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Gigacycle correlator involving sampling oscilloscopes for real time display of correlation functions over adjustable time interval, discussing design and performance

CRT devices, both for photorecording and real time display applications, can be improved in certain of their characteristics by utilizing a number of electron beams simultaneously modulated in the tube. A plurality of beams, when properly generated, focused and deflected, will display information with writing speed, video band-width and brightness generally improved by a factor related to the number of beams used.

A new technique has been developed whereby the outputs from a towed Side Looking Sonar can be presented as a real time display in a standard television format. The system uses a video disc recorder and short-term storage registers to scan convert the sonar data. The sonar data is obtained at a low frequency and is changed to a rate suitable for television. The television picture displays a view of the ocean bottom, in a "moving window" format. The result is a flicker-free, moving display of the sonar data.

In spelling out the requirements for real time display for airborne and space vehicles, it is normally necessary to employ recorded data obtained previously in flight. This may take the form of aerial photographs, radar photographs, IR photographs, moving pictures or video tapes taken by airborne systems. Generation of real time imagery for use in simulators is a complex and costly process. Further, the use of recorded data results in greater flexibility in variations of the data processing and display sub-system. The immediate drawback of such a method is the lack of flexibility in varying sensor characteristics.© (1969) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.