Establishment and verification of theoretical model for underwater light-sheet Scheimpflug LiDAR system  

作　　者：Fei FENG Guojun WU Bo LIU Xu ZHAO Yafeng WU Jinghan XU 

机构地区：[1]Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China [2]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China(Technological Sciences)》2025年第1期50-57,共8页中国科学(技术科学英文版)

基　　金：supported by the Special Project of Strategic Leading Science and Technology of Chinese Academy of Sciences(Grant No.XDA22030201)。

摘　　要：The Scheimpflug imaging in the air can increase the depth-of-view and has been well studied with an accurate Scheimpflug imaging model.However,there is no corresponding underwater light-sheet Scheimpflug(ULSS)imaging model.As a result,imaging accuracy cannot be ensured in the design phase,which mainly relies on the post-calibration.In this paper,the ULSS imaging model is firstly established,which gives the relationship between the pixel number and target distance,as well as that between the target distance and range resolution.A new experimental bracket and an underwater Scheimflug imaging lens were designed and developed.Based on this new device,several experiments were carried out in a pool to study the range resolution of this ULSS LiDAR,by which the correctness of the imaging model was verified.It also shows that the newly designed ULSS LiDAR can achieve a millimeter-level resolution within 8 m.

关 键 词：underwater optical detection 3D detection range resolution Scheimpflug imaging LIDAR 

分 类 号：TN958.98[电子电信—信号与信息处理]