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太阳影子定位模型 预览

The Solar Shadow Positioning Model
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摘要 根据某处实际测量得到的直杆影子数据,建立地球坐标系和天球坐标系,引入太阳高度角、赤纬、太阳时角、时差等参数变量的关系并加入Bourges算法和影长、太阳方位角之间的关系,建立数学模型。得出的模型用软件仿真,与实际的影子变化进行对比,再用曲线拟合,根据已知数据求得不同地点的位置。由于为多变量优化问题,所以时间测量点虽然唯一,但符合要求解不唯一,即直杆所处的可能地点为北纬19.21,东经108.43,该地点在海南,或者为南纬3.9412°,东经137.3°,该地点在为印度尼西亚纳比雷附近。通过减少已知量,仅使用直杆在水平地面上的太阳影子顶点坐标对模型进行改进,求得第二次曲线拟合后符合要求的点。 According to the actual measurement to get somewhere rods shadow data,establish the earth coordinate system and the celestial coordinate system,introducing the Angle of the sun,declination,and when the sun Angle,of variable parameters,such as the time difference,and join the Bourges algorithm and the relationship between the solar azimuth,mathematical model is established.With that model with the software simulation,compared with the shadow of the actual change.Secondly using curve fitting based on the location of the known data obtained at different sites.Due to the multiple variable optimization problem,so not sure the actual point.Namely,straight rod may place for north latitude and19.21east longitude108.43change locations in hainan.Or to3.9412degrees south latitude,137.3degrees east longitude.The place near the nabi ray for Indonesia.Finally by reducing the known quantity,use only the rods in the sun shadow vertex coordinates on a level surface to improve the model,obtained the corresponding points.
作者 赵雪圻 张峻康 Zhao Xueyin;Zhang Junkang;Department of Electrical Engineering and Information Technology, Shandong University of Science and Technology;
出处 《科技创新导报》 2017年第12期27-28,共2页 Science and Technology Consulting Herald
关键词 太阳高度角 影子长度变化曲线 拟合函数求参数 阴影轨迹定位 Solar altitude angle Shadow length change curve Fitting function to find parameters Shadow location
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