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首页> 外文期刊>Proceedings of the IEE - Part B: Radio and Electronic Engineering >An experiment to test the reciprocal radio transmission conditions over an ionospheric path of 740 km
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An experiment to test the reciprocal radio transmission conditions over an ionospheric path of 740 km

机译：测试电离层路径740 km上的双向无线电传输条件的实验

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摘要

Two-way pulse transmissions made simultaneously on the same frequency (5.1 Mc/s approximately) between Slough and Inverness (740 km) are described. An aerial common to transmitter and receiver was used at each terminal, and the fading patterns displayed at each end were compared visually: the Inverness display was relayed to Slough over a Post Office trunk line for this purpose. The fading of corresponding echoes was found to be non-reciprocal for about 1% of the time during a total period of observation of about 15 daylight hours spread over 13 days in May, 1954. The precautions taken to ensure that the effects were ionospheric and not instrumental are outlined.
机译：描述了在Slough和Inverness（740 km）之间以相同的频率（大约5.1 Mc / s）同时进行的双向脉冲传输。在每个终端使用发射器和接收器共有的天线，并通过视觉比较在每个末端显示的衰落模式：为此，将Inverness显示器通过邮局干线中继到Slough。在1954年5月的13天中，大约15个日光小时的总观测时间内，发现对应回波的衰落在大约1％的时间内是不可逆的。为确保电离层效应和电离层效应已采取了预防措施。非工具性概述。

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