Target Velocity Measurements from Speckled Images
Abstract
The transverse component of velocity for a moving laser-illuminated target is determined using computer image processing. Active imaging is employed in which the target is coherently illuminated producing a speckled image in the pupil plane of a CCD array. Multiple image scans are recorded following the same procedure used to retrieve the incoherent target image. This data is electronically processed to produce an interference pattern dependent upon the distance traveled between image scans. The velocity component transverse to the line of sight of the system is calculated using the distance traveled and time elapsed between scans. The axial component of velocity is shown to reduce the visibility of the interference pattern.
Recommended Citation
S. E. Watkins et al., "Target Velocity Measurements from Speckled Images," Proceedings of SPIE - The International Society for Optical Engineering, vol. 2302, pp. 26 - 35, Society of Photo-optical Instrumentation Engineers, Dec 1994.
Department(s)
Electrical and Computer Engineering
Second Department
Physics
International Standard Serial Number (ISSN)
0277-786X
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 Society of Photo-optical Instrumentation Engineers, All rights reserved.
Publication Date
01 Dec 1994