Results 231 to 240 of about 1,777,518 (275)
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Journal of Navigation, 1977
In this paper the author sketches the historical development of radar beacons: the different types are classified in relation to code and frequency employed and the benefits and drawbacks of more recently proposed types of beacon are discussed.The paper was presented at a Marine Electronics Symposium sponsored by the Society of Electronic and Radio ...
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In this paper the author sketches the historical development of radar beacons: the different types are classified in relation to code and frequency employed and the benefits and drawbacks of more recently proposed types of beacon are discussed.The paper was presented at a Marine Electronics Symposium sponsored by the Society of Electronic and Radio ...
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Developments in marine radar magnetrons
2010 International Conference on the Origins and Evolution of the Cavity Magnetron, 2010Magnetrons for civil marine radar applications have been manufactured on the e2v Chelmsford site since 1947. The earliest production was of the original S band wartime designs developed by the Radiation Laboratory at MIT but it was not long before engineers at the then English Electric Valve Company began making improvements.
Mick Brady, Martin Edwards
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Method for Evaluating Solid State Marine Radar Interference in Magnetron Marine Radars
2019 IEEE Radar Conference (RadarConf), 2019Previously published field test results showed significant solid state marine radar (SS-MR) interference in magnetron marine radars (M-MRs) at 0.34 nautical miles (NM) distance separation and 55 MHz frequency separation. The interference was mitigated but not completely eliminated by increasing distance separation, activating interference rejection (IR)
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Detection of Marine Radar Targets
Journal of Navigation, 1996A radar must detect targets before it can display them. Yet manufacturers' data sheets rarely tell us what the products will detect at what range. Many of the bigger radars are Type Approved so we consult the relevant IMO performance standard A 477 (XII).
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Marine Radar Development and the User
Journal of Navigation, 1964This paper, which will be presented for discussion at the Eastbourne tripartite conference, 12–14 May, examines the efforts made in recent years to improve marine radar in three respects, namely greater expressiveness of the display, simplification of measurement and computation, and increased reliability.
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An integrated marine radar system
Radio and Electronic Engineer, 1963Fault records on a particular marine navigational radar are analysed to determine the probability of successful performance over a given interval. This indicates that certain units are much less prone to failure than others. The duplication of equipment to give greater reliability is examined, and it is shown that from the reliability point of view it ...
A. Harrison, D. Chamberlain
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An investigation into marine radar reliability
Microelectronics Reliability, 1967An interim report is given of a survey undertaken during 1963–64 on the failures encountered during a six-month period in 1000 sea-going marine radars of sixty-five different ...
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The Marine Radar Photoplot System
Journal of Navigation, 1962This paper, having first reviewed briefly the operational characteristics of present radar displays, deals with a new technique for presenting the radar data whereby a large, bright, high-contrast radar picture can be produced on a flat plotting surface by projecting in sequence rapidly processed photographs of a PPI cathode-ray tube presentation.
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Laser radars for marine monitoring
XXII International Symposium on High Power Laser Systems and Applications, 2019Lidar fluorosensors, i.e. laser radars based on laser induced fluorescence (LIF), have been extensively operated by the Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA) to real-time monitoring of water bodies.
Palucci, A. +4 more
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Range Performance of Marine Radar
Navigation, 1959Summary a unique characteristic of the marine radar situation is the existence of a second path of signal propagation by way of the reflective sea surface. For this reason, the marine radar range equation differs from the more conventional expression in several important respects, a careful examination of which can point the way to maximum ...
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