Improvement of the empirical thermospheric model DTM: DTM94 - a comparative review of various temporal variations and prospects in space geodesy applications

被引：139

作者：

Berger, C

Biancale, R

Ill, M

Barlier, F

机构：

[1] Observ Cote Azur, Grp Rech Geodesie Spatiale, F-06130 Grasse, France

[2] Observ Midi Pyrenees, Grp Rech Geodesie Spatiale, F-31400 Toulouse, France

[3] Konkoly Observ Budapest, Budapest, Hungary

来源：

JOURNAL OF GEODESY | 1998年 / 72卷 / 03期

关键词：

thermosphere models; non-gravitational forces; air drag; orbit determination; space geodesy;

D O I：

10.1007/s001900050158

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The Drag Temperature Model (1978) has been improved to respond better to the actual requirements of space geodesy, especially under extreme solar and geomagnetic conditions. Extended data and an improved algorithm have been considered, leading to valuable improvements. Temporal variations of temperature of the thermopause, total density and :major chemical constituent density are reviewed and compared to the DTM94, DTM78 and MSIS86 models. A comparison with data is performed, giving the mean ratios between observed and model values with their root mean squares for different physical and geometric conditions. This comparison is made for the three models and includes data used in the modelling as well as external data. The limits of the thermosphere modelling are discussed.

引用

页码：161 / 178

页数：18