Magnetic properties of CHAMP and their effects on in-orbit calibration

被引：9

作者：

Luehr, H. ^{[1
]}

Yin, F. ^{[2
]}

Bock, R. ^{[3
]}

机构：

[1] Deutsch GeoForschungsZentrum, GFZ, D-14473 Potsdam, Germany

[2] Wuhan Univ, Dept Space Phys, Wuhan 430079, Peoples R China

[3] European Space Agcy, Estec, NL-2201 AZ Noordwijk, Netherlands

来源：

JOURNAL OF SENSORS AND SENSOR SYSTEMS | 2013年 / 2卷 / 01期

关键词：

D O I：

10.5194/jsss-2-9-2013

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

CHAMP has so far been the most successful magnetic field mission. For achieving that, special effort had to be invested in building a magnetically clean spacecraft. The magnetic moment of the spacecraft is about 1Am(2). In this article we introduce a new method that allows the determination of the magnetic moment during the mission from the average current strength of the magneto-torquers. In order to achieve precise field vector data, the readings of the fluxgate magnetometer are routinely calibrated against the absolute Overhauser measurements. A reanalysis of all the magnetic field data is performed which takes also into account small disturbances from the power system. Uncertainties of the final magnetic field data are estimated to be of the order of 0.1 nT.

引用

页码：9 / 17

页数：9