METHOD FOR OBTAINING OBJECT-PLANE FIELD FROM ITS TWO IMAGES
First Claim
1. A method for obtaining the object-plane field S(x) comprising:
- recording the first image I1(x0) while the point spread function of a radar imaging system is described by an unknown function A1(x0−
x) ;
recording the second image I2(x0) while the point spread function of the radar imaging system is described by an unknown function A2(x0−
x)=A1[m(x0−
x)], where m is preferably in the range from 1.2 to 3;
solving the system of the following two integral equations;
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Abstract
The invention provides a method for obtaining the object-plane field without a pure theoretical estimation or a direct experimental measurement of a point spread function (PSF) of an imaging system. Instead, at least two image-plane fields have to be recorded. It is essential that the resolutions of the system producing the images have to be quite different from each other. Although both PSFs of the system are unknown, the recording conditions have to be chosen so that the second PSF could be expressed via the first PSF. Two integral equations—(1) a convolution of the object-plane field with the first PSF and (2) a convolution of the object-plane field with the second PSF (expressed via the first PSF)—can be reduced to one functional equation in the Fourier space. The reverse Fourier transform of the solution of this equation is the object-plane field.
23 Citations
2 Claims
-
1. A method for obtaining the object-plane field S(x) comprising:
-
recording the first image I1(x0) while the point spread function of a radar imaging system is described by an unknown function A1(x0−
x) ;recording the second image I2(x0) while the point spread function of the radar imaging system is described by an unknown function A2(x0−
x)=A1[m(x0−
x)], where m is preferably in the range from 1.2 to 3;solving the system of the following two integral equations; - View Dependent Claims (2)
-
Specification