| 刘凯,周建新,刘永,曾平,辛旺,刘岢,赵子仪.消费型无人机航测免像控多时序正射图精度分析[J].南华大学学报(自然科学版),2022,(5):71~78.[LIU Kai,ZHOU Jianxin,LIU Yong,ZENG Ping,XIN Wang,LIU Ke,ZHAO Ziyi.Accuracy Analysis of Multitemporal Image-free Orthographic of Consumer Aerial Survey[J].Journal of University of South China(Science and Technology),2022,(5):71~78.] |
| 消费型无人机航测免像控多时序正射图精度分析 |
| Accuracy Analysis of Multitemporal Image-free Orthographic of Consumer Aerial Survey |
| 投稿时间：2022-04-03 |
| DOI：10. 19431/ j. cnki. 1673-0062. 2022. 05. 010 |
| 中文关键词: 免像控 无人机摄影测量 多时序 仿地飞行 平面精度 |
| 英文关键词:image-free control UAVphotogrammetry multi-timing imitationflight plane accuracy |
| 基金项目:湖南省教育厅重点项目(212A0272) |
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| 中文摘要: |
| 现场试验设置3种仿地飞行航高,使用消费型无人机DJIPhantom 4RTK依次完成每种航高下的6期现场航摄,采用PhotoScan软件生成了18期免像控正射影像图；利用检查点对所有正射图进行精度评估,主要分析了3种航摄高度、测区高程变化对免像控正射图精度的影响。结果表明:使用DJI Phantom 4 RTK消费型无人机摄影测量得到的免像控正射图精度为厘米级。无人机相同航高下免像控多时序正射图最佳精度为0.76 cm,波动较小；不同仿地航高下精度均优于2 cm,无明显差异；测区不同高程部分的正射图精度并不一致,测区高程突变处正射图精度会降低。 |
| 英文摘要: |
| In this paper, three kinds of imitation flight altitudes are set, and the 6 phases of on-site aerial photography under each altitude are completed in turn by using consumeraerial DJI Phantom 4 RTK, and 18 phases of image-free orthophoto images are generated by PhotoScansoftware; the accuracy assessment of all orthophotos is carried out by using checkpoints, and the effects of the elevation changes of the three kinds of aerial photography altitude and measurement area on the accuracy of image-free orthophotos are mainly analyzed. The results show that The accuracy of the image-free orthophotography obtained by using consumer UAV photogrammetry is centimeter-level. The optimal accuracy of the orthophoto map of the same elevation and multi-time series image-free control of the DJI Phantom 4 RTK UAV is 0.76 cm, and the fluctuation is small; the accuracy of the orthophoto at different imitation altitudes is better than 2 cm, and there is no obvious difference; the accuracy of the orthophoto map in different elevation parts of the measurement area is not consistent, and the accuracy of the orthophoto map at the elevation mutation of the measurement area will be reduced. |
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