海上风电平台的BDS/GNSS形变监测分析

Analysis on BDS/GNSS deformation monitoring of offshore wind power platform

监测海上风电平台的形变对于确保其安全运营具有重要意义。利用海上风电平台采集的BDS/GNSS观测数据,分别采用相对定位和精密单点定位(PPP)方法,对BDS2/3、GPS和BDS2/3+GPS等3种方案用于海上风电平台形变监测的精度进行了分析。结果表明,基于BDS2/3+GPS双系统的相对定位结果在N、E、U 3个坐标方向上的标准差均优于2 mm,相较于BDS2/3和GPS单系统精度有所提高,水平方向精度平均提升约7%,高程方向精度提升更为明显,达到约28%;基于BDS2/3+GPS双系统的PPP结果在水平方向上的标准差优于2 mm,与相对定位结果精度相当,但在高程方向上的标准差达到8 mm左右。

Monitoring the deformation of offshore wind power platforms is of great significance to ensure their safe operation.Using the BDS/GNSS observation data collected on offshore wind power platform,the accuracy of three schemes,BDS2/3,GPS and BDS2/3+GPS,for deformation monitoring of offshore wind power platform are analyzed with the relative positioning and precise point positioning(PPP)methods,respectively.The results show that the standard deviations of the relative positioning results based on BDS2/3+GPS are all better than 2 mm in the N,E and U coordinate directions.Compared with BDS2/3 and GPS single system,the accuracy of the relative positioning results is improved.The accuracy of the horizontal direction is improved by about 7%on average,and the accuracy of the elevation direction is improved more obviously,reaching about 28%.The standard deviation of PPP results based on BDS2/3+GPS dual system is better than 2 mm in the horizontal direction,which is equivalent to the relative positioning results,but the standard deviation in the elevation direction is about 8 mm.