CAJ | 학술논문

结合机载通信抗干扰设计的工程应用需求,分析了机体遮挡对机身前后左右典型安装位置VHF/UHF和L频段通信天线的影响程度,提出了一种当通信信号和干扰信号分别位于机身两侧时,应用机体遮挡对信号接收的抑制原理,通过选择指向通信信号一侧的左或右机翼天线实现抗干扰通信的方法。该方法仅需新增两副机翼天线和两个射频开关,具备较强的工程可实现性。仿真结果表明该方法能够有效抑制来自机身侧面干扰信号的接收,最大抑制达到35 dB,为机载通信抗干扰能力提升设计提供了新的技术途径和理论指导。
결합궤재통신항간우설계적공정응용수구,분석료궤체차당대궤신전후좌우전형안장위치VHF/UHF화L빈단통신천선적영향정도,제출료일충당통신신호화간우신호분별위우궤신량측시,응용궤체차당대신호접수적억제원리,통과선택지향통신신호일측적좌혹우궤익천선실현항간우통신적방법。해방법부수신증량부궤익천선화량개사빈개관,구비교강적공정가실현성。방진결과표명해방법능구유효억제래자궤신측면간우신호적접수,최대억제체도35 dB,위궤재통신항간우능력제승설계제공료신적기술도경화이론지도。
According to the engineering requirement of airborne anti-jamming communication design,the airframe shading effect on typical forward,rear,left and right distributed VHF/UHF and L-band antennas on the airplane is analyzed. Based on the principle of signal suppression by airframe shading,an anti-jam-ming communication method is proposed by smartly using the left or right wing mounted antenna which faces the communication signal when communication and interference signal comes from different sides of the airplane respectively. The method can be realized easily in engineering because it only needs two new installed wing mounted antennas and two RF switches. The simulation result shows that the method can ef-fectively suppress the interference signal reception from the side of the airplane and the maximal suppres-sion can reach 35 dB. The method provides a new technical solution and theoretical implemental guide for airborne anti-jamming communication design.