Currently,most reference stations of the satellite continuous operation reference station(CORS)system in cities have installed radomes to protect the antenna.However,the research on the impact of radomes on the observations and reference station coordinates is relatively insuffi-cient.To solve the problem of significant deviation in the network RTK elevation measurement based on Guangzhou CORS(GZCORS),on the basis of the observation station data from 2016 to 2021,as well as the analysis of the observation data quality and positioning effect before and after the removal of the reference station antenna radomes,the impact of antenna radome on GNSS ob-servation values and elevation positioning accuracy is well-studied,and static station RTK positio-ning and urban vehicle kinematic positioning tests are conducted to verify.The results show that the antenna radome can increase the multi-path effect of the original observation values to a certain extent,reduce the data availability by about 10％,and produce a systematic deviation of 1～14 cm in the elevation positioning results of the reference station,thereby affecting the user's RTK eleva-tion positioning effect.The positioning results show that after removing the reference station an-tenna cover,the horizontal positioning accuracy root mean square(RMS)error of RTK based on GZCORS is about 1 cm,and the elevation positioning accuracy RMS is about 2 cm.The RMS of vehicle kinematic positioning accuracy in urban scenes is 15～20 cm,meeting the lane level positio-ning performance.
维普
万方数据
