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一、导言无线电引信是依据目标回波信息工作的,引信的体制、效能与目标特性密切相关。例如引信的灵敏度依据目标回波强弱而定,多卜勒引信是依弹目接近时多卜勒频率变化规律而工作的,比相引信是依目标回波相位变化规律而工作的等等。目标特性通常是指目标对投射在其上的电磁波的二次散射特性,即散射场的空间分布:
I. INTRODUCTION Radio fuze is based on the target echo information, fuze system, performance and target characteristics are closely related. For example, the sensitivity of the fuze depends on the strength of the target echo. The Doppler fuze works according to the variation of the Doppler frequency according to the closeness of the projectile, and is more dependent on the phase change law of the target echo than the phase fuze. The target characteristic generally refers to the secondary scattering characteristic of the electromagnetic wave projected onto it by the target, that is, the spatial distribution of the scattering field: