Phase correction system for automatic focusing of synthetic aper

Details Phase correction system for automatic focusing of synthetic aper Phase correction system for automatic focusing of synthetic aper

1989-09-14

1990-05-08

Tarcza, Thomas H.

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

Synthetic aperture radar

G01S 1390

Patent

active

049242296

ABSTRACT:
A phase gradient autofocus system for use in synthetic aperture imaging accurately compensates for arbitrary phase errors in each imaged frame by locating highlighted areas and determining the phase disturbance or image spread associated with each of these highlight areas. An estimate of the image spread for each highlighted area in a line in the case of one dimensional processing or in a sector, in the case of two-dimensional processing, is determined. The phase error is determined using phase gradient processing. The phase error is then removed from the uncorrected image and the process is iteratively performed to substantially eliminate phase errors which can degrade the image.

REFERENCES:
patent: 4617567 (1986-10-01), Chan
patent: 4771287 (1988-09-01), Mims
W. Brown and D. Ghighlia, "Some Methods for Reducing Propagation-Induced Phase Errors in Coherent Imaging Systems, I. Formalism", Journal of the Optical Society of America, vol. 5, Jun. 1988, pp. 924-941.

Affiliated with

Also associated with

Rating

Phase correction system for automatic focusing of synthetic aper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase correction system for automatic focusing of synthetic aper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase correction system for automatic focusing of synthetic aper will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2352141