的 2D 场强分布估计远处物体的地形特征的误差的影响。开发了一个物理和数学模型来分析噪声的影响。考虑到真实多元素光电探测器 (MEPD) 的参数，研究了在各种信噪比下估计浮雕特征的误差依赖性。获得的结果表明，基于标准 MEPD 同时对信噪比超过 4 的物体表面上的大量点，以高精度评估远处物体的浮雕特征的可能性。