摘要
针对机载SAR采用VHF频段时的宽带宽角扫描、高隔离双线极化天线设计和低剖面、轻重量、高抗震等应用难点,设计了一种P波段宽带宽角高极化隔离度天线;结合实际飞行试验数据,验证了该天线具有良好的性能.同时针对VV极化角反点目标脉压双峰现象,进行了旁附物对距离频谱影响的仿真,并提出了机载挂飞应用注意事项.
Aiming at the application difficulties of wide bandwidth wide angle scanning,high isolation dual linear polarization antenna design and low profile,light weight and high shock&vibration resistance when airborne SAR adopts VHF frequency band,this paper designs a wide bandwidth wide angle high polarization isolation antenna for P-band,and then combined with the actual flight test data,verifies that the antenna has good performance.Besides,for the double-peak phenomenon of the target pulse pressure at the reverse point of the VV polarization angle,the paper carries out the simulation of the influence of side objects on the range spectrum,and puts forward the points needing attention during the hangoff flight of airborne SAR.
作者
沈明星
冯森
张佳佳
武俊杰
李志远
SHEN Mingxing;FENG Sen;ZHANG Jiajia;WU Junjie;LI Zhiyuan(No.38 Research Institute,China Electronic Technology Group Corporation,Hefei 230088,China;Key Laboratory of Aperture Array and Space Application,Hefei 230088,China;University of Electronic Science and Technology of China,Chengdu 610054,China)
出处
《空天预警研究学报》
2022年第2期104-107,共4页
JOURNAL OF AIR & SPACE EARLY WARNING RESEARCH
关键词
机载SAR
双线极化天线
极化隔离
P波段宽带宽角
airborne SAR
dual linear polarization antenna
polarization isolation
P-band wide-bandwidth wide-angle
