NDLI: Cross-range calibration of interferometric ISAR under a condition of phase ambiguity

Content Provider	IEEE Xplore Digital Library
Author	Mu Ling Weiming Yuan Wenge Xing
Copyright Year	2009
Description	Author affiliation: Nanjing Research Institute of Electronics Technology, China (Mu Ling; Weiming Yuan; Wenge Xing)
Abstract	The cross-range measurement of a target from Interferometric ISAR (InISAR) can usually be obtained from the interferometric phase of echo. However, the phase which has been received is often ambiguous and the reference point on the target used for phase unwrapping with determined location does not really exist, as a result of which, the accurate value of interferometric phase can not be got easily. By deriving the relationship between interferometric phase and cross-range measurement of InISAR image, a method of cross-range calibration under a condition of ambiguous phase is proposed in this paper, using phase difference between adjacent scatters of the same range cell. In addition, equivalent phase compensation for scatters in different range cells ensures that the interferometric phase information of each strong scatter can be fully used during calibration, which can greatly reduce the influence of noise. The simulation result shows the effectiveness of the method.
Starting Page	903
Ending Page	906
File Size	720597
Page Count	4
File Format	PDF
ISBN	9781424427314
DOI	10.1109/APSAR.2009.5374316
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	cross-range calibration InISAR linear fitting interferometric phase Calibration
Content Type	Text
Resource Type	Article

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