Multi-spectral laser detection and ranging for range profiling and surface characterization
Multi-spectral laser detection and ranging for range profiling and surface characterization
复制标题
用于范围分析和表面表征的多光谱激光检测和测距
DOI：
10.1088/1464-4258/7/6/028
复制
发表时间：
2005
影响因子：
2.1
通讯作者：
R. Lamb
中科院分区：
文献类型：
--
作者：
A. Wallace;G. Buller;R.C.W. Sung;R. D. Harkins;A. Mccarthy;S. Hernandez;G. Gibson;R. Lamb
我们描述了一种新的多光谱系统的距离轮廓和表面特征的时间相关单光子计数（TCSPC）的基础上。该系统具有六个激光二极管源，其具有在630-972 nm范围内的离散波长，围绕接收施密特-卡塞格伦望远镜的孔径的圆周布置，该接收施密特-卡塞格伦望远镜将多波长返回聚焦到光纤上。单光子雪崩二极管用于检测由光学路由模块分隔的六个独立波长通道。我们还描述了两种方法，用于检测从传感器视场内的几个表面返回的光谱中的信号返回的数量，位置，高度和形状参数。第一种方法有两个主要阶段，非参数颠簸狩猎和最大似然估计使用泊松统计。最近，我们采用了可逆跳马尔可夫链蒙特卡罗方法，有可能更好地检测隐藏或密切重叠的回报。
We describe a new multi-spectral system for range profiling and surface characterization based on time-correlated single photon counting (TCSPC). This system has six laser diode sources with discrete wavelengths in the range 630–972 nm arranged around the circumference of the aperture of a receiving Schmidt–Cassegrain telescope that focuses the multiple wavelength return onto an optical fibre. Single photon avalanche diodes are used to detect the six independent wavelength channels, separated by an optical routing module. We also describe two methods for detecting the numbers, positions, heights and shape parameters of signal returns in the spectra returned from several surfaces within the sensor field of view. The first method has two principal stages, non-parametric bump hunting and maximum likelihood estimation using Poisson statistics. Recently we have adopted a reversible jump Markov chain Monte Carlo approach that has the potential for better detecting hidden or closely overlapping returns.