| 球面三角形法在数字天顶仪中的应用 |
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| 引用本文： | 刘先一,周召发,张志利,张新帅.球面三角形法在数字天顶仪中的应用[J].大地测量与地球动力学,2015,35(4):726-728. |
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| 作者姓名： | 刘先一 周召发 张志利 张新帅 |
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| 作者单位： | 第二炮兵工程大学，西安市同心路2号，710025 |
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| 摘 要： | 对测站点位置坐标进行解算时一般采用传统的切平面法，但切平面法的定位精度会因恒星测量误差等干扰而快速降低，并且数据的收敛速度较慢。采用球面三角形法，充分利用恒星影像的坐标信息，提高了定位精度和解算结果的收敛速度。
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| 关 键 词： | 数字天顶仪 球面三角形法 定位精度 收敛速度 |
| 收稿时间： | 2014-07-10 |
The Application of Spherical Triangle Method in Digital Zenith Camera |
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| LIU Xianyi,ZHOU Zhaofa,ZHANG Zhili,ZHANG Xinshuai.The Application of Spherical Triangle Method in Digital Zenith Camera[J].Journal of Geodesy and Geodynamics,2015,35(4):726-728. |
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| Authors: | LIU Xianyi ZHOU Zhaofa ZHANG Zhili ZHANG Xinshuai |
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| Institution: | The Second Artillery Engineering University, 2 Tongxin Road, Xi’an 710025, China |
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| Abstract: | The tangent plane method is often used to calculate the astronomical coordinates of the target point. However, star error can affect the the precision of orientation easily. Moreover, the method is relatively slow. In order to improve the precision of the target point, we introduce a new method of spherical triangle, which can make full use of the star information. Thus, both precision and the speed are improved. |
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| Keywords: | digital zenith camera spherical triangle precision of orientation convergence speed |
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