摘要
针对现有无人机单频GNSS天线性能良莠不齐从而影响单频RTK性能的问题,选取了4种无人机单频GNSS天线,基于UBLOXM8T模块采集4种天线在不同观测环境下的单频观测数据;分析其双差伪距观测值的精度以及对整周模糊度的初始化时间的影响。分析结果表明:不同天线的伪距噪声差异较大,直接影响模糊度的初始化时间;选择合适的GNSS天线是无人机高精度定位的关键。
In order to conquer the problem that the performance of single-frequency GNSS RTK would be affected by the different UAV GNSS antennas,four UAV single-frequency GNSS antennas were selected for analysis.Based on UBLOX M8T module,single-frequency observation data of four antennas in different observation environments were collected.The accuracy of the double-difference pseudo-range observation and its influence on the initialization time of the integer ambiguity were analyzed.The results show that the pseudo-range noise is related to antenna type,which directly affects the initialization time of the ambiguity,and the GNSS antenna plays the key role in the high-precision positioning of UAV.
作者
刘星
石俊炯
罗浩
李安然
LIU Xing;SHI Junjiong;LUO Hao;LI Anran(College of Civil Engineering,Chongqing University,Chongqing 400045,China;Beidou Navigation Engineering Center,Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400714,China;Chongqing Institute of Metrology and Quality Inspection,Chongqing 401121,China)
出处
《测绘科学技术学报》
北大核心
2019年第1期1-5,共5页
Journal of Geomatics Science and Technology
基金
国家重点研发计划项目(2017YFF0212001)
重庆市人工智能技术创新重大主题专项重点研发项目(cstc2017rgzn-zdyfX0003)
