Near-field characteristic of target for radio fuze

Taking the adaptive control of proximity or impact pattern for radio fuze as applied background, we established a near-field scattering characteristic model for the target to get the variable law of the Doppler signal and its frequency spectrum at making fuze located in electromagnetic scattering near-field of the target under the conditions of proximity and impact patterns. Aiming at the continuous wave (CW) Doppler system fuze, we discussed the variable law of the Doppler signal and its frequency spectrum in the case of point target and further proposed the simulation results of the echo signal and the Doppler frequency in the case of multipoint target. A body target scattering characteristic model was established by physical theory of optics and physical theory of diffraction, and an analytical method of the Doppler frequency spectrum characteristic was given.