External measurement method for muzzle velocity of projectile measuring cannot measure accurately in severe weather environment such as low light and structure is complicated

volume is big

operation is inconvenient

and can’t be used as initial parameters for subsequent trajectory guidance. Aiming at the problems

a new measurement method using test method is put forward

magnetoresistive sensor and coil target combination method to real-time measure projectile muzzle velocity. Firstly

introduce speed measuring principle of the system is introduced

and then build overall scheme of the system

set up hardware circuit and design corresponding software. Finally

experimental verification is carried out. Experimental result show that muzzle velocity measurement system is reliable and the maximal relative error is less than 0. 2 %.