Search NASASearch

Engineering topics

Rezek, T.

Publications and source records attributed to Rezek, T..

Simultaneous optical/gamma ray observations of GRB's

The photographic sky patrols of the Observatories Sonneberg (FRG), Ondrejov (CSFR), Odessa (Ukraine) are used to look for patrol plates which were exposed simultaneously with a gamma-ray burst (GRB) detected by gamma ray observations. The results for the first year of data are presented. For several GRB plates which contain the GRB location, and the exposure time of which contains the time of the GRB are presented. The results of the research for optical flashes on these simultaneous plates are discussed.

Kouveliotou, C.

Visual Systems for Remotely Controlled Vehicles

The Variable Acuity Remote Viewing System is discussed. It was conceived as a technique for resolving the field of view/resolution/ bandwidth tradeoffs that exist in remote viewing systems. This system is based on the fact that integration of the human eye acuity function shows only about 130,000 pixels are required to fully support the human vision. This quantity is well within the capabilities of conventional video systems. The technique utilizes a non-linear optical system in both the sensing and display equipment. The non-linearity is achieved by a special lens which translates a uniform pixel array on its image plane into the object field as a variable angular array. This lens will record the same angular detail the eye would see when viewing the same scene and compress this detail into a uniform matrix of equal sized picture elements on its image plane. This image can be scanned with a broadcast quality tv having a 525 line raster scan. Conventional transmission equipment can then also be used to send the image information to a remote location. When received, the image is projected by a light valve projector onto a hemispherical screen by an identical non-linear lens.

Rezek, T.