门限电平的定量分析对卫星电视系统提高接收微弱信号的能力具有重要的指导作用。
A quantitative analysis of the threshold level is important to improve the abilities of receiving weak signals for satellite television system.
围绕超高速这一特点，对系统的相位噪声、接收机噪声系数、发射功率、系统门限接收电平等作详细的论证，以确定总体设计方案。
Round the feature of the ultrafast speed, make the detailed description of phase noise, receiver noise figure, launch power, threshold level of system.
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