捷联式重力仪在海洋测量中的应用与数据处理

Applications and Data Processing of Strapdown Gravimeter in Marine Gravity Survey

针对海洋重力测量对重力测量系统的要求,给出了一种捷联式海洋重力仪SAG-2M,论述了系统组成、工作原理、特点和数据处理流程。利用近期获得的某海域重力测量数据,评估了捷联式重力仪精度。测量结果表明,重复测线的重力异常曲线吻合度较高,交叉点不符值精度约为1.2mGal,满足海洋重力测量的指标要求。

According to requirements of marine gravity survey for gravimetry, a strapdown marine gravimeter named SAG-2M is developed, of which the system structure, working principle, fea- tures and data processing flow are discussed. And the system precision is evaluated based on some marine gravity survey which is carried out lately. Results showes that the differences of repeat survey lines are quite small, and the crossover differences is about 1.2mGal, demonstrating that the system could meet the specifications of marine gravitv survey.