基于GPS信噪比数据观测海平面变化研究
|
摘要
近年来,GPS-R技术已发展成为一项监测地球环境变化的新技术。首先推导了GPS-R技术观测海平面变化的原理公式,接着描述了利用GPS信噪比(SNR)数据反演水位变化的处理流程,最后利用IGS站SC02的数据,基于自主研发的数据分析软件,反演了该站长达14年的海平面变化时间序列。通过与该站附近的验潮站数据进行对比,两者表现出很好的一致性,相关系数高达0. 96,两者较差的RMS为8cm。研究结果进一步验证了基于GPS信噪比数据监测海平面变化的可行性和可靠性。
In recent years,GPS-R technology has developed into a new technology of monitoring the change of earth environment. Firstly,the formulas of GPS-R measuring the sea level changes are derived,then the data processing flow is described.Finally,w e obtain sea level time series of 14 years by processing the GNSS data of SC02 station based on the self-development softw are.Comparing w ith the data independently observed from tide gauge near this station,they have good consistency,the correlation coefficient is better than 0.96,and the RM S is8 cm.The experiment results further verify the feasibility and reliability of monitoring sea level changes based on GPS SNR.
In recent years,GPS-R technology has developed into a new technology of monitoring the change of earth environment. Firstly,the formulas of GPS-R measuring the sea level changes are derived,then the data processing flow is described.Finally,w e obtain sea level time series of 14 years by processing the GNSS data of SC02 station based on the self-development softw are.Comparing w ith the data independently observed from tide gauge near this station,they have good consistency,the correlation coefficient is better than 0.96,and the RM S is8 cm.The experiment results further verify the feasibility and reliability of monitoring sea level changes based on GPS SNR.
引文
[1] Bindoff N L,Willebrand J,Artale V,et al.Observations:Oceanic climate change and sea level[J].2007:385-433.
[2] L9fgren J S. Local Sea Level Observations Using Reflected GNSS Signals[D]. Chalmers University of Technology,2014.
[3] Dawidowicz K. Sea level changes monitoring using GNSS technology-A review of recent efforts[J]. Acta Adriatica,2014,55(2):127-144.
[4] Zerbini S,Raicich F,Prati C M,et al.Sea-level change in the Northern M editerranean Sea from long-period tide gauge time series[J]. Earth-Science Review s,2017(167):72-87.
[5]焦文海,郭海荣,何涛,等.利用验潮和GPS观测技术监测海平面绝对变化[J].海洋测绘,2004,24(3):5-8.
[6] Sch9ne T,Sch9n N, Thaller D. IGS Tide Gauge Benchmark M onitoring Pilot Project(TIGA):scientific benefits[J]. Journal of Geodesy,2009,83(3-4):249-261.
[7]李大炜,李建成,金涛勇,等.利用多代卫星测高资料监测1993~2011年全球海平面变化[J].武汉大学学报:信息科学版,2012,37(12):1421-1424.
[8]闫龙浩,陈春涛,翟万林,等.GPS浮标测高精度影响因素研究[J].中国工程科学,2014,16(6):102-108.
[9] Martin-Neira M. A PAssive Reflectometry and Interferometry System(PARIS):Application to ocean altimetry[J].esaj,1993,17(4):331-355.
[10] Larson K M,L9fgren J S,Haas R. Coastal sea level measurements using a single geodetic GPS receiver[J].Advances in Space Research,2013,51(8):1301-1310.
[11]张双成,南阳,李振宇,等.GNSS-MR技术用于潮位变化监测分析[J].测绘学报,2016,45(9):1042-1049.
[12] Roussel N,Ramillien G,Frappart F,et al. Sea level monitoring and sea state estimate using a single geodetic receiver[J]. Remote Sensing of Environment,2015(171):261-277.
[13] L9fgren J S,Haas R,Scherneck H G. Sea level time series and ocean tide analysis from multipath signals at five GPS sites in different parts of the w orld[J].Journal of Geodynamics,2014(80):66-80.
[2] L9fgren J S. Local Sea Level Observations Using Reflected GNSS Signals[D]. Chalmers University of Technology,2014.
[3] Dawidowicz K. Sea level changes monitoring using GNSS technology-A review of recent efforts[J]. Acta Adriatica,2014,55(2):127-144.
[4] Zerbini S,Raicich F,Prati C M,et al.Sea-level change in the Northern M editerranean Sea from long-period tide gauge time series[J]. Earth-Science Review s,2017(167):72-87.
[5]焦文海,郭海荣,何涛,等.利用验潮和GPS观测技术监测海平面绝对变化[J].海洋测绘,2004,24(3):5-8.
[6] Sch9ne T,Sch9n N, Thaller D. IGS Tide Gauge Benchmark M onitoring Pilot Project(TIGA):scientific benefits[J]. Journal of Geodesy,2009,83(3-4):249-261.
[7]李大炜,李建成,金涛勇,等.利用多代卫星测高资料监测1993~2011年全球海平面变化[J].武汉大学学报:信息科学版,2012,37(12):1421-1424.
[8]闫龙浩,陈春涛,翟万林,等.GPS浮标测高精度影响因素研究[J].中国工程科学,2014,16(6):102-108.
[9] Martin-Neira M. A PAssive Reflectometry and Interferometry System(PARIS):Application to ocean altimetry[J].esaj,1993,17(4):331-355.
[10] Larson K M,L9fgren J S,Haas R. Coastal sea level measurements using a single geodetic GPS receiver[J].Advances in Space Research,2013,51(8):1301-1310.
[11]张双成,南阳,李振宇,等.GNSS-MR技术用于潮位变化监测分析[J].测绘学报,2016,45(9):1042-1049.
[12] Roussel N,Ramillien G,Frappart F,et al. Sea level monitoring and sea state estimate using a single geodetic receiver[J]. Remote Sensing of Environment,2015(171):261-277.
[13] L9fgren J S,Haas R,Scherneck H G. Sea level time series and ocean tide analysis from multipath signals at five GPS sites in different parts of the w orld[J].Journal of Geodynamics,2014(80):66-80.