资源一号卫星X波段IR-MSS数传天线  

X-BAND IR-MSS DATA TRANSMISSION ANTENNA USED ON CBERS-1 SATELLITE

作　　者：叶云裳[1] 李全明[1] 

机构地区：[1]北京空间飞行器总体设计部,北京9628信箱8分箱100086

出　　处：《宇航学报》2001年第6期1-9,共9页Journal of Astronautics

摘　　要：一种背射双线螺旋天线在中巴合作研制的地球资源卫星上首次用作 x波段 IR-MSS (红外遥感 )数传天线 ,替代了国际上惯用的赋形反射面天线。飞行试验表明 ,天线在轨工作正常 ,具有与赋形反射面天线相当的性能与功能。In consideration of poor space of mounting plan towards the earth and some technical reasons,the shaped reflector was not be recommended to use for the CBERS 1 satellite,therefore a backfire helical antenna occupied a small space was adapted for IR MSS Data Transmission Antenna on the CBERS 1 instead of the shaped reflector.The antenna's performance and function is similar to that of the shaped reflector.The design of the antenna and its performances will be briefly described in the paper.At first,it describes the ideal coverage curve and engineering model of the coverage gain for data transmission antenna on the low orbit satellite.Section 3 gives the mathematical model of radiation of the antenna,the characteristic equation for propagation constant is developed in the section.Using complex propagation constant of the helical antenna a saddle shaped beam whose maximum pointing at 62 5° has been designed.Main properties and function of IR MSS DTA on the CBERS 1 is briefly introduced in section 4.The antenna possesses compact structure,small size,flight weight,low cost and the similar performance to the shaped reflector.It is also more suitable for a variety of small satellite.

关 键 词：卫星 数据传输 赋表波束 北射双线螺旋天线 覆盖增益 红外遥感 X波段 

分 类 号：V443.4[航空宇航科学与技术—飞行器设计]