Marine gravimeter has been proved to be the primary technique to efficiently obtain middle-to-short wavelength signals of the earth’s gravity field in geodesy, geodynamics and marine sciences research. In recent years, some prototypes of inertial platform and strapdown marine gravimeters have been developed, where the inertial platform gravimeter systems include CHZ-II and ZL11, and strapdown gravimeter systems include SAG-2M and SGA-WZ. In order to validate the performance of these marine gravimeter prototypes, a synchronous test with the widely used gravimeters GT-2M and LCR arranged on the same vessel was carried out in the north of South China Sea. All the data are processed according to the survey standard flow, and the performance is estimated by analyzing the errors of the repeat lines and the crossover points under the same environment. The compared results show that all the six gravimeters can meet the precision requirement of marine gravity survey. Meanwhile, the precision results of the improved gravimeters can get close to the precision of gravimeter GT-2M, higher than the precision gravimeter LCR.

中文翻译：

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惯性平台和捷联海洋重力仪部分原型的性能评估

海洋重力仪已被证明是大地测量学、地球动力学和海洋科学研究中有效获取地球重力场中短波信号的主要技术。近年来，研制了一些惯性平台和捷联海洋重力仪样机，其中惯性平台重力仪系统包括CHZ-II和ZL11，捷联重力仪系统包括SAG-2M和SGA-WZ。为了验证这些海洋重力仪原型机的性能，在南海北部与广泛使用的重力仪GT-2M和LCR安装在同一艘船上进行了同步测试。所有数据均按照测量标准流程进行处理，通过分析相同环境下重复线和交叉点的误差来估计性能。对比结果表明，6台重力仪均能满足海洋重力测量的精度要求。同时，改进后的重力仪精度结果可以接近重力仪GT-2M的精度，高于精密重力仪LCR。