| 基于三次样条插值实现无人机高动态运动轨迹插值 |
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| 引用本文： | 高晓,杨志强,库新勃,郑蓉.基于三次样条插值实现无人机高动态运动轨迹插值[J].全球定位系统,2020,45(1):37-42. |
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| 作者姓名： | 高晓 杨志强 库新勃 郑蓉 |
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| 作者单位： | 长安大学地质工程与测绘学院,陕西西安710054;中国电力工程顾问集团西北电力设计院有限公司,陕西西安710032;长安大学地质工程与测绘学院,陕西西安710054;中国电力工程顾问集团西北电力设计院有限公司,陕西西安710032 |
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| 摘 要： | 差分全球卫星导航系统（GNSS）技术辅助空中三角测量技术可实现无人机影像元素的高精度绝对定位．机载GNSS模块采样频率一般不超过50 Hz,更高的采样频率对GNSS模块软硬件提出更高的要求．本文基于三次样条函数实现无人机高动态定位的三维坐标插值,并通过实测数据检验三次样条函数的适用性,实验结果表明,固支样条更适用于无人机高动态运动轨迹坐标插值,当采样频率高于5 Hz时,平面插值精度优于1.0 cm,高程插值精度优于2.2 cm.
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| 关 键 词： | 无人机 高动态 三次样条 三维坐标 |
3D-coordinate interpolation for UAV high dynamic positioning based on cubic spline interpolation |
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| GAO Xiao,YANG Zhiqiang,KU Xinbo,ZHENG Rong.3D-coordinate interpolation for UAV high dynamic positioning based on cubic spline interpolation[J].Gnss World of China,2020,45(1):37-42. |
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| Authors: | GAO Xiao YANG Zhiqiang KU Xinbo ZHENG Rong |
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| Institution: | 1.College of Geological Engineering and Geomatics, Chang′an University Xi′an 710054, China2.Northwest Electric Power Design Institute Co., LTD, China Power Engineering Consulting Group, Xi′an? 710032, China |
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| Abstract: | Aerial triangulation, assisted by differential GNSS, is essential part of precise positioning of UAV image elements. As the sampling frequency of GNSS module usually does not exceed 50 Hz, higher sampling frequency would be a serious problem for software and hardware of UAV. In this paper, 3 D-coordinate interpolation for high dynamic positioning of UAV is realized based on cubic spline interpolation approach, whose applicability has been tested by real measurements. The experimental results show that clamped spline is more suitable for high dynamic interpolation of UAV. When the sampling frequency is higher than 5 Hz, plane interpolation accuracy is better than 1 cm and elevation interpolation is better than 2.2 cm. |
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| Keywords: | UAV high-dynamic cubic spline 3D-coordinate |
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