Ka/EHF频段卫星信道传输特性研究  

Research on Transmission Characteristics of Ka/EHF Band Satellite Channel

作　　者：李峰[1] 冯晓雯[1] 左鹏[1] 叶淦华 

机构地区：[1]总参通信部驻714厂军代室,江苏南京210002 [2]南京电讯技术研究所,江苏南京210007

出　　处：《无线电通信技术》2010年第1期47-49,64,共4页Radio Communications Technology

摘　　要：为了获取更高的可用带宽,使用更小的天线口径并获得更强的抗干扰能力,Ka频段在军事卫星通信系统中已经得到广泛的使用,并正在向EHF频段发展。在Ka频段的卫星通信系统已经被建立,但更高的EHF频段对卫星通信系统来讲仍是一个尚待研究的领域。EHF频段降雨损耗、多普勒频移等因素对系统设计所造成的影响必须充分考虑,因此对EHF频段的信道特性分析是未来极高频卫星通信系统设计的关键之一。在研究Ka频段信道传输特性的基础上,对EHF频段的信道传输特性作了初步的研究和探索。More and more military satellite communication systems work at Ka band and EHF band to obtain wider bandwidth, smaller antenna and better performance against the jammers. Some Ka-band satellite communication systems have been established, but EHF-band satellite communication system has not been developed. The rain attenuation and Doppler frequency offset should be considered carefully at EHF-band. The channel characteristic of EHF-band is one of the key points for future EHF-band satellite communication systems. In this paper, the transmission characteristics of Ka-band channel is analyzed in detail, and then the transmission characteristics of EHF-band channel is studied partly.

关 键 词：EHF 卫星通信 雨衰 

分 类 号：TN927.2[电子电信—通信与信息系统]