NDLI: An Non-Parametric Rotating Angle Acquisition Method for Optimal ISAR Imaging

Content Provider	IEEE Xplore Digital Library
Author	Xiaohui Qiu Yang Zhao
Copyright Year	2006
Description	Author affiliation: Dept. of Inf. Eng., Nanjing Post & Telecom Univ. (Xiaohui Qiu)
Abstract	Inverse synthetic aperture radar (ISAR) imaging usually consists of two stages. The first is motion compensation applied for transforming the relative motion between radar and moving target into the radar's rotation motion around the target on the turntable. The second is range-Doppler (R-D) image formation of target. Conventional R-D imaging requires that during the coherent integrated time period, the migration of scatters on target should not be through one resolution cell, otherwise the focusing of edge scatters may be degraded. However, in case of high-speed angular motion like a plane's big-maneuver flight and ship motion with roll, pitch and yaw, at this time the rotating angle may suddenly be increased greatly within the fixed coherent time which may results in scatter migration through a resolution cell. Therefore, it is necessary to select an appropriate rotating angle for imaging to ensure ISAR imaging results to be focused. Although some research have been reported on this issue, these methods usually need estimation of parameters to realizing ISAR imaging at large rotating angles. In this paper a new idea of acquiring rotating angle for optimal ISAR imaging is presented which is no longer based on the estimation of parameters like rotating angle, rotating speed, etc. The method is described and an example is also given to show the efficiency of new method with good focusing effect in ship ISAR imaging
Sponsorship	Motorola Air Force Office of Sci. Res. ANSOFT
Starting Page	2697
Ending Page	2700
File Size	171914
Page Count	4
File Format	PDF
ISBN	1424401232
DOI	10.1109/APS.2006.1711159
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radar scattering Focusing Radar imaging Marine vehicles Parameter estimation Inverse synthetic aperture radar Motion compensation High-resolution imaging Image resolution Degradation
Content Type	Text
Resource Type	Article

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