英国天空广播公司是一个掌控消费终端的一个极好的例子——你需要天空广播公司的卫星接收天线和接收器及解码卡—连在其用户端供用户观看。
BSkyB is a perfect example of controlling the endpoint of consumption: you need to have Sky's satellite dishes and Sky's receiver and Sky's encrypted card - tied to a subscription - to view it.
下面让我们再来看看卫星接收机的常见故障及处理方法。
Let's take a look at satellite receiver the common failures and processing method.
通过对地面卫星信号覆盖区内的多普勒频率偏移及不确定性范围的计算，给出了卫星导航系统信号的多普勒频率偏移与接收机位置之间的关系。
By calculating the Doppler shift and its uncertainty in the signal covering area, the relation between Doppler shift and the position of the receiver is obtained.
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