In this paper,we examine the interrelation between innovation and commercial marketing using the DFH-4 series bus satellite as an example which customers are familiar with.Strategies in evolving satellite buses and ke...In this paper,we examine the interrelation between innovation and commercial marketing using the DFH-4 series bus satellite as an example which customers are familiar with.Strategies in evolving satellite buses and key subsystem technologies without compromising on advanced innovations,favorable heritage and thorough verification are also discussed.Market development experiences with the DFH-4 series bus satellite are summarized and market recognition is reflected from the space insurance perspective.展开更多
本文将认知无线电(cognitive radio,CR)和图论引入差分跳频(differential frequency hopping,DFH)网络,提出基于IC着色和干扰温度模型的认知差分跳频多址(IC-ITMA)原理,用IC着色与干扰温度理论控制网内用户的发射行为,网内各发射机在接...本文将认知无线电(cognitive radio,CR)和图论引入差分跳频(differential frequency hopping,DFH)网络,提出基于IC着色和干扰温度模型的认知差分跳频多址(IC-ITMA)原理,用IC着色与干扰温度理论控制网内用户的发射行为,网内各发射机在接收机处产生的干扰温度正交.接收机根据测得的干扰温度来区分它们,使之达到区分预期信号和干扰信号的目的.仿真结果表明,该方法较传统差分跳频网络可以显著提高抗多址干扰性能.展开更多
文摘In this paper,we examine the interrelation between innovation and commercial marketing using the DFH-4 series bus satellite as an example which customers are familiar with.Strategies in evolving satellite buses and key subsystem technologies without compromising on advanced innovations,favorable heritage and thorough verification are also discussed.Market development experiences with the DFH-4 series bus satellite are summarized and market recognition is reflected from the space insurance perspective.
文摘本文将认知无线电(cognitive radio,CR)和图论引入差分跳频(differential frequency hopping,DFH)网络,提出基于IC着色和干扰温度模型的认知差分跳频多址(IC-ITMA)原理,用IC着色与干扰温度理论控制网内用户的发射行为,网内各发射机在接收机处产生的干扰温度正交.接收机根据测得的干扰温度来区分它们,使之达到区分预期信号和干扰信号的目的.仿真结果表明,该方法较传统差分跳频网络可以显著提高抗多址干扰性能.
