The slow response characteristics of output current signal of vanadium self powered neutron detector(VSPND)seriously affect the real-time response of the neutron flux measurement in the reactor,which is not conducive to real-time control and safety management of reactor.Inverse function calculations or various compensation methods are used to improve the response characteristics of VSPND,which is beneficial to the use of it.The forward difference transform method,backward difference transform method,step re...