基于差分GNSS无人机航测系统在数字航测中的应用研究
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摘要
鉴于以往无人机航测系统的不稳定性造成POS精度不高,需要大量外业像控布设来辅助空三加密,耗费大量人力、物力和时间,处理效率不高。文中探讨分析引入差分GNSS,通过事后差分解算获取较高精度的POS数据,同时带入空三加密-平差过程,减少外业像控布设及提高内业处理效率的可行性。通过试验对比分析,引入差分GNSS,可以明显减少外业像控数量,提高加密点的提取精度,达到预期目标。
In view of the instability of the previous UAV aerial system caused by the poor accuracy of POS,the need for a large number of foreign companies like control layout to support the deployment of air-three encryption,cost a lot of manpower,material and time,processing efficiency was not high. In the paper,differential GNSS was discussed and introduced,through the post-differential solution to obtain high-precision POS data,while taking into the empty three encryption-adjustment process to reduce the field design and improve the efficiency of internal processing efficiency. Through the comparison and analysis of the experiment,the introduction of differential GNSS could significantly reduce the number of field control,improve the extraction accuracy of the encryption point to achieve the desired target.
In view of the instability of the previous UAV aerial system caused by the poor accuracy of POS,the need for a large number of foreign companies like control layout to support the deployment of air-three encryption,cost a lot of manpower,material and time,processing efficiency was not high. In the paper,differential GNSS was discussed and introduced,through the post-differential solution to obtain high-precision POS data,while taking into the empty three encryption-adjustment process to reduce the field design and improve the efficiency of internal processing efficiency. Through the comparison and analysis of the experiment,the introduction of differential GNSS could significantly reduce the number of field control,improve the extraction accuracy of the encryption point to achieve the desired target.
引文
[1]韩杰,王争.无人机遥感国土资源快速监察系统关键技术研究[J].测绘通报,2008(2):4-6.
[2]董龙,李涛.CCD成像模型及仿真系统研究[J].系统仿真学报,2009,21(14):4520-4527.
[3]宁津生,王正涛.2011-2012测绘学科发展研究综合报告(下)[J].测绘科学,2009,37(4):5-12.
[4]王志豪,刘萍.无人机航摄系统大比例尺测图试验分析[J].测绘通报,2011(7):18-20.
[5]袁修孝,高宇,邹小容.GPS辅助空中三角测量在低空航测大比例尺地形测图中的应用[J].武汉大学学报(信息科学版),2012,37(11):1289-1293.
[6]陈宇彤,邓权,黄绍美.GPS辅助空中三角测量在大比例尺地形图中的应用[J].测绘与空间地理信息,2010,33(3):63-65.
[7]邴媛媛.无人机遥感在某铁矿矿区资源监测中的应用[D].阜新:辽宁工程技术大学,2008.
[8]李德仁,袁修孝.误差处理与可靠性理论[M].武汉:武汉大学出版社,2012.
[9]CH/T 9008.3-2010基础地理信息数字成果1:500、1:1 000、1:2 000数字正射影像图[S].
[10]CH/T 9008.2-2010基础地理信息数字成果1:500、1:1 000、1:2 000数字高程模型[S].
[11]GB/T 7931-2008 1:500、1:1 000、1:2 000地形图航空摄影测量外业规范[S].
[12]GBT 23236-2009数字航空摄影测量空中三角测量规范[S].
[2]董龙,李涛.CCD成像模型及仿真系统研究[J].系统仿真学报,2009,21(14):4520-4527.
[3]宁津生,王正涛.2011-2012测绘学科发展研究综合报告(下)[J].测绘科学,2009,37(4):5-12.
[4]王志豪,刘萍.无人机航摄系统大比例尺测图试验分析[J].测绘通报,2011(7):18-20.
[5]袁修孝,高宇,邹小容.GPS辅助空中三角测量在低空航测大比例尺地形测图中的应用[J].武汉大学学报(信息科学版),2012,37(11):1289-1293.
[6]陈宇彤,邓权,黄绍美.GPS辅助空中三角测量在大比例尺地形图中的应用[J].测绘与空间地理信息,2010,33(3):63-65.
[7]邴媛媛.无人机遥感在某铁矿矿区资源监测中的应用[D].阜新:辽宁工程技术大学,2008.
[8]李德仁,袁修孝.误差处理与可靠性理论[M].武汉:武汉大学出版社,2012.
[9]CH/T 9008.3-2010基础地理信息数字成果1:500、1:1 000、1:2 000数字正射影像图[S].
[10]CH/T 9008.2-2010基础地理信息数字成果1:500、1:1 000、1:2 000数字高程模型[S].
[11]GB/T 7931-2008 1:500、1:1 000、1:2 000地形图航空摄影测量外业规范[S].
[12]GBT 23236-2009数字航空摄影测量空中三角测量规范[S].