摘要
利用全球定位系统(GPS)信噪比数据反演雪深是一个新兴课题。在现有方法的基础上,提出了一种多星GPS干涉反射(GPS-IR)反演雪深的方法。首先评定单星反演质量,剔除跳变雪深,而后通过等权平均,求出多星GPS-IR反演结果。理论和试验表明,相对于单星反演,多星反演精度更高,可靠性更好,也更能反映实测雪深。
It is an emerging study topic of using GPS SNR data to retrieval snow depth. Based on existing methods, a multi-star GPS-IR retrieval method is proposed. The method firstly evaluates the quality of single star retrieval results and removes the outburst value of snow depth, and then evaluates the multi-star GPS-IR retrieval results by power average. The theory and experiment show that the multi-star retrieval has higher precision and better reliability than single star does, and it can also well reflect the measured snow depth.
作者
任超
郑中天
梁月吉
刘海锋
刘中流
杨庆
REN Chao;ZHENG Zhongtian;LIANG Yueji;LIU Haifeng;LIU Zhongliu;YANG Qing(College of Geomatics and Geoinformation, Guilin University of Technology, Guilin 541004, Guangxi, China;Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin 541004, Guangxi, China)
出处
《水力发电》
北大核心
2018年第6期27-30,43,共5页
Water Power
基金
国家自然科学基金地区科学基金项目(41461089)
广西科技厅自然科学基金项目(2014GXNSFAA118288)
广西空间信息与测绘重点实验室项目(16-380-25-22
15-140-07-34)
2018年度广西高校中青年教师基础能力提升项目(2018KY0247)
