摘要
针对海岸带和海岛(礁)稀少控制区域的摄影测量定位问题,结合海道测量学理论,提出了一种潮汐模型支持下的光束法区域网空中三角测量方法。该方法首先根据摄影时间利用精密潮汐模型计算摄影瞬间水边线上各点的高程值,然后引入水边线上这些高程已知的点,和其他控制点以及连接点一起参加平差,精确确定摄影时影像的空间方位。实验表明,该方法能够提高海岸带和海岛(礁)稀少控制区域岛(礁)、滩涂等要素的几何定位精度。
Aiming at the photogrammetric positioning of sparse control coastal and islands areas,and combined with hydrographic theory,the bundle triangulation method supported by the tidal model was proposed.Firstly,the instant elevation of each point on the waterline at photography was obtained based on time-use photographic and precision tidal model in this method.Secondly,those points that the elevation was known on the waterline,and other control points and connection points,were introduced to join the adjustment to precisely determine the spatial orientation of the photography.And the experimental results showed that the method was able to improve the geometric positioning accuracy of reefs,beaches and other elements in coastal zone and islands scarce control area.
出处
《测绘科学技术学报》
北大核心
2012年第1期33-37,共5页
Journal of Geomatics Science and Technology
基金
国家自然科学基金资助项目(41101396)
