Under the condition that the integration time is long and the azimuth resolution is high, the range errors introduced by this approximation will be large enough to defocus the image.
We defocused the images by using SDFPs corresponding to ΔVa = 5 m/s, 10 m/s, and 20 m/s.
Matsoukas played with the clean-dirty axis at the level of the film stock for "Why Don't You Love Me?": "We shot on Super 8-millimeter and 16-millimeter (for safety)," she told me in an e-mail message, "and later on went and 'dirtied' up the 16-millimeter to match the Super 8-millimeter by adding grain and dirt and defocusing the sharpness of the images".
Fig. 7 The tested workpiece: a picture of the bearing, b focusing image, and c defocusing image Fig. 8 The tested workpiece: a picture of the big standard cuboid, b focusing image and c defocusing image of the big standard cuboid, d picture of the small standard cuboid, e focusing image, and f defocusing image of the small standard cuboid.
Incoming 532 nm beacon light sent from the OGS is separated from the outgoing beampath using a dichroic mirror, sent through an insertable narrow bandpass filter, to reduce stray light, and onward to the beacon tracker consisting of a modified star tracker.10 During a frame, the defocussed image of the beacon is imaged onto a pixel array.
In addition, in SAR imaging processing, the maximum phase error for range that will not result in defocus of the image is π/4 rad[19].
Also, astigmatism and defocus of the image was estimated using the CTFFIND3 software (Mindell and Grigorieff 2003) that is implemented in 2dx.
Correctly estimated defocus in the image enabled precise positioning of minimal CTF in the Fourier transform, and the simulated CTF indicates oscillating positive and negative CTF as a function of resolution as well as resolution-dependent attenuation of phase amplitude.
In Fig. 4 b, c, the conventional image with defocused target and the image produced by sparsity-driven imaging without any motion compensation are displayed respectively.
In Fig. 5 b, c, the conventional image with defocused target and the image produced by sparsity-driven imaging are displayed.
The first image is produced by the cone-shaped beam, which is surrounded by the defocused image of the hollow beam.
