Study on earth magnetic method of recording rotation numbers used for small caliber fuzes

摘要

In this article, earth magnetic method of recording the numbers of rotation used in small caliber proximity fuzes is discussed, the distribution and characteristics of earth magnetic field are analyzed, some affective factors to sensor's output signal, such as variations of altitude, geographic position are put forward. And it is pointed out that earth magnetic field's notable difference caused by different geographic positions and random shooting angle is the main effective factor. At last, method of measuring the earth magnetic signal is introduced and the result curves is given.