重力卫星五年运行对求定地球重力场模型的进展和展望

doi:10.11867/j.issn.1001-8166.2006.07.0661

地球科学进展 ›› 2006, Vol. 21 ›› Issue (7): 661 -666. doi: 10.11867/j.issn.1001-8166.2006.07.0661

干旱气候变化与可持续发展下一篇

重力卫星五年运行对求定地球重力场模型的进展和展望

陈俊勇

国家测绘局,北京 100830

收稿日期:2006-02-10 修回日期:2006-04-29 出版日期:2006-07-15
通讯作者: 陈俊勇 E-mail:jychen@mail.ihep.ac.cn

Review and Prospect for the Earth Gravity Field Determination with Gravity Satellites in the Past Five Years

Chen Junyong

State Bureau of Surveying & Mapping，Beijing 100830，China

Received:2006-02-10 Revised:2006-04-29 Online:2006-07-15 Published:2006-07-15

下载PDF ( 1972 )

对近年升空的CHAMP和GRACE和将于2007年升空的GOCE卫星在测定地球重力场方面的技术特点和初步成果进行了回顾、比较和评估。并对它们今后在静态和动态的地球重力场构模方面可能的进展作一展望。现在只用一颗重力卫星的轨道摄动数据，就可以以前所未有的可靠性和精确性来求定地球重力场的长波和部分中波。如CHAMP重力卫星的33个月数据所求定的地球重力场模型,相对于曾利用多颗卫星资料所推算的GR1M5-S1重力场模型,在长波方面的精度和可靠性都有很大改善。而GRACE重力卫星的 110天数据所导出成果的空间分辨率，又优于CHAMP的33个月的数据成果。GRACE卫星还有一个重要任务，就是测定重力场非潮汐的短期性或准实时的变化。还介绍了新发表的一个联合地球重力场模型EIGEN-CG03C, 360完全阶次，分辨率约30′。CG03C同CHAMP/GRACE以前的重力场模型比较，在400 km波长的精度方面改善了一个量级，大地水准面的精度改善了3 cm，重力异常的精度改善了0.4 mgal。

关键词: 重力卫星, CHAMP, GRACE, GOCE, 地球重力场

The technical behaviors and preliminary results in the global gravity field determination obtained from the gravity satellites CHAMP, GRACE and GOCE which will be launch in the near future, are reviewed, compared and summarized. The possible development for the construction of static and kinematic global gravity model based on the observation data of these gravity satellites are also given in the paper. A CHAMP only global gravity field model derived from 33 months of mission data is much better than GRIM5-S1, which was derived from the pre-CHAMP multi- satellite data. The resolution for the result derived from GRACE 110days data is better than that derived from CHAMP mission data mentioned above. There is another task for the GRACE mission, i.e., to determine the real or near real time non tidal variation in the global gravity field. A new combined earth gravity model EIGEN-CG03C, 360 order and degree, 30’ resolution is introduced in the paper. In comparison with the former earth gravity model the accuracy of CG03C is improved by one magnitude in the 400 m wave length, that of geoid is improved by 3 cm, and that of surface gravity anomaly is improved by 0.4 mgal.

Key words: Gravity satellite, CHAMP, GRACE, GOCE, Earth gravity field.

中图分类号:

P228

[1] Biamcale R, Balmimo G, Lemoine J M, et al. A new global Eanth’s gravity field model from satellite orbit perturbations: GRIM5-S1[J]. Geophysical Research Letter,2000, (27):3 611-3 614.

[2] Ilk K H, Flury J, Rummel R, et al. Mass Transport and Mass Distribution in the Earth System (2^ndEdition)[M]. Postdam: Geoforschs Zentrum, 2005:12-25.

[3] Wolff M. Direct measurement of the Earth's gravitational potential using a satellite pair[J]. JGR, 1969, 74(22):5 295-5 300.

[4] Fishchell R E, Pisacane V L. A drag-free lo-lo satellite system for improved gravity field measurements[C]∥Proceeding of the 9th GEOP Conference.Deptartment of Geodesic Science, OSU, Columbus, 1978, Report (280):213-220.

[5] Reigber Ch. Improvements of the gravity field from satellite techniques as proposed to the ESA[C]∥Proceedling of the 9th GEOP Conference.Deptartment of Geodesic Science, OSU, Columbus, 1978, Report (280):221-232.

[6] Tapley B D, Bettadpur S, Watkins M, et al. The gravity recovery and climate experiment: Misson overview and early results[J]. Geophysical Research Letter, 2004, 31(L09607):10.1029/2004 GL 019920.

[7] Tapley B D, Bettadpur S V, Ries J C, et al. GRACE measurements of mass variability in the Earth system[J]. Science, 2004, (305):503-505.

[8] Reigber Ch, Schwintzer P, Neumayer K H, et al. The CHAMP-only EIGEN-2 Earth Gravity Field Model[J]. Advance in Space Research,2003,31(8):1 883-1 888.

[9] Gerlach Ch, Foldvary L, Svehla D, et al. A CHAMP only Gravity Field Model from kinematic orbits using the energy integral[J]. Geophysical Researlh Letter, 2003,30(20):10.1029/2003GL018025.

[10] Mayer G T, Ilk K H, Eicker A, et al. ITG-CHAMG01:A CHAMP gravity field model from short kinematical arcs of a one-year observation period[J]. Journal of Geodesy, 2005, 78(7/8):463-480.

[11] Reubelt T, Austen G, Grafarend E. Space gravity spectroscopy-determination of the Earth's gravitational field by means of newton interpolated LEO ephemerides: Case studies on dynamic (CHAMP Rapid Science Orbit) and Kinematic Orbits[J]. Advances in Geosciences, 2003,(1):127-135.

[12] Fengler M J, Freeden W, Michel V. The Kaiserlautern Multiscale Geopotential Model SWITCH-03 from Orbit Perturbations of the Satellite CHAMP and its Comparison to the Models EGM96, UCPH2002.02.0.5, EIGEN-1S and EIGEN-2[J]. Geophysical Journal of International, 2004,(157):499-514.

[13] Reigber Ch, Jochmann H, Wuench J, et al. Earth gravity field and seasonal variability from CHAMP results from three years in orbit[C]∥Reigber Ch, et al, eds. Earth Observation with CHAMP Results from These Years in Orbit. Berlin: Springer, 2005:25-30.

[14] Reigber Ch, Schmidt R, Flechtner F, et al. An Earth gravity model complete to degree and order 150 from GRACE: EIGEN-GRACE02S[J]. Journal of Geodynamics,2004,39(1):1-10.

[1]	孙和平, 孙文科, 申文斌, 申重阳, 祝意青, 付广裕, 吴书清, 崔小明, 陈晓东. 地球重力场及其地学应用研究进展——2020中国地球科学联合学术年会专题综述[J]. 地球科学进展, 2021, 36(5): 445-460.
[2]	房婷婷, 付广裕. 卫星重力与地球重力场的文献计量分析[J]. 地球科学进展, 2021, 36(5): 543-552.
[3]	涂梦昭,刘志锋,何春阳,任强,卢文路. 基于 GRACE卫星数据的中国地下水储量监测进展[J]. 地球科学进展, 2020, 35(6): 643-656.
[4]	蒋虎,黄珹. CHAMP计划及其在地球科学中的应用[J]. 地球科学进展, 2001, 16(3): 394-398.

阅读次数

全文

摘要