Spin Satellite Attitude Determined by Aboard Magnetometer

The method and procedure that can determine the parameters of satellite spin axis by the scientific data of magnetometer on board near perigee are presented in this paper. Their importance to scientific exploration and satellite running are expressed too. It is emphasized that two fundamental condition of using this method are that the satellite＇ spin need to be basically stable and the satellite＇s perigee should be not so much high （below 1000 km）. The key operation of the special work is： （1） Determination of model geomagnetic field values by orbit parameters near perigee, （2） Determination of the angle values of satellite spin axis orientation by comparison of the data from magnetometer on satellite near perigee with model geomagnetic field values. The accuracy and application effectiveness on TC-1 satellites and TC-2 satellite of this method are illustrated and compared. It can be concluded that this method and operation demonstrated in this paper is very effective in satellite experiments. They have shown greatly significance in scientific analysis and future satellite application.