Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping
Processing of squinted SAR spotlight data is a challenge because of the significant range migration effects of the raw data over the coherent aperture time. Although in theory the (ω, k )-algorithm takes care of these aspects, its digital implementation requires a time-consuming interpola...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2007-01-01
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| Series: | EURASIP Journal on Advances in Signal Processing |
| Online Access: | http://dx.doi.org/10.1155/2007/59704 |
| _version_ | 1811260428765888512 |
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| author | Helmut Süß Rainer Speck Marijke Vandewal |
| author_facet | Helmut Süß Rainer Speck Marijke Vandewal |
| author_sort | Helmut Süß |
| collection | DOAJ |
| description | Processing of squinted SAR spotlight data is a challenge because of the significant range migration effects of the raw data over the coherent aperture time. Although in theory the (ω, k )-algorithm takes care of these aspects, its digital implementation requires a time-consuming interpolation step. Moreover, the limited precision of this interpolation can introduce distortions at the edges of the final image especially for squinted geometries. A wave number domain processing using a modified Stolt mapping will be developed and analyzed to enhance the quality of the final SAR image. Additionally, the proposed algorithm has a decreased computational load compared to the original (ω,k)-algorithm. Simulation results will validate the focusing and efficiency performances of the modified wave number domain algorithm. |
| first_indexed | 2024-04-12T18:47:15Z |
| format | Article |
| id | doaj.art-80ab5307e95942ccaf2f3af7fa68f8fd |
| institution | Directory Open Access Journal |
| issn | 1687-6172 1687-6180 |
| language | English |
| last_indexed | 2024-04-12T18:47:15Z |
| publishDate | 2007-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EURASIP Journal on Advances in Signal Processing |
| spelling | doaj.art-80ab5307e95942ccaf2f3af7fa68f8fd2022-12-22T03:20:35ZengSpringerOpenEURASIP Journal on Advances in Signal Processing1687-61721687-61802007-01-01200710.1155/2007/59704Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt MappingHelmut SüßRainer SpeckMarijke VandewalProcessing of squinted SAR spotlight data is a challenge because of the significant range migration effects of the raw data over the coherent aperture time. Although in theory the (ω, k )-algorithm takes care of these aspects, its digital implementation requires a time-consuming interpolation step. Moreover, the limited precision of this interpolation can introduce distortions at the edges of the final image especially for squinted geometries. A wave number domain processing using a modified Stolt mapping will be developed and analyzed to enhance the quality of the final SAR image. Additionally, the proposed algorithm has a decreased computational load compared to the original (ω,k)-algorithm. Simulation results will validate the focusing and efficiency performances of the modified wave number domain algorithm.http://dx.doi.org/10.1155/2007/59704 |
| spellingShingle | Helmut Süß Rainer Speck Marijke Vandewal Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping EURASIP Journal on Advances in Signal Processing |
| title | Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping |
| title_full | Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping |
| title_fullStr | Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping |
| title_full_unstemmed | Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping |
| title_short | Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping |
| title_sort | efficient and precise processing for squinted spotlight sar through a modified stolt mapping |
| url | http://dx.doi.org/10.1155/2007/59704 |
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