According to the property of geomagnetic field and the basic principle of electromagnetic induction, this paper puts forward the structure of geomagnetic revolution sensor, establishes the mathematical model, gives the revolution of pill and the curve of induction electromotive force measured in experement.

This paper presents the current situation and questions of the value opening position indicator,and suggests a new structure which uses magnetic induction speed transducer to transform the oil volume drained by measure motor into pulse numbers,furthermore,the valve opening position can be displayed remotely with digital through the electronic circuit.

Magnetic Sensor Application in IMU of Spinning Missile;

A new scheme was proposed in this paper in the case of measuring rotating rate and scanning angle of TSP based on a magnetic sensor.

With the help of the principle that photoelectric device can compensate for the transparency of More fringe and position error of each single raster, a high precision geomagnetic sensor is designed which is based on tangential More fringe and Nd ferrous and boron compass needle.

Against the big error of height determination for the reentry vehicle because of the information provided by low precision geomagnetic sensor,a novel real-time prediction method is proposed.