FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3114237536> ?p ?o ?g. }

• W3114237536 endingPage "204201" @default.
• W3114237536 startingPage "204201" @default.
• W3114237536 abstract "Sheared-beam imaging (SBI) is a non-traditional imaging technique in which utilized are three sheared coherent lasers for illumination, and detector array to receive the intensity of speckle pattern reflected from the target. Finally the image of target can be reconstructed by computer algorithm from the data collected before. The SBI has some advantages in high resolution imaging for long-distance space targets. However, the wavefront distortion caused by atmospheric turbulence is a key factor affecting the imaging quality of SBI. Therefore, this paper focuses on the influence of wavefront distortion caused by atmospheric turbulence on the extraction of target spectral information. Theoretical model of the influence of wavefront distortion on imaging is established. The effects of low-order and high-order atmosphere turbulence on SBI imaging quality are analysed respectively. It turns out that low-order atmosphere turbulence does not result in poor image quality nor low-resolution, and just change the position of target on the image plane. But the image quality can be degraded when the wavefront root mean square (RMS) value at the target plane, caused by high-order atmosphere turbulence, exceeds /20. Beam emitted from larger aperture becomes more susceptible to perturbing effect, thus forming lower-quality wavefront. Considering that after passing through the atmosphere, beam also travels a long distance to reach the target surface. Targets at different heights will obtain different wavefront quality due to the diffraction of light. Thus the final wavefront quality is determined by turbulence intensity, aperture size and target height. Multi-layer phase-screen model and Hufnagel-Valley model are used to simulate the influences of near-earth (25 km) atmosphere on wavefront distortion at target plane with different imaging distances. Simulation results show that the wavefront RMS value rises with the increase of transmitting aperture diameter, and decreases with the increase of imaging distance. Transmitting aperture sizes in a range from 0.2 times r0 to twice r0 have been recommended for effective imaging by Hutchin[Hutchin R A 1993 Proc. SPIE 2029 161]. However, we find in our simulations that beams on the order of 2 r0 may cause significant wavefront error at short range target, and under some circumstances the clear image of target cannot be reconstructed. The imaging results of SBI at different laser transmitting apertures and different imaging distances are obtained, and evaluated by Strehl ratio. Imaging results show that choosing appropriate transmitting aperture size can effectively improve the imaging quality. But for the short-range targets, aperture size selection range presented by Hutchin can be too broad to be practicable. This paper suggests some approaches to choosing suitable aperture size for SBI system, and also providing a reference for the difference analysis of imaging quality for targets in different heights." @default.
• W3114237536 created "2021-01-05" @default.
• W3114237536 creator A5012787359 @default.
• W3114237536 creator A5038850742 @default.
• W3114237536 creator A5042662250 @default.
• W3114237536 creator A5044565811 @default.
• W3114237536 creator A5051529700 @default.
• W3114237536 creator A5084148618 @default.
• W3114237536 creator A5086586889 @default.
• W3114237536 date "2018-01-01" @default.
• W3114237536 modified "2023-09-25" @default.
• W3114237536 title "Effect of uplink atmospheric wavefront distortion on image quality of sheared-beam imaging" @default.
• W3114237536 cites W1970368575 @default.
• W3114237536 cites W1973687759 @default.
• W3114237536 cites W2055475124 @default.
• W3114237536 cites W2063524466 @default.
• W3114237536 cites W2529036065 @default.
• W3114237536 cites W2895047435 @default.
• W3114237536 cites W3111757955 @default.
• W3114237536 cites W3117443428 @default.
• W3114237536 cites W565239305 @default.
• W3114237536 doi "https://doi.org/10.7498/aps.67.20181144" @default.
• W3114237536 hasPublicationYear "2018" @default.
• W3114237536 type Work @default.
• W3114237536 sameAs 3114237536 @default.
• W3114237536 citedByCount "1" @default.
• W3114237536 countsByYear W31142375362022 @default.
• W3114237536 crossrefType "journal-article" @default.
• W3114237536 hasAuthorship W3114237536A5012787359 @default.
• W3114237536 hasAuthorship W3114237536A5038850742 @default.
• W3114237536 hasAuthorship W3114237536A5042662250 @default.
• W3114237536 hasAuthorship W3114237536A5044565811 @default.
• W3114237536 hasAuthorship W3114237536A5051529700 @default.
• W3114237536 hasAuthorship W3114237536A5084148618 @default.
• W3114237536 hasAuthorship W3114237536A5086586889 @default.
• W3114237536 hasBestOaLocation W31142375361 @default.
• W3114237536 hasConcept C102290492 @default.
• W3114237536 hasConcept C115961682 @default.
• W3114237536 hasConcept C120665830 @default.
• W3114237536 hasConcept C121332964 @default.
• W3114237536 hasConcept C126780896 @default.
• W3114237536 hasConcept C132771110 @default.
• W3114237536 hasConcept C153294291 @default.
• W3114237536 hasConcept C165699331 @default.
• W3114237536 hasConcept C194257627 @default.
• W3114237536 hasConcept C196558001 @default.
• W3114237536 hasConcept C24890656 @default.
• W3114237536 hasConcept C31972630 @default.
• W3114237536 hasConcept C41008148 @default.
• W3114237536 hasConcept C46362747 @default.
• W3114237536 hasConcept C49040817 @default.
• W3114237536 hasConcept C55020928 @default.
• W3114237536 hasConcept C78336883 @default.
• W3114237536 hasConceptScore W3114237536C102290492 @default.
• W3114237536 hasConceptScore W3114237536C115961682 @default.
• W3114237536 hasConceptScore W3114237536C120665830 @default.
• W3114237536 hasConceptScore W3114237536C121332964 @default.
• W3114237536 hasConceptScore W3114237536C126780896 @default.
• W3114237536 hasConceptScore W3114237536C132771110 @default.
• W3114237536 hasConceptScore W3114237536C153294291 @default.
• W3114237536 hasConceptScore W3114237536C165699331 @default.
• W3114237536 hasConceptScore W3114237536C194257627 @default.
• W3114237536 hasConceptScore W3114237536C196558001 @default.
• W3114237536 hasConceptScore W3114237536C24890656 @default.
• W3114237536 hasConceptScore W3114237536C31972630 @default.
• W3114237536 hasConceptScore W3114237536C41008148 @default.
• W3114237536 hasConceptScore W3114237536C46362747 @default.
• W3114237536 hasConceptScore W3114237536C49040817 @default.
• W3114237536 hasConceptScore W3114237536C55020928 @default.
• W3114237536 hasConceptScore W3114237536C78336883 @default.
• W3114237536 hasIssue "20" @default.
• W3114237536 hasLocation W31142375361 @default.
• W3114237536 hasOpenAccess W3114237536 @default.
• W3114237536 hasPrimaryLocation W31142375361 @default.
• W3114237536 hasRelatedWork W1981895766 @default.
• W3114237536 hasRelatedWork W2011083586 @default.
• W3114237536 hasRelatedWork W2015438825 @default.
• W3114237536 hasRelatedWork W2026121344 @default.
• W3114237536 hasRelatedWork W2031198725 @default.
• W3114237536 hasRelatedWork W2057999051 @default.
• W3114237536 hasRelatedWork W2318785540 @default.
• W3114237536 hasRelatedWork W3025383653 @default.
• W3114237536 hasRelatedWork W3041021528 @default.
• W3114237536 hasRelatedWork W4210379815 @default.
• W3114237536 hasVolume "67" @default.
• W3114237536 isParatext "false" @default.
• W3114237536 isRetracted "false" @default.
• W3114237536 magId "3114237536" @default.
• W3114237536 workType "article" @default.