Communications: directive radio wave systems and devices (e.g. – With particular circuit – Display
Patent
1997-04-17
1999-02-02
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Display
342197, G01S 7298
Patent
active
058671218
ABSTRACT:
The Radar Scan Converter System (1) receives range and azimuth data generated by a conventional radar as presented in a polar coordinate system, (2) stores this data in associated cell locations in a range/azimuth polar video map, and (3) displays this polar coordinate range/azimuth data in a Cartesian coordinate system, in real time, on a conventional computer monitor having a rectangular display formed by a relatively large number of pixels organized in the Cartesian coordinate system. Each pixel in the display is sequentially update by (1) selecting a respective pixel address, (2) determining the corresponding range/azimuth cell address in the polar video map, (3) reading the video level in this corresponding range/azimuth cell, and (4) in response to this associated video level, either initially loading or subsequently updating the selected pixel. The radar scan converter system displays (1) shades of gray or color, which may represent one or more video levels, and (2) has an image decay capability over repeated radar scans which is particularly suited for display of a moving target.
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Erickson Fred W.
Smith William F.
Ellingsberg Donald J.
Litton Systems Inc.
Sotomayor John B.
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