Methods and systems for resolution of sonar images

To evaluate the resolution of individual sonar images in field conditions without specific targets, a statistical sampling of the imagery is taken and analyzed. Large quantities of resolution measurements are made on point-objects identified in the imagery. The measurements are compared to improve f...

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Bibliographische Detailangaben
1. Verfasser:	Prater, Jr., James L
Format:	Patent
Sprache:	eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CALCULATING COMPUTING COUNTING DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES IMAGE DATA PROCESSING OR GENERATION, IN GENERAL LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	To evaluate the resolution of individual sonar images in field conditions without specific targets, a statistical sampling of the imagery is taken and analyzed. Large quantities of resolution measurements are made on point-objects identified in the imagery. The measurements are compared to improve fidelity and generate statistically significant results. The image is broken into segments for analysis to identify variation in resolution across the image. The mean value of point-target resolution per segment can be determined for the imagery. A segment with an insufficient number of measurements required to determine a statistically significant value for resolution is rejected. The image resolution can be determined as the mean or median value of the segment measurements for the entire image.