For the urgent need of cabin broadband satellite communication in civil aviation market,this pa-per puts forward a dual-mode solution which is based on Ka-band high throughput communication satel-lites. Various aspects of system design are investigated, including satellite resources choosing, network structure,technological system and airworthiness. The composition and the dual-mode working principle of the airborne equipment are introduced in detail. Finally,several technical indices,which are closely corre-lated with design implementation,are analyzed. The scheme design and the results of technical indices a-nalysis have certain reference value for the application of practical engineering.%针对民航市场对客舱宽带卫星通信的迫切需求,提出了一种基于Ka频段高通量卫星的双模解决方案.研究了系统设计的诸多方面,包括卫星资源选择、网络结构、技术体制和适航性.详细介绍了机载设备的组成和双模工作原理,分析了几个与设计实现密切相关的技术指标.方案设计和技术指标分析结果对实际工程应用有一定的参考价值.
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