GEODYN-Ⅱ软件移植和40阶次月球重力场的解算  

Transplantation of GEODYN-Ⅱ and solution of 40th lunar gravity field

作　　者：杨宏伟[1] 赵文津[1] 吴珍汉[1] 

机构地区：[1]中国地质科学院青藏高原研究室,北京100037

出　　处：《地质通报》2011年第11期1727-1737,共11页Geological Bulletin of China

基　　金：中国地质调查局地质调查工作项目<月球地质遥测信息综合分析研究>(编号:1212010811050)

摘　　要：将GEODYN-Ⅱ软件从工作站移植到了PC机平台上,其计算效率明显高于工作站平台上5~10倍。利用移植版本的GEODYN-Ⅱ软件和SELENE卫星轨道数据求解了40阶次月球重力场模型,以及月球自由空气重力异常场和月表重力异常场。其自由空气重力异常场与SELENE小组在SCIENCE上的结果是一致的。同时与LP165Q对比,在月球背面其解算的40阶次月球重力场的精度比LP165Q模型要高,但是相对于月球正面仍没有LP165P的精度高,还有待进一步改进。In this study,GEODYN-Ⅱ based on PC platform was transplanted from workstation platform and,as a result,the calculation speed of the transplanted software is five to ten times higher than the speed on that platform.With the transplanted software and SELENE tracking data,the 40th degree lunar gravity coefficient model was solved,and the free air gravity anomaly field and gravity anomaly on lunar surface were built afterwards.The 40th degree free air gravity anomaly field was consistent with the results published in the magazine Science by SELENE group.In comparison with LP165Q,the 40th gravity model has higher accuracy on lunar farside. On lunar nearside,however,the 40th gravity model is not as high in accuracy as LP165P,and hence should be further improved.

关 键 词：月球40阶次重力位场 自由空气重力异常 月表重力异常 SELENE轨道数据 GEODYN-Ⅱ软件 软件移植 

分 类 号：P312[天文地球—固体地球物理学]