The New Earth Gravity Models and the Measurement of the Lense–thirring Effect
نویسندگان
چکیده
We examine how the new forthcoming Earth gravity models from the CHAMP and, especially, GRACE missions could improve the measurement of the general relativistic Lense–Thirring effect according to the various kinds of observables which could be adopted. In a very preliminary way, we use the recently released EIGEN2 CHAMP–only and GRACE01S GRACE–only Earth gravity models in order to assess the impact of the mismodelling in the even zonal harmonic coefficients of geopotential which represents one of the major sources of systematic errors in this kind of measurement.
منابع مشابه
X iv : g r - qc / 0 30 40 11 v 9 5 F eb 2 00 4 The impact of the new Earth gravity mod - els on the measurement of the Lense – Thirring effect
We examine how the new forthcoming Earth gravity models from the CHAMP and, especially, GRACE missions could improve the measurement of the general relativistic Lense–Thirring effect according to the various kinds of observables which could be adopted. In a very preliminary way, we use the first recently released EIGEN2 CHAMP– only and GGM01C GRACE–based Earth gravity models in order to assess ...
متن کاملThe impact of the new Earth gravity model EIGEN-CG03C on the measurement of the Lense-Thirring effect with some existing Earth satellites
The impact of the latest combined CHAMP/GRACE/terrestrial measurements Earth gravity model EIGEN-CG03C on the measurement of the Lense-Thirring effect with some linear combinations of the nodes of some of the existing Earth’s artificial satellites is presented. The 1-sigma upper bound of the systematic error in the nodenode LAGEOS-LAGEOS II combination is 3.9% (4% with EIGENGRACE02S, ∼ 6% with ...
متن کاملA critical approach to the concept of a polar, low–altitude LARES satellite
According to very recent developments of the LARES mission, which would be devoted to the measurement of the general relativistic Lense–Thirring effect in the gravitational field of the Earth with Satellite Laser Ranging, it seems that the LARES satellite might be finally launched in a polar, low– altitude orbit by means of a relatively low–cost rocket. The observable would be the node only. Th...
متن کاملThe challenge to reliably measure the general relativistic Lense-Thirring effect with a few percent accuracy
In this paper we critically analyze the so far performed and proposed tests for measuring the general relativistic Lense-Thirring effect in the gravitational field of the Earth with some of the existing accurately tracked artificial satellites. The impact of the 2nd generation GRACE-only EIGEN-GRACE02S Earth gravity model and of the 1st CHAMP+GRACE+terrestrial gravity combined EIGEN-CG01C Earth...
متن کاملThe impact of the new Earth gravity models on the measurement of the Lense–Thirring effect
In this paper we use, in a very preliminary way, the recently released EIGEN2 Earth gravity model, which is based on six months of data of CHAMP only, in order to reassess the systematic error due to the mismodelling in the even zonal harmonics of geopotential which represents one of the major sources of systematic errors in the LAGEOS–LAGEOS II Lense–Thirring experiment involving the nodes of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003