Imaging of Airborne Synthetic Aperture Ladar under Platform Vibration Condition
This study examines the imaging problems in airborne synthetic aperture ladar with single detector and dual detectors along tracks under platform vibration condition. Because platform vibrations affect imaging processing for short intervals negligibly, a method uniting the subaperture imaging and ph...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
China Science Publishing & Media Ltd. (CSPM)
2014-10-01
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| Series: | Leida xuebao |
| Subjects: | |
| Online Access: | http://radars.ie.ac.cn/EN/abstract/abstract211.shtml# |
| _version_ | 1797426962628608000 |
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| author | Ma Meng Li Dao-jing Du Jian-bo |
| author_facet | Ma Meng Li Dao-jing Du Jian-bo |
| author_sort | Ma Meng |
| collection | DOAJ |
| description | This study examines the imaging problems in airborne synthetic aperture ladar with single detector and dual detectors along tracks under platform vibration condition. Because platform vibrations affect imaging processing for short intervals negligibly, a method uniting the subaperture imaging and phase gradient autofocus is considered for single-detector ladar. To obtain long stripmap images in azimuth, the stripmap phase gradient autofocus method and the subaperture image mosaic process using Doppler centroid estimation are used. Their performance is analyzed and compared. Considering the shortage of single-detector ladar, a method based on along-track dual-detector interferometric processing is proposed to estimate and compensate for the vibration phase error. The simulation verifies the effectiveness of the proposed methods. |
| first_indexed | 2024-03-09T08:37:26Z |
| format | Article |
| id | doaj.art-f8d1652f88964120b1580ca2094f8e71 |
| institution | Directory Open Access Journal |
| issn | 2095-283X 2095-283X |
| language | English |
| last_indexed | 2024-03-09T08:37:26Z |
| publishDate | 2014-10-01 |
| publisher | China Science Publishing & Media Ltd. (CSPM) |
| record_format | Article |
| series | Leida xuebao |
| spelling | doaj.art-f8d1652f88964120b1580ca2094f8e712023-12-02T17:57:59ZengChina Science Publishing & Media Ltd. (CSPM)Leida xuebao2095-283X2095-283X2014-10-013559160210.3724/SP.J.1300.2014.13132Imaging of Airborne Synthetic Aperture Ladar under Platform Vibration ConditionMa Meng0Li Dao-jing1Du Jian-bo2Institute of Electronics, Chinese Academy of SciencesInstitute of Electronics, Chinese Academy of SciencesInstitute of Electronics, Chinese Academy of SciencesThis study examines the imaging problems in airborne synthetic aperture ladar with single detector and dual detectors along tracks under platform vibration condition. Because platform vibrations affect imaging processing for short intervals negligibly, a method uniting the subaperture imaging and phase gradient autofocus is considered for single-detector ladar. To obtain long stripmap images in azimuth, the stripmap phase gradient autofocus method and the subaperture image mosaic process using Doppler centroid estimation are used. Their performance is analyzed and compared. Considering the shortage of single-detector ladar, a method based on along-track dual-detector interferometric processing is proposed to estimate and compensate for the vibration phase error. The simulation verifies the effectiveness of the proposed methods.http://radars.ie.ac.cn/EN/abstract/abstract211.shtml#LadarSynthetic apertureImaging processingPlatform vibration |
| spellingShingle | Ma Meng Li Dao-jing Du Jian-bo Imaging of Airborne Synthetic Aperture Ladar under Platform Vibration Condition Leida xuebao Ladar Synthetic aperture Imaging processing Platform vibration |
| title | Imaging of Airborne Synthetic Aperture Ladar under Platform Vibration Condition |
| title_full | Imaging of Airborne Synthetic Aperture Ladar under Platform Vibration Condition |
| title_fullStr | Imaging of Airborne Synthetic Aperture Ladar under Platform Vibration Condition |
| title_full_unstemmed | Imaging of Airborne Synthetic Aperture Ladar under Platform Vibration Condition |
| title_short | Imaging of Airborne Synthetic Aperture Ladar under Platform Vibration Condition |
| title_sort | imaging of airborne synthetic aperture ladar under platform vibration condition |
| topic | Ladar Synthetic aperture Imaging processing Platform vibration |
| url | http://radars.ie.ac.cn/EN/abstract/abstract211.shtml# |
| work_keys_str_mv | AT mameng imagingofairbornesyntheticapertureladarunderplatformvibrationcondition AT lidaojing imagingofairbornesyntheticapertureladarunderplatformvibrationcondition AT dujianbo imagingofairbornesyntheticapertureladarunderplatformvibrationcondition |