[1] Henan Polytech Univ, Sch Surveying & Land Informat Engn, Jiaozuo 454000, Peoples R China
[2] WSP Environm & Infrastruct Canada Ltd, Ottawa, ON K2E 7L5, Canada
[3] Delft Univ Technol, Dept Geosci & Engn, Stevinweg 1, NL-2628 CN Delft, Netherlands
[4] Leibniz Univ Hannover, Ludwig Franzius Inst Hydraul Estuarine & Coastal E, Nienburger Str 4, D-30167 Hannover, Germany
[5] Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China