On the Importance of Multireference Points for CKF Phase Unwrapping in Areas With Discontinuous Quality Maps
Unwrapping high-noise interferograms, particularly those with discontinuous quality maps, can be a challenge when employing the interferometric-synthetic-aperture-radar technique. This letter improves the performance of the cubature-Kalman-filter phase unwrapping method based on a multireference-poi...
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| Veröffentlicht in: | IEEE geoscience and remote sensing letters 2016-06, Vol.13 (6), p.772-776 |
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| container_title | IEEE geoscience and remote sensing letters |
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| creator | Liu, Wanli Bian, Zhengfu Zhang, Qiuzhao Liu, Zhenguo Lei, Shaogang |
| description | Unwrapping high-noise interferograms, particularly those with discontinuous quality maps, can be a challenge when employing the interferometric-synthetic-aperture-radar technique. This letter improves the performance of the cubature-Kalman-filter phase unwrapping method based on a multireference-point strategy, which prevents the propagation of unwrapped errors from low-quality areas to high-quality areas. In applying this strategy, a selection method for reference points is presented, which overcomes the subjectivity and unpredictability in selecting reference points. In order to emphasize the importance of multiple reference points, other steps (including unwrapping model, quality map, etc.) remained the same. Both simulated and real data experiment results validate the feasibility and effectiveness of the proposed multireference-point strategy and reference-point selection method in overcoming error propagation. |
| doi_str_mv | 10.1109/LGRS.2016.2542582 |
| format | Article |
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This letter improves the performance of the cubature-Kalman-filter phase unwrapping method based on a multireference-point strategy, which prevents the propagation of unwrapped errors from low-quality areas to high-quality areas. In applying this strategy, a selection method for reference points is presented, which overcomes the subjectivity and unpredictability in selecting reference points. In order to emphasize the importance of multiple reference points, other steps (including unwrapping model, quality map, etc.) remained the same. 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(IEEE) 2016</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c429t-e34b97277eb4f44fc4067c406f8e7416a951f2ac7b763cd75b8deb3f9211505b3</citedby><cites>FETCH-LOGICAL-c429t-e34b97277eb4f44fc4067c406f8e7416a951f2ac7b763cd75b8deb3f9211505b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/7446260$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/7446260$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Liu, Wanli</creatorcontrib><creatorcontrib>Bian, Zhengfu</creatorcontrib><creatorcontrib>Zhang, Qiuzhao</creatorcontrib><creatorcontrib>Liu, Zhenguo</creatorcontrib><creatorcontrib>Lei, Shaogang</creatorcontrib><title>On the Importance of Multireference Points for CKF Phase Unwrapping in Areas With Discontinuous Quality Maps</title><title>IEEE geoscience and remote sensing letters</title><addtitle>LGRS</addtitle><description>Unwrapping high-noise interferograms, particularly those with discontinuous quality maps, can be a challenge when employing the interferometric-synthetic-aperture-radar technique. 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| subjects | Computer simulation Covariance matrices Cuba Errors Feasibility Indexes Isolated high-quality map Mathematical model Measurement uncertainty multireference points Performance enhancement Phase measurement phase unwrapping (PU) Reliability Remote sensing single reference point State estimation Strategy |
| title | On the Importance of Multireference Points for CKF Phase Unwrapping in Areas With Discontinuous Quality Maps |
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