The decision in the burst height of continuous doppler radio fuse is often disturbed and inhered with large dispersion. To solve this problem
a microchip controlled fuse system is designed. The methods of correlative comparison is used to extract target information. In order to remove influence factors of the burst height dispersion
the cancellation of influence by division is used. The digital filtering
false alarm threshold setting and proximity energizing technique is used to realize anti disturbance. Simulation test has proved that the function of circuit is fine and the circuit can protect the fuse against early burst
disturbance of slow changed signals and abruptly arised big pulse signals.