The projectile flying rotation number is a key parameter to obtain the fuse operating distance in proximity fuse measurement by counting rotation number.

Analysis of development in proximity fuze of aerial defence missiles;

Combined with the principle of capacitance proximity fuze,four key technologies are analyzed,including the optimum height of burst of fragmentation mortar,control signal processing,directional detection circuit design and antijamming,in the design of capacitance proximity fuze of mortar.

It is difficult to adjust the demodulation voltage for a certain proximity fuze,which cause low function reliability.

On the basis of analyzing two series of south Africa aircraft bomb fuze from their structure characteristic, working environment, working principles, features and so on, this paper puts forword some suggestions for the development of our aircraft bomb fuze fechnology.

Concrete application of themethod in capacity proximity fuzes is described, and it has been shown to bepracticable from results of firing tests.