太阳影子定位  

The Location of the Sun's Shadow

作　　者：姬安召[1] 王玉风[1] JI An-zhao WANG Yu-feng(School of Energy Engineering, Long Dong University, Qingyang 745000, Gans)

机构地区：[1]陇东学院能源工程学院,甘肃庆阳745000

出　　处：《陇东学院学报》2017年第1期81-85,共5页Journal of Longdong University

摘　　要：太阳影子定位技术在视频数据分析中起着重要作用;采用天体运动中天球坐标系与地平坐标系之间的关系,建立杆影顶点的位置与杆高、太阳方位角与高度角的数学模型。根据视频拍摄的数据,以太阳方位角和高度角的方差之和最小为优化目标,将纬度、经度、时角和赤纬角视为变量。运用约束最优化算法进行求解,得出视频合理的拍摄时间和地点。The sun shadow positioning technology plays an important role in the analysis of video data.Based on the relationship between the celestial coordinate and the horizontal coordinate during the motion of heavenly bodies,the mathematical model of the vertex position of the rod shadow and the height of the rod,as well as model of the sun＇s azimuth and elevation angle is established.According to the data of video capture,and taking the minimum variance between the solar azimuth and altitude anglethe as optimization objective,the latitude,longitude,time angle and latitude angle are regarded as variables.The constrained optimization algorithm is used to solve the problem and to get a reasonable video shooting time and place.

关 键 词：天球坐标系 地平坐标系 太阳高度角 太阳方位角 赤纬角 时角 

分 类 号：TE230[石油与天然气工程—油气井工程]