船载重力测量数据不同测区系统偏差纠正方法研究  

System Error Correction for Shipborne Gravimetric Data form Different Regions of Offshore in China

作　　者：柯宝贵[1] 章传银[1] 郭春喜[2] 王斌[2] 杨磊[3] 

机构地区：[1]中国测绘科学研究院,北京100830 [2]国家测绘地理信息局大地测量数据处理中心,陕西西安710054 [3]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《武汉大学学报（信息科学版）》2015年第3期417-421,共5页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41104006;41004004);国家重点基础研究发展计划资助项目(2013CB733302);地理空间信息工程国家测绘地理信息局重点实验室经费资助项目(201306);中国地质调查局资助项目(12120113019100);国家科技支撑计划资助项目(2012BAB16B01)~~

摘　　要：分析了我国近海海域船载重力测量数据特征,并提出了消除不同测区之间重力测线上重力异常存在系统偏差的方案。提出了参考线的选择标准,利用参考测线上交叉点处的残差重力异常不符值,纠正其他测线重力异常的新思路。结果表明,对测线重力进行纠正后,不同测区的重力值不存在系统偏差,交叉点处不符值明显改善,测线上纠正后重力异常明显优于纠正前的重力异常。The characteristics of shipborne gravimetric data from offshore China were analysed, and a method to eliminate systematic deviation in the gravity for different survey lines located in different re- gions is also proposed. A criteria for determining shipborne gravimetric survey lines for base lines is presented, and the residual disturbance gravity at the cross point between two different survey lines on the base line was used to rectify the other values for different shipborne gravimetric survey lines. These experiemental results show that, in accordance with the criteria presented, when correcting the gravity of the survey line in the proposed method the gravity value difference on different lines does not include a systematic bias, the intersections of discrepancies significantly improved, and the survey lines to correct the gravity disturbance were significantly better than those without pre-corrected grav- ity disturbance.

关 键 词：船载重力测量 参考测线 系统偏差 交叉点不符值 

分 类 号：P229[天文地球—大地测量学与测量工程]