Spectral-Based Estimation of the Local Azimuth Ambiguity-to-Signal Ratio in SAR Images
An innovative technique to estimate the local azimuth ambiguity-to-signal ratio (AASR) in synthetic aperture radar (SAR) images is presented. Unlike the backscatter-based (BB) technique, the proposed one, which is based on the spectral properties of the image, does not require that the areas respons...
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| Veröffentlicht in: | IEEE transactions on geoscience and remote sensing 2014-05, Vol.52 (5), p.2304-2313 |
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| container_title | IEEE transactions on geoscience and remote sensing |
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| creator | Villano, Michelangelo Krieger, Gerhard |
| description | An innovative technique to estimate the local azimuth ambiguity-to-signal ratio (AASR) in synthetic aperture radar (SAR) images is presented. Unlike the backscatter-based (BB) technique, the proposed one, which is based on the spectral properties of the image, does not require that the areas responsible for the ambiguity lie within the focused image. Analysis of real TerraSAR-X data shows that the estimates of the proposed technique are consistent with the BB ones. Moreover, according to simulations, the proposed technique seems to provide more accurate estimates than the BB method, especially for high values of the local AASR. |
| doi_str_mv | 10.1109/TGRS.2013.2259244 |
| format | Article |
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Unlike the backscatter-based (BB) technique, the proposed one, which is based on the spectral properties of the image, does not require that the areas responsible for the ambiguity lie within the focused image. Analysis of real TerraSAR-X data shows that the estimates of the proposed technique are consistent with the BB ones. Moreover, according to simulations, the proposed technique seems to provide more accurate estimates than the BB method, especially for high values of the local AASR.</description><subject>Ambiguity</subject><subject>Antennas</subject><subject>Applied geophysics</subject><subject>Azimuth</subject><subject>Azimuth ambiguities</subject><subject>Backscattering</subject><subject>Bandwidth</subject><subject>Doppler effect</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Estimates</subject><subject>Estimation</subject><subject>Exact sciences and technology</subject><subject>Internal geophysics</subject><subject>microwave remote sensing</subject><subject>Radar polarimetry</subject><subject>Simulation</subject><subject>Spectra</subject><subject>spectral domain analysis</subject><subject>Synthetic aperture radar</subject><issn>0196-2892</issn><issn>1558-0644</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNqFkUtrGzEUhUVpoW6aH1C6EZRCN-Pq6jlausZJDIaA7WY7aDQaR2Ee7kizcH99NNh4kU1Wd3G_cy73HIS-AZkDEP17f7_dzSkBNqdUaMr5BzQDIfKMSM4_ohkBLTOaa_oZfQnhhRDgAtQMPe2OzsbBNNkfE1yFVyH61kTfd7ivcXx2eNNb0-DFf9-O8Rkv2tIfRh9PWeyznT90abedeOw7vFts8bo1Bxe-ok-1aYK7vcwb9PdutV8-ZJvH-_Vyscksy3XMLKWsgpJJVlVgc-q0FBRy6YQR0pRQ0lxyVnEh85qoGuraaeI02FJKxUrDbtCvs-9x6P-NLsSi9cG6pjGd68dQgFKEESqBvI8KDpymgyqhP96gL_04pFcnCigHkAoSBWfKDn0Ig6uL45CyG04FkGIqpZhKKaZSikspSfPz4mxCirUeTGd9uAppzrUkauK-nznvnLuuUzhKU8JeAT9nkoI</recordid><startdate>20140501</startdate><enddate>20140501</enddate><creator>Villano, Michelangelo</creator><creator>Krieger, Gerhard</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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| identifier | ISSN: 0196-2892 |
| ispartof | IEEE transactions on geoscience and remote sensing, 2014-05, Vol.52 (5), p.2304-2313 |
| issn | 0196-2892 1558-0644 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Ambiguity Antennas Applied geophysics Azimuth Azimuth ambiguities Backscattering Bandwidth Doppler effect Earth sciences Earth, ocean, space Estimates Estimation Exact sciences and technology Internal geophysics microwave remote sensing Radar polarimetry Simulation Spectra spectral domain analysis Synthetic aperture radar |
| title | Spectral-Based Estimation of the Local Azimuth Ambiguity-to-Signal Ratio in SAR Images |
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