基于室内规范检定场的地面三维激光扫描仪检校技术研究

发布时间：2018-05-29 04:54

本文选题：三维激光扫描仪 + 误差分析　；参考：《山东科技大学》2017年硕士论文

【摘要】：地面三维激光扫描技术发展如此迅速,传统的点式数据采集已经不能满足人们追求高效采集数据的方式。短短十几年,便深入到各个行业领域,极大的.提高了工作效率。但是不能忽略在发展过程中存在的问题,面对之前众多厂家推出的地面三维激光扫描仪所提供的技术指标既没有统一说法,又没有统一标准而造成的混乱现状,我国于2013年5月发布的《JJF 1406-2013地面激光扫描仪校准规范》(以下简称《规范》)规定了静态地面激光扫描仪的校准方法。本文借助山东科技大学学术先进的硬件资源,结合《规范》对地面三维激光扫描仪性能参数的校准进行了研究。本文主要内容如下:(1)分析了目前三维激光扫描仪的技术背景、发展过程中面临的问题、国内外发展现状以及说明了本文研究的目的和意义。(2)通过对三维激光的分类、内部构造原理进行了详细分析,通过测量原理总结出了误差来源,并对相关误差进行了分类,结合误差来源对校准方法进行了总结,并深入研究了近年来的常用校准方法。(3)对《规范》中涉及的专用名词以及检校方法进行了解释,并对其中规定的检校装置进行了介绍。通过实验对地面三维激光扫描仪进行检定,首先通过对不同位置处的标靶进行扫描,求得径向距离示值误差,然后多次测量固定标靶的中心坐标,对三维激光扫描仪的径向重复性和标靶重复性进行了检定;最后通过构建相关检校场对不同距离和方位的标靶进行扫描并进行数据分析,对地面三维激光扫描仪的空间距离示值误差进行了校准,进一步测试三维激光扫描仪在实际测量中的综合性能,并进行了不确定度分析,与标称精度进行了对比,并对复检进行了简要分析(4)结合《规范》的颁布,对三维激光扫描仪的规范校准进行了充分展望。
[Abstract]:With the rapid development of 3D laser scanning technology, the traditional point data acquisition method can not meet the demand of high efficiency data acquisition. Just ten years, will go deep into the various industries, great. Improved working efficiency. However, we cannot ignore the problems existing in the process of development. In the face of the confusion caused by the technical indicators provided by the terrestrial 3D laser scanners introduced by many manufacturers before, there is neither a unified statement nor a unified standard. The Calibration Standard of JJF 1406-2013 ground Laser Scanner issued in May 2013 (hereinafter referred to as "Standard") prescribes the calibration method of static ground laser scanner. Based on the advanced hardware resources of Shandong University of Science and Technology, the calibration of 3D laser scanner performance parameters is studied in this paper. The main contents of this paper are as follows: (1) analyzing the technical background of the 3D laser scanner, the problems in the development process, the development situation at home and abroad and the purpose and significance of the research. The principle of internal structure is analyzed in detail, the source of error is summed up through the principle of measurement, the related error is classified, and the calibration method is summed up according to the source of error. In this paper, the commonly used calibration methods in recent years, I. e., the calibration method and the calibration method, are explained, and the calibration devices are introduced. The 3D laser scanner is verified by experiments. Firstly, the radial distance error is obtained by scanning the target at different positions, and then the center coordinates of the fixed target are measured many times. The radial repeatability and target repeatability of 3D laser scanner are verified. Finally, the targets with different distances and azimuth are scanned and analyzed by constructing relevant calibration fields. The spatial distance error of 3D laser scanner is calibrated, the comprehensive performance of 3D laser scanner in actual measurement is further tested, and the uncertainty is analyzed and compared with the nominal precision. A brief analysis of the reexamination is made. (4) based on the promulgation of the Standard, the calibration of the 3D laser scanner is fully prospected.
【学位授予单位】：山东科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P225.2

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