基于GPS与GLONASS信噪比反演海平面高度研究  

Study on Sea Level Height Inversion Based on GPS and GLONASS Signal-to-Noise Ratio

作　　者：周秀一 王井利 ZHOU Xiuyi;WANG Jingli(School of Traffic Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Satellite Applied Lechnology Center of Liaoning Natural Resources Affairs Service Center,Shenyang 110031,China)

机构地区：[1]沈阳建筑大学交通工程学院,辽宁沈阳110168 [2]辽宁省自然资源事务服务中心卫星应用技术中心,辽宁沈阳110031

出　　处：《测绘与空间地理信息》2023年第5期124-127,共4页Geomatics & Spatial Information Technology

摘　　要：为研究GPS和GLONASS各波段反演海平面高度中精度及时间分辨率等问题,选取SC02站2019年124—130年积日GPS L_(1) L_(2)波段及GLONASS G_(1) G_(2)波段SNR数据,采用多项式方法分解复合信号得到反射信号,利用LSP进行频谱分析,反演得到海平面高度。以该站附近验潮仪数据为真值,对GPS及GLONASS数据反演结果的精度及时间分辨率进行对比分析。结果表明:1)GPS与GLONASS均可用于海平面高度反演;2)GPS L_(1)波段反演结果精度与时间分辨率高于L_(2)波段;3)GPS与GLONASS可联合对海平面高度进行反演,且时间分辨率将会得到极大提升;4)GPS及GLONASS反演结果中均存在系统误差,在后续研究过程中需针对该方面进一步研究。In order to study the accuracy and time resolution of sea level inversion in each band of GPS and GLONAS,this paper selects the GPS L_(1) L_(2) band and the GLONASS G_(1) G_(2) band SNR data from the 124—130 day of the SC02 station in 2019 and uses the polynomial method to decompose the composite signal to obtain the reflected signal.The LSP method is used for spectrum analysis,and the sea level height is obtained by inversion.The tide gauge data near the station is used as the true value.The accuracy and time resolution of the inversion results of the GPS and GLONASS bands are compared and analyzed.The research results show that:(1)GPS and GLONASS can be used for sea level inversion;(2)GPS L_(1) band inversion results have higher accuracy and time resolution than L_(2) band;(3)GPS and GLONASS can carry out joint inversion of sea level height,and the time resolution of the inversion result will be greatly improved;(4)There are systematic errors in the GPS and GLONASS inversion results,and further research on this aspect is needed in the follow-up research process.

关 键 词：GNSS-R GPS GLONASS SNR 海平面高度 验潮仪 

分 类 号：P228.4[天文地球—大地测量学与测量工程]