NDLI: Data-adaptive motion compensation for synthetic aperture LADAR

Content Provider	IEEE Xplore Digital Library
Author	Attia, E.H.
Copyright Year	2004
Description	Author affiliation: Imaging Microsensors, Inc., Blue Bell, PA, USA (Attia, E.H.)
Abstract	In this paper, we discuss the application of the spatial correlation algorithm (SCA) (Attia and Steinberg, 1989; Attia, 1993; Attia, 1994), and some of its variants, to synthetic aperture LADAR (SAL) imaging. These algorithms (which derive the required phase corrections from range-resolved LADAR clutter received by the SAL sensor) are very robust, computationally efficient, perform very well in the presence of large uncorrelated phase errors, and do not require dominant scatterers of opportunity. Performance and limitations of the basic SCA are discussed. Dependence of the accuracy of the resulting phase corrections on the SNR per pulse and number of range cells available for estimating the corrections is presented in considerable detail. The impact of residual uncorrected phase errors on image SNR and dynamic range is statistically evaluated taking into account the total number of pulses coherently combined along the imaging baseline. Also, a method for exploiting special features of 3D interferometric SAL imaging for the purpose of improving phase correction accuracy is introduced.
Sponsorship	Aerosp. and Electron. Syst. Soc
Starting Page	1782
Ending Page	1787
File Size	398020
Page Count	6
File Format	PDF
ISBN	0780381556
ISSN	1095323X
DOI	10.1109/AERO.2004.1367958
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-03-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Motion compensation Laser radar Optical imaging Optical distortion Optical scattering Clutter Error correction High-resolution imaging Low earth orbit satellites Adaptive optics
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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