基于GNSS信号信噪比观测量的海平面高度变化研究

作者：胡 媛 1  刘 卫 2  周 悦 1  王 一 津 1  俞 子 恒 1

单位：1. 上海海洋大学 工程学院, 上海 201306; 2. 上海海事大学 商船学院, 上海 201306

关键词：GPS 信 噪 比  海 平 面 高 度  卫 星 导 航

分类号：P228.4;P731.23

出版年·卷·期（页码）：2017·34·第三期（26-31）

摘要：

建立基于GNSS信号的海面测高数学模型，揭示基于载波和信噪比观测量测高方法的内在联系；提出利用造价便宜的GPS接收机以及普通接收机天线进行海平面高度变化监测的手段；进行海平面高度变化监测的实验并与验潮仪对比分析。结果表明：利用普通GPS接收机和天线进行海平面测高可以获得厘米级的测量精度，24 h连续监测的均方根误差为4.13 cm，GPS高度计与验潮仪的测量结果相关系数为0.86；所布设的GNSS高度计与造价昂贵的大地测量型接收机监测结果相当，该造价便宜的高度计更适合用于未来大规模实际的海平面高度变化监测中。

The mathematical model of sea level altimetry based on GNSS signal carrier observables and the SNR is established,and the relation of two methods is studied in this paper.The scheme of sea level changes monitoring using inexpensive GPS receiver and off-shelf antenna is designed.Sea level monitoring experiment is conducted and the results of GPS measurement are compared with tide gauge data.The results show that centimeter accuracy of sea level changes can be archived using ordinary GPS receiver and antenna.The results of the 24 hours experiment show that the RMS error is 4.13 cm.The correlation coefficient of GPS altimeter and tide gauge measurements is 0.86.The GPS altimeter can obtain similar accuracy compared with the results of geodetic receiver equipped with a GPS antenna with a choke spherical equivalent protective cover.This indicates that the GPS altimeter can be used for future actual sea level forecasting.

参考文献：

[1] Anderson K.A GPS tide gauge[J].GPS World Showcase,1995,6:44. [2] Cohen J,Small C,Mellinger A,et al.Estimates of coastal populations[J].Science,1997,278(5341):1209-1213. [3] Stammer D,Ray R D,Andersen O B,et al.Accuracy assessment of global barotropic ocean tide models[J].Reviews of Geophysics,2014,52(3):243-282. [4] Larson K M,Logren J,Haas R.Coastal sea level measurements using a single geodetic GPS receiver[J].Advances in Space Research,2013,51(8):1301-1310. [5] Zavorotny V U,Voronovich A G.Scattering of GPS signals from the ocean with wind remote sensing application[J].IEEE Transactions on Geoscience and Remote Sensing,2000,38(2):951-964. [6] Park H,Valencia E,Camps A,et al.Delay tracking in spaceborne GNSS-R ocean altimetry[J].IEEE Geoscience and Remote Sensing Letters,2013,10(1):57-61. [7] You H Z,Garrison J L,Heckler G,et al.The autocorrelation of waveforms generated from ocean scattered GPS signals[J].IEEE Geoscience and Remote Sensing Letters,2006,3(1):78-82. [8] Ablain M,Cazenave A,Valladeau G,et al.A new assessment of the error budget of global mean sea level rate estimated by satellite altimetry over 1993-2008[J].Ocean Science,2009,5(2):193-201. [9] Martin-Neira M.A pasive reflectometry and interferometry system (PARIS) application to ocean altimetry[J].ESA Journal,1993,17:331-355. [10] Martin-Neira M,Caparrini M,Font-Rossello J,et al.The PARIS concept:an experimental demonstration of sea surface altimetry using GPS reflected signals[J].IEEE Transactions on Geoscience and Remote Sensing,2001,39(1):142-150. [11] Ruffini G,Soulat S,Caparrini M,et al.The Eddy Experiment:accurate GNSS-R ocean altimetry from low altitude aircraft[J].Geophysical Research Letters,2004,31(12):L12306. [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] Roussel N,Ramillien G,Frappart F,et al.Enhancement in interference pattern technique for altimetry and tide/wave measurements:Offshore 60-meter lighthouse case study[C]//Proceedings of the 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS).Milan,Italy:IEEE,2015:3894-3897. [14] Bishop G J,Klobuchar J A,Doherty P H.Multipath effects on the determination of absolute ionospheric time delay from GPS signals[J].Radio Science,1985,20(3):388-396. [15] Georgiadou P Y,Kleusberg A.On carrier signal multipath effects in relative gps positioning[J].Map Collector,1988,13(3):172-179. [16] Gleason S,Gebre-Egziabher D.GNSS Applications and Methods[M].Boston:Artech House,2009. [17] Carreno-Luengo H,Camps A,Ramos-Peez I,et al.Experimental evaluation of GNSS-reflectometry altimetric precision using the p (y) and c/a signals[J].IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2014,7(5):1493-1500. [18] Rius A,Noque-Correig O,Rib?S,et al.Altimetry with GNSS-R interferometry:first proof of concept experiment[J].GPS Solutions,2012,16(2):231-241.

服务与反馈：

【文章下载】【发表评论】【查看评论】【加入收藏】