POSITION FINDING BY RATE OF CHANGE OF ALTITUDE OF THE SUN
作者:
RishR. F.,
期刊:
Survey Review
(Taylor Available online 1978)
卷期:
Volume 24,
issue 189
页码: 323-325
ISSN:0039-6265
年代: 1978
DOI:10.1179/sre.1978.24.189.323
出版商: Taylor&Francis
数据来源: Taylor
摘要:
AbstractA screen is described that avoids direct observation of the sun. Sights may be taken to the centre of the sun. Times are taken using a Hewlett-Packard HP45 calculator as a recording stopwatch. The rate of change of altitude is measured as well as the altitude. Latitude, longitude and azimuth are then calculated. The sun does not need to be on the prime vertical.
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