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Automatic Radar Plotting Systems

Published online by Cambridge University Press:  23 November 2009

A. Harrison
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Following traditional naval tactics when outgunned, Captain Wylie laid a smoke screen in the January issue of the Journal and discussed what ‘imply’, ‘seem to think’ and ‘suggest’. Before my actual assertion becomes entirely lost to view may I repeat that a prediction of C.P.A., based only on radar data acquired in less than about three minutes, may be seriously in error. Precisely displayed, with no indication of the magnitude of the possible error, it can mislead. To say as he does that this danger is 'supposed' is certainly to beg the question, and supports my belief that the possible size of the error in C.P.A. is still not fully appreciated.

Type
Forum
Information
The Journal of Navigation , Volume 28 , Issue 3 , July 1975 , pp. 363 - 368
Copyright
Copyright © The Royal Institute of Navigation 1975

References

REFERENCES

1Herther, J. C. and Wylie, F. J. (1975). This Journal, 28, 97.Google Scholar
2Tarnowski, P. G. (1964). ‘Radar computer for CPA’. ASWE Lab. note TX.64.1.Google Scholar
3Gustafson, B. G. and Ås, B. O. (1965). ‘System properties of jumping frequency radars’, Svenska AB Philips, Stockholm.Google Scholar
4Shuffleton, W. H. and Evans, H. G. (1972). ‘A critical evaluation of an experimental collision avoidance system’, International Conference on Advances in Marine Navigational Aids, IEE/IERE, London.Google Scholar
5Harrison, A. (1972). ‘The risk of error in predicted CPA’, International Conference on Advances in Marine Navigational Aids, IEE/IERE, London.Google Scholar
6Gasparini, O., Grasso, G. and Pardini, S. (1972). ‘A smoothing logic with high precision in velocity for naval collision avoidance’, International Conference on Advances in Marine Navigational Aids, IEE/IERE, London.Google Scholar
7Draper, L. (1971). Severe wave conditions at sea. This Journal, 24, 273.Google Scholar
8Whipps, S. L. (1971). The advantages to be gained by positioning the master gyro compass unit at the roll centre of a VLCC. Unpub. int. memo., Kelvin Hughes.Google Scholar
9Prior, P. O. (1973). Situation display. This Journal, 26, 298.Google Scholar
10Marshall, F. (1973). The accuracy of prediction from primary and secondary radar. This Journal, 26, 282.Google Scholar