摘要
传统振幅和差式雷达导引头天线设计是给出各个小天线的方向性函数,通过调整增益和各个小天线与和波束的夹角来合成和波束,这样容易导致天线不能满足和波束条件.为此,给出了一种新的雷达导引头天线设计原理和公式.根据公式设计出四喇叭天线的天线方向性函数,计算出各天线与和波束之间的夹角,产生的和波束满足雷达导引头的要求.仿真结果表明:设计的振幅和差式雷达导引头天线满足和波束3 dB波宽和差波束3 dB波宽内线性变化要求.
The design of seeker antenna of traditional radar with sum and difference by amplitude is to present the directivity functions of various sub-antennas and to synthesize the summing beams by adjusting the gains and the included angles between those sub-antennas and beams,thus resulting in the antenna failing to satisfy the conditions of sum beams.Consequently,this paper presents a new sort of designing principles and formulas for radar seeker,by which,the directivity functions of four horn antenna is designed,the included angles between various antennas and beams are calculated,and the sum beams generated,meeting the demand of radar seekers.Simulation results show that the designed seeker antenna of radar with sum and difference by amplitude satisfies the conditions that the sum beams and difference ones vary linearly within the wave-width range of 3 dB.
出处
《空军雷达学院学报》
2011年第5期325-326,331,共3页
Journal of Air Force Radar Academy
关键词
雷达导引头
天线方向图
喇叭天线
振幅和差
radar seeker
antenna directional pattern
horn antenna
sum and difference by amplitude
