基于光电测量平台的多目标定位算法  

Multiple-target localization based on electro-optical measurement platform

作　　者：徐诚[1] 黄大庆[1,2] 

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京210016 [2]南京航空航天大学无人机研究院,江苏南京210016

出　　处：《中南大学学报（自然科学版）》2015年第1期157-163,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(61106018);航空科学基金资助项目(20115552031)~~

摘　　要：为了提高空中对地面目标定位的效率,达到1次测量、多点定位的目的,提出一种基于光电测量平台的多目标定位方法。首先,建立大地坐标系、地理坐标系、载机坐标系、摄像机坐标系等7个坐标系及坐标系之间的转换关系。然后,根据目标定位过程中测量点、目标点、成像点的几何位置,结合载机姿态角、摄像机姿态角、激光测距、摄像机焦距等参数,推导出拍摄图像中任意像素点在摄像机坐标系中的坐标,并通过坐标变换进一步计算出目标点的经纬度、高度,从而实现多目标定位。利用光电测量平台对地面目标进行定位实验。研究结果表明:与传统的单目标定位相比,多目标定位不仅提高定位效率,而且能满足一定的定位的精度要求,具有较大的实用和推广价值。In order to improve the efficiency of air to ground target localization and achieve the effect of a time measurement and multi-point positioning, a multi-target localization algorithm on electro-optical measurement platform was proposed. First, 7 coordinate system such as geodetic coordinate system, geographic coordinate system, UAV body coordinate system and camera coordinate system, including the transfer relationship between them were established. Then based on the geometric position of measuring point, target point and image point, combining several parameters such as UAV attitude angle, camera attitude angle, laser range value and camera focal length, the position of any image point in camera coordinate system was deduced. And through coordinate transformation, the longitude, latitude and height of target point in the image can be calculated. Tested by experiments, multi-target localization can not only improve the efficiency, but also satisfy certain precision compared with the traditional single target localization, which has great practical and popularization value.

关 键 词：光电测量 多目标 目标定位 定位效率 

分 类 号：TH74[机械工程—光学工程]