H.F. bearing variations on an Adcock direction-finder
作者:
E.N.Bramley,
期刊:
Proceedings of the IEE - Part C: Monographs
(IET Available online 1956)
卷期:
Volume 103,
issue 4
页码: 350-356
年代: 1956
DOI:10.1049/pi-c.1956.0048
出版商: IEE
数据来源: IET
摘要:
Measurements on a number of transmitters at ranges from 1000 to 5000 km show that the variance of snap bearings within a period of half an hour is of the order of 10deg2. To reduce this variance by a factor of ten, time averaging over about 5 min is required when the bearings are taken at 10 sec intervals. Bearing changes from hour to hour and from day to day have a variance of about 1 deg2and thus set a limit to the error reduction obtainable by averaging over a halfhour period. The results are consistent with previously published estimates of bearing variances.
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