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本文叙述了在传输介质中存在火箭喷焰等离子区引起地面站与火箭之间传输干扰特性的理论和实验结果。其目的是提供有关等离子区对传输影响的定量数据,这对于设计宇宙遥控遥测设备和通讯系统是相当重要的。讨论了基本的传输影响。包括多径散射、前向散射和后向散射,给出并叙述了重要的全部信号传输参数的定义。在叙述和讨论了从“土星”试验系列得到的典型测量结果之后,对信道特性作了概括的讨论。着重讨论了喷焰等离子区对信号传输的三种主要影响,这就是:接收信号电平大幅度下降的可能性,时(间离变散)多径引起的相干带宽的严重減少,以及非常高的衰落速度。讨论了这些影响对运载火箭终端或中继飞行器的信号设计和解调的关系。
This paper describes the theoretical and experimental results of the transmission disturbances caused by the existence of the rocket plasma in the transmission medium between the ground station and the rocket. Its purpose is to provide quantitative data on the impact of the plasma zone on transmission, which is of great importance for the design of the universe’s telemetry equipment and communications systems. Discussed the basic transmission impact. Including multipath scattering, forward scattering and backscattering, the definition of all important signal transmission parameters is given and described. After describing and discussing typical measurement results from the Saturn trial series, the channel characteristics are briefly discussed. Three main effects of the flame plasma zone on signal transmission are highlighted, namely the possibility of a significant drop in the level of the received signal, a severe reduction in the coherent bandwidth caused by the (spatially separated) multipath, and a very high The decline rate. The effects of these influences on the signal design and demodulation of the launch vehicle terminal or relay aircraft are discussed.