相位波前 meaning in English

phase front

Advantages , disadvantages and limits of arm are thoroughly examined using signal processing methods . based on the above , incoherent and coherent two - point - source decoy methods and modified coherent two - point - source decoy methods to deflect arm are brought forward . arm ’ s homing heads are generally of mono - pulse structure , so coherent two - point - source ’ s interference resembles that to mono - pulse radar except that interference to radar belongs to far field scope , but interference to arm varies from far field to near field because relative distance drastically changes between the homing head and the two - point - source with missile ’ s homing head continually approaching the target
Arm的导引头一般为单脉冲体制,因此,相干两点源对导引头的干扰类同于对单脉冲雷达的干扰,不同的是:对雷达的干扰都是远场,而导引头随着导弹不断接近目标,两点源与导引头的相对位置发生剧烈变化,由远场变化到近场;导引头天线口面上的合成场也发生了大的变化,相位波前的畸变产生干扰,这就是相干两点源诱偏的基本思想。