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首页> 外文会议>International Society for Photogrammetry and Remote Sensing Congress >INFLUENCE OF GPS DATA FIXED DURING THE FLIGHT FOR AERIAL SURVEY AND AERIAL TRIANGULATION
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INFLUENCE OF GPS DATA FIXED DURING THE FLIGHT FOR AERIAL SURVEY AND AERIAL TRIANGULATION

机译：GPS数据在飞行期间对空中调查和空中三角测量的影响

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Modern aerial surveying systems content GPS receivers. It allows to fix co-ordinates of projection centers (exposure stations) during the flight. Theoretical model of mutual connection between the center of GPS receiving antenna and aerial camera in case of air carriers tilt is considered in the first part of the paper. As conclusions it is underlined that for accurate determination of co-ordinates of projection center the angles of aircraft tilt and angles of camera tilt have to be known. Several ways for solution of this task are proposed. In the second part of paper the theoretical bases of analytical aerial triangulation in case of known co-ordinates of projection centers (aerial triangulation and terrestrial triangulation). Difference between already existing methods and proposed method is that in last case the control points are not needed at all. At first sight, it is paradoxical conclusion because when linear elements of exterior orientation are known, angles of aerial image tilt can be arbitrary. For solution of this problem it is proposed to use photogrammetric connections which exist between all images of several flight strips. In the third part of paper the results of testing of the aerial triangulation method using block of model images are shown. Investigations are implemented for three variants of control network Objective accuracy evaluation has corroborated rightness of the theoretical aspects and allowed to recommend method for practical application.
机译：现代空中测量系统内容GPS接收器。它允许在飞行期间修复投影中心（曝光站）的协调。在纸张的第一部分中考虑了在空气载体倾斜的情况下，GPS接收天线和空中摄像机中心之间的相互连接的理论模型。随着结论，它强调，为了准确确定投影中心的坐标的坐标，必须知道飞机倾斜和相机倾斜角度的角度。提出了解决此任务的几种方法。在纸张的第二部分中，在已知的投影中心（鸟瞰三角测量和地面三角剖影）的情况下，分析鸟类三角测量的理论基础。已经现有方法和所提出的方法之间的差异是在最后一个情况下，根本不需要控制点。乍一看，它是矛盾的结论，因为当已知外向的线性元件时，空中图像倾斜的角度可以是任意的。对于解决此问题的解决方案，建议使用几个飞行条的所有图像之间存在的摄影测量连接。在纸张的第三部分中，示出了使用模型图像块的空中三角测量方法的测试结果。对控制网络客观准确性评估的三种变体实施了调查具有理论方面的正确性，并允许推荐实际应用方法。

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