NDLI: ISAR imaging of helicopter

Content Provider	IEEE Xplore Digital Library
Author	Chang Zheng Ma Tat Soon Yeo Hwee Siang Tan Zhoufeng Liu Xiujie Dong Bin Zou
Copyright Year	2007
Description	Author affiliation: Zhongyuan Univ. of Technol., Zhengzhou (Chang Zheng Ma; Tat Soon Yeo; Hwee Siang Tan)
Abstract	Conventional envelope alignment method of ISAR imaging assumes that the target is a rigid body, and therefore, the correlation between one-dimensional range profiles at neighboring time slots gives a larger value compared to correlation between time separated range profiles. But this is not the case for targets such as helicopter which have rotating body parts. In this paper, an envelope alignment algorithm for helicopter target ISAR imaging is proposed. For every range profile, correlation with other range profiles are done, and the range profiles with larger correlation value are used to provide an initial estimate of the target motion parameters by polynomial fitting. Then the estimated parameters are averaged to get a better estimation. The position of the rotor signals are obtained by taking the difference of the range profiles in the slow time domain. The rotor signals are then suppressed by zero-force windowing technique. Simulation results have shown the effectiveness of this algorithm.
Starting Page	838
Ending Page	841
File Size	479704
Page Count	4
File Format	PDF
ISBN	9781424412112
DOI	10.1109/IGARSS.2007.4422927
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-23
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Helicopters Polynomials Parameter estimation Electromagnetic scattering Rotors Motion estimation Signal analysis Radar scattering Electromagnetic analysis Motion compensation
Content Type	Text
Resource Type	Article

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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
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