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首页> 外文期刊>Electrical Engineers - Part III: Radio and Communication Engineering, Journal of the Institution of >The Development and Study of a Practical Spaced-Loop Radio Direction-Finder for High Frequencies
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The Development and Study of a Practical Spaced-Loop Radio Direction-Finder for High Frequencies

机译：实用的高频率间隔环无线电定向仪的研制与研究

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摘要

This paper discusses the principles of design of spaced-loop radio direction-finders and describes a practical instrument embodying these principles. The dimensions of the model described are: size of loops, 1 m square; spacing between loops, 3 m. It has been designed for the frequency range within which the spaced-loop direction-finder can have most useful applications, namely 3????????15 Mc/s (???????? 20????????100m). The sensitivity of the instrument is such that for an arc of silence not exceeding ???????±5 deg, the required field strength, for a ground wave, varies from 1.5 to 4 ????????V/m throughout the range. The direction-finder is provided with a simple and effective means of determining the sense of the bearing, operating on novel principles. To obtain the high accuracy of which the spaced-loop radio direction-finder is capable, care must be taken that the local surroundings of the aerials do not contain features capable of introducing errors of various types. In particular, attention must be paid to the proper disposition of power or telephone cables. In the Appendices, the effects of the essentially non-uniform character of the current distribution in loop aerials are considered, and it is shown that certain arrangements of spaced-loop aerials may be very inaccurate on account of a type of polarization error thus introduced.
机译：本文讨论了间隔环无线电测向仪的设计原理，并描述了体现这些原理的实用仪器。所描述模型的尺寸为：环的大小，1 m平方；回路之间的距离为3 m。它针对间隔环测向仪可以在其中具有最有用应用的频率范围而设计，即3 ???????? 15 Mc / s（?????????? 20？ 100m）。仪器的灵敏度应使对于不超过±5度的静噪弧，对于地波，所需的场强在1.5至4 V之间变化。 / m。测向仪具有一种简单有效的方法，可以根据新颖的原理确定轴承的方向。为了获得间隔环无线电测向仪的高精度，必须注意天线的周围环境不包含会引起各种类型误差的特征。特别是，必须注意正确配置电源线或电话线。在附录中，考虑了环形天线中电流分布的基本不均匀特性的影响，并且表明由于这样引入的极化误差，间隔环形天线的某些布置可能非常不准确。

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