高空平台无线通信系统设计

Design on High-altitude Platform Wireless Communication System

针对当前快速发展的高空平台无线通信系统,对其系统的原理、构成和技术特点进行简要介绍。在系统设计中分析了其信道模型,指出在低频段可以借鉴陆地移动通信的Okumura-Hata模型进行链路损耗预计;对空中交换体制进行了选择,提出了地空通信中抗多径衰落工程方法,抗多普勒频移的技术途径;实现了空中通信设备中信道模块、共用平台的小型化设计。对高空平台无线通信系统的发展方向进行了展望。

The principle, composition and features of emerging wireless communications based on high altitude platforms are briefly introduced. Based on analysis of the channel model in system design,it is concluded that the Okumura-Hata model can be used for link loss prediction in low frequency. The aerial switching system is selected, and the engineering method of practical techniques of anti-mul- tipath-fading and the technical way of anti-Doppler-frequency-offset in ground-air communication are proposed. Also, the miniaturized design of channel module and common platform in the aerial communication equipment is achieved. A perspective view is given for the future development of high-altitude platform wireless communications.