the Natural Science Foundation of Shandong Province of China(No.ZR2022MA051);the China Postdoctoral Science Foundation(No.2020M670891);the SDUST Research Fund(No.2019TDJH103)。
The inhomogeneous sound speed in seawater causes refraction of sound waves,and the elimination of the refraction effect is essential to the accuracy of underwater acoustic positioning.The raytracing method is an indis...
Spatial data have become indispensable across various disciplines and provide crucial insights.These data are associated with coordinates and different coordinate systems.However,the diversity of geospatial data forma...
The National Natural Science Foundation of China under contract No.42104035;the Basic Scientific Fund for National Public Research Institutes of China under contract No.2023Q05;the Natural Science Foundation of Shandong Province under contract No.ZR2020QD087.
Global uniform chart datum(CD)surface construction is the basic upon which to realize various vertical datums transformation,and is of great importance for geospatial data expression under the same vertical datum.Gene...
Supported by the National Natural Science Foundation of China(No.62271400).
In order to get an effective solution of the in-flight wing deformation measurement for high-wing aircrafts with high-aspect-ratio,a method based on three-dimensional(3D)speckle correlation technique is proposed.First...
supported by the National Natural Science Foundation of China(Grant No.41931076);the Scientific and Technology Innovation Program of Laoshan Laboratory(Grant No.LSKJ202205101).
1.Main technical progressinestablishing spatiotemporal datum in China.1.1 Spatial datum.Spatial datum includes three-dimensional coordinate datum(including deep-space datum),height datum(vertical datum),depth datum,an...
Supported by the Internal Grant of Universiti Malaysia Terengganu under the Translational Research Grant No.Vot 53464.
Shoreline change analysis frequently begins with feature identification through visual interpretation(proxy-based shoreline)or the intersection of a specific tidal zone(datum-based shoreline).Using proxy-based shoreli...
GNSS(global navigation satellite system)observations produce the geodetic position including latitude,longitude,and altitude(or ellipsoidal height)concerning the global reference datum WGS84(Word Geodetic System 1984)...
A new gravity base network in the south of the Tibetan Plateau was established with a FG5X absolute gravimeter and three CG-6 gravimeters.The gravity base network consists of 10 absolute gravity points and 17 relative...