Point target filter

Details Point target filter Point target filter

1991-06-24

1992-03-03

Barron, Jr., Gilberto

Communications: directive radio wave systems and devices (e.g.,

Radar for meteorological use

342 91, 342 93, G01S 1395, G01S 7292

Patent

active

050936654

ABSTRACT:
A method and apparatus of point target filtering in a weather radar system for eliminating point targets such as airplanes in real time. A one-dimensional filter is used that operates on a single radar dwell of data at a time. The filter searches for point targets in a reflectivity data field by looking for increases and decreases in the magnitude of the radar return. Each sample volume of the radar dwell is compared to adjacent sample volumes and the differences are tested against predetermined point target thresholds. The differences greater than such predetermined thresholds are flagged. After the entire radar dwell is processed, flagged point target data in the sample volumes are replaced with the data from the sample volume just before the point target which is not considered to part of the point target. The point target filter removes the point targets and the performance limiting contamination they represent to automatic weather data processing programs.

REFERENCES:
patent: 4023165 (1977-05-01), Holt et al.
patent: 4528565 (1985-07-01), Hauptmann
patent: 4713664 (1987-12-01), Taylor, Jr.

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