1981
DOI: 10.1017/s0373463300048049
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Hyperbolic Origins

Abstract: In this paper Claud Powell, formerly of the Decca Navigator Company, discusses the antecedents of modern radio position-fixing systems whose position lines are of hyperbolic form. The paper was presented at an Ordinary Meeting held in London on 22 April with Rear-Admiral D. W. Haslam in the Chair.

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Cited by 4 publications
(3 citation statements)
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“…Microphones were located at known points and the time-of-arrival of the sound of the guns firing was used to find their position (Powell, 1981).…”
Section: T H E T E C H N I C a L B Ac K G R O U N Dmentioning
confidence: 99%
See 1 more Smart Citation
“…Microphones were located at known points and the time-of-arrival of the sound of the guns firing was used to find their position (Powell, 1981).…”
Section: T H E T E C H N I C a L B Ac K G R O U N Dmentioning
confidence: 99%
“…Probably the first use of this hyperbolic principle was not by radio at all but by using the sound waves generated by guns firing in WW1 bombardments. Microphones were located at known points and the time-of-arrival of the sound of the guns firing was used to find their position (Powell, 1981).…”
Section: The Technical Backgroundmentioning
confidence: 99%
“…According to Powell2 the first genuinely hyperbolic system described in a formal patent was that of the Frenchman H.M.A. Mottez in 1923 which slightly pre-dated that of the American H.A.…”
mentioning
confidence: 99%