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????GRACE???????????????2005 ??1~11?μ??й?????????????????±仯???о???????????GRACE??????????????????????к???????????????????????cm???Ч???仯????????÷???????????????????仯?о??????????     

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???GOCE??GRACE????????????????е???????????о?????GOCE??GRACE?????????λ??????????????????????λ???????????????????????????Э????????????????????GRACE?????????ITG??GRACE2010s??GOCE?????????GO_CONS_GCF_2_DIR_R1?????????????????????????????????????????????????????????????????GRACE??GOCE????????????????????????????徫?????????GOCE??GRACE????????GOCO01S??????????????????Э?????????????????????????????????m??λ?????????????     

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????GRACE??????????????????????????????????????仯??????????????о??伾????????仯??????????????????仯?????????ж??????????????????????????????仯???????????????δ?????????仯???????о???????????GRACE????????????????????????????仯??????????????cm????Ч???仯??     

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???????GPS??GRACE?????????????α???????????????????GRACE???λ???GPS?????????????о?????(RMS)??С?????????????仯????λ???????????????н???????????GPS?????????????仯?????????????????????????????Щ???????????????????????????С?????????????????????????????????????п??????????????????????ó???GRACE?????α????????С????????????????????????????????????????????????GPS??????????????????д??μ??????????????????GPS???????????????о???     

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??????????????GRACE?????????????仯????????????????????????о???2003~2005?????????????仯?????????????????GRACE????????????????????????????????仯?????????????????????Σ?GRACE??????????????????????????仯??     

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??????????????????????GRACE??????????????????????2006??1????2?μ??????????仯???о?????????????????????????????????????????????Σ?????????γ??????????????????????????????????????????????????????????????????????????????????????     

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???????л??????????????????ж???????????????????????????????????????????????????????????????????????????????????????????ж???????????????о???????????CHAMP??GRACE????????顣??????????÷????????????????????????????????????????????????????????????????????????????????     

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??侫????????????GRACE????????????Ч?????????????????????????GRACE????????о???????????????????????????λ????????????????????λ???????????????????????????????????????????????????????????????λ???????????????????????????????????λ??????????????????????     

�͹�������GPS�����������϶����о�

?о???????漰????GPS?????????????????CHAMP??GRACE????GPS???????????????????????????????????????????????????????????????????PANDA??????????????????????????????????????????????ν???????????????????????????????????????????????     

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????????λPPP?????????????????ù???????????????????????????? ???????????????????????????????????????????????????????????????????????????????????????о????н??????? ????????????CHAMP??RACE????????????????????ο?????????????CHAMP???????????ο??????XYZ3?????????????????????0.22 m??0.22 m??0.25 m???????????????0.41 m??GRACE??A??????????????ο??????XYZ 3?????????????????????0.27 m??0.23 m??0.29 m???????????????0.45 m??     

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???????????????????????Ч???????????????????????????????????? ???GOCE??????????????????????????????????????????????????????????????????????????????С????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????С?????????????????????????????????????????     

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????????????????????ù????????????????????????????????????????????????????????????????????SST-HL/SGG-Doppler-VLBI????????????????????50~100 km??     

新一代重力测量卫星核心指标分析

采用边界分析方法分析新一代重力测量卫星3个核心载荷--星间测距系统、非保守力测量仪和定位接收机的误差对恢复重力场的影响,提出新一代重力测量卫星的核心技术指标。分析表明,星间变率测量精度10~30 nm/s、非保守力测量精度（1~5）×10-11 m/s2、定轨精度2~3 cm时,可实现分辨率100 km、精度1~2 mGal的重力场测量。本文结论可为新一代重力测量卫星设计提供技术参考。     

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????????????????GOCE??????????????? L1b????????????????????????????????????????????????????????????????????????飬δ??????????????????????????????????????????????????????????     

Improved-GRACE����������������Ż��о�

???????????????????ü????????????????GPS????????λ????????????????????????????????????????????????????????????????Improved??GRACE?????????????????????????????????????????????1????300?????????350 km???????????????????????3.993??10 ^-1 m??????300 km??250 km???????????????????8.770????77.145????????400 km??450 km??????????????????8.718????75.307????2??????50 km???????????????????????3.993??10^-1 m??????110 km??220 km??????????????????1.259????1.395????3????????????Improved??GRACE????????????????????????????????350 km??50 km?????     

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????????????????????????й???????????????????????????????о?????????????????????仯????????????????????????????????????????????????????????????????????????и???????????????2??3 cm?????￡??????????????????????????????????侫?????????????????????????????????????????nm??????????????????????????????????????????????????????????????????????????????????????????У??????????????????????     

GRACE���������������л�Ƶ���Ӱ���̽��

???GRACE?????л??????????????????????????????????????????ò?????????????????????????????????????????????????????????????????????????????????????????????????????Ч???????     

流动重力布局评价及其观测技术

本文从流动重力测量的布局、复测周期以及观测技术等方面介绍了地震系统重力测量的现状，提出了优化现行布局、调整复测周期、提高观测技术以及改善观测条件的具体意见。指出：为了获得与地震有关的重力变化信息，当前的重点应放在布局的优化和复测周期的调整上。     

The absolute gravity measurement by FG5 gravimeter at Great Wall Station,Antarctica

Gravity measurement is of great importance to the height datum in Antarctica.The absolute gravity measurement was carried out at Great Wall Station, Antarctica, using FG5 absolute gravity instrument.The gravity data was processed with corrections of earth tide, ocean tide, polar motion and the atmospher, and the RMS is within +3 x 10 -s ms-2.The vertical and horizontal gravity gradients were measured using 2 LaCoaste & Romberg (LCR) gravimeters.The absolute gravity measurement provides the fundamental data for the validation and calibration of the satellite gravity projects such as CHAMP, GRACE and GOCE, and for the high accuracy geoid model.     

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