Test Results of CHZ-II Marine Gravimeter on Xuelong
The marine gravimeter is currently an important instrument for obtaining high-precision and high-resolu-tion ocean gravity field information.The main marine gravimeters still rely on imports.As a self-developed marine gravime-ter,CHZ-II has undergone multiple shipborne tests on the sea surface and achieved good results.Firstly,the structural composition and technical characteristics of the CHZ-II marine gravimeter are introduced.Then,the test results carried by the Xuelong scientific research ship are introduced.The internal consistency accuracy of three grid intersection points for the voyage are calculated,the accuracy of grid 1 is 0.73 mGal,the accuracy of grid 2 is 1.63 mGal,and the accuracy of grid 3 is 0.54 mGal,which are consistent with the overall trend of gravity anomalies in the Sandwell V32 satellite altimetry model.The Antarctic test of the Xuelong shows that the instrument has reached the same level of accuracy and stability as similar instruments at home and abroad,and can replace the current imported ocean gravimeters.
CHZ-II marine gravimeterzero-length springmarine gravimetryprecision of inner coincidence
NETL
NSTL
万方数据
