张志刚,梁月吉,任超,黄仪邦,潘亚龙,周吕,施显健

• 1:桂林理工大学测绘地理信息学院
• 2:广西空间信息与测绘重点实验室

摘要(Abstract)：

利用全球定位系统反射信号干涉测量(GPS-IR)反演雪深成为近年来研究的热点领域。在此基础上,针对卫星反射信号分离这一问题,该文提出一种基于小波分解重构的卫星反射信号提取模型。利用coif5小波变换分解6层信噪比数据重构低频分量获取卫星反射信号,并对其反演精度和稳定性进行判别分析。结果表明:该方法克服了低阶多项式拟合分离卫星反射信号存在的局限性;算法简单实用,具有较强的抗干扰能力,分解得到的卫星反射信号较好;均方根误差和平均绝对误差分别降低了34%和27%;单颗卫星线性回归模型平均相关系数达到0.737,相比传统方法提高40%。

关键词(KeyWords)： GPS-IR;雪深;信噪比;低频分量;卫星反射信号

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41901409,41461089);; 广西高校中青年教师基础能力提升项目(2018KY0247);; 广西自然科学基金项目(2015GXNSFAA139230)

作者(Author): 张志刚,梁月吉,任超,黄仪邦,潘亚龙,周吕,施显健

DOI: 10.16251/j.cnki.1009-2307.2020.08.013

参考文献(References)：

• [1] 朱颖洁,郭纯青,黄夏坤.气候变化和人类活动影响下西江梧州站降水径流演变研究[J].水文,2010,30(3):50-55.(ZHU Yingjie,GUO Chunqing,HUANG Xiakun.Change of precipitation and runoff at Wuzhou station on Xijiang River under influence of climate changes and human activities[J].Journal of China Hydrology,2010,30(3):50-55.)
• [2] BILICH A,LARSON K M.Mapping the GPS multipath environment using the signal-to-noise ratio(SNR)[J].Radio Science,2007,42(6):RS6003.
• [3] 任超,郑中天,梁月吉,等.基于多星GPS-IR的雪深反演分析[J].水力发电,2018,44(6):27-30,43.(REN Chao,ZHENG Zhongtian,LIANG Yueji,et al.Analysis of snow depth retrieval based on multiple satellites GPS-IR[J].Water Power,2018,44(6):27-30,43.)
• [4] 万玮,陈秀万,李国平,等.GNSS-R遥感国内外研究进展[J].遥感信息,2012,27(3):112-119.(WAN Wei,CHEN Xiuwan,LI Guoping,et al.GNSS reflectometry:a review of theories and empirical applications in ocean and land surfaces[J].Remote Sensing Information,2012,27(3):112-119.)
• [5] LARSON K M,BRAUN J J,SMALL E E,et al.GPS multipath and its relation to near-surface soil moisture content[J].IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2010,3(1):91-99.
• [6] LARSON K M,GUTMANN E D,ZAVOROTNY V U,et al.Can we measure snow depth with GPS receivers[J].Geophysical Research Letters,2009,36(17):L17502.
• [7] OZEKI M,HEKI K.GPS snow depth meter with geometry-free linear combinations of carrier phases[J].Journal of Geodesy,2012,86(3):209-219.
• [8] JIN S G,NAJIBI N.Sensing snow height and surface temperature variations in Greenland from GPS reflected signals[J].Advances in Space Research,2014,53(11):1623-1633.
• [9] YU K G,BAN W,ZHANG X H,et al.Snow depth estimation based on multipath phase combination of GPS triple-frequency signals[J].IEEE Transactions on Geoscience & Remote Sensing,2015,53(9):5100-5109.
• [10] QIAN X D,JIN S G.Estimation of snow depth from GLONASS SNR and phase-based multipath reflectometry[J].IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2016,9(10):4817-4823.
• [11] TABIBI S,GEREMIA-NIEVINSKI F,VAN-DAM T.Statistical comparison and combination of GPS,GLONASS,and multi-GNSS multipath reflectometry applied to snow depth retrieval[J].IEEE Transactions on Geoscience and Remote Sensing,2017,55(7):3773-3785.
• [12] ZHANG N,ZHANG S C,HE Y F,et al.Characteristic of GPS SNR and it’s application for snow depth monitoring analysis[C]//China Satellite Navigation Conference.Singapore:Springer,2017:175-185.
• [13] YU K G,LI Y W,CHANG X.Snow depth estimation based on combination of pseudorange and carrier phase of GNSS dual-frequency signals[J].IEEE Transactions on Geoscience and Remote Sensing,2019,57(3):1817-1828.
• [14] 梁月吉,任超,庞光锋,等.结合模平方的双树复小波变形监测数据滤波[J].测绘科学,2016,41(6):23-27.(LIANG Yueji,REN Chao,PANG Guangfeng,et al.A dual-tree complex wavelet transform method based on modulus square for deformation analysis[J].Science of Surveying and Mapping,2016,41(6):23-27.)
• [15] 容静,文鸿雁,周吕.一种改进灰色预测模型在变形预测中的应用[J].测绘科学,2017,42(3):35-38,63.(RONG Jing,WEN Hongyan,ZHOU LYU.The application of GM(1,1)-AR forecasting model based on wavelet in deformation forecast[J].Science of Surveying and Mapping,2017,42(3):35-38,63.)
• [16] 叶险峰.基于GNSS信噪比数据的测站环境误差处理方法及其应用研究[D].武汉:中国地质大学,2016.(YE Xianfeng.Research on processing method of GNSS station environment error and its application using SNR data[D].Wuhan:China University of Geosciences,2016.)
• [17] CHEW C C,SMALL E E,LARSON K M,et al.Vegetation sensing using GPS-interferometric reflectometry:theoretical effects of canopy parameters on signal-to-noise ratio data[J].IEEE Transactions on Geoscience and Remote Sensing,2015,53(5):2755-2764.
• [18] 衡彤.小波分析及其应用研究[D].成都:四川大学,2003.(HENG Tong.Wavelet analysis and its application[D].Chengdu:Sichuan University,2003.)