Submit Manuscript
Peer Review
Editor Work
| Citation: | Wen Xuejiao, Qiu Xiaolan, You Hongjian, Lu Xiaojun. Focusing and Parameter Estimation of Fluctuating Targets in High Resolution Spaceborne SAR[J]. Journal of Radars, 2017, 6(2): 213-220. doi: 10.12000/JR17005
|
Focusing and Parameter Estimation of Fluctuating Targets in High Resolution Spaceborne SAR
doi: 10.12000/JR17005
-
Abstract
Complex motion can cause serious defocusing phenomena in high resolution spaceborne SAR cases, which then lead to decreased image resolution. In this study, we built a simulation model to quantitatively analyze the signature and effect on maritime fluctuating targets in high resolution cases. To deal with formed Single-Look Complex (SLC) SAR images containing fluctuating targets, we implement a motion-compensation and fine-focusing method to obtain refocused images and the fluctuation parameters. We demonstrate the effectiveness and correctness of the proposed approach in focusing and estimating the parameters of fluctuating targets by processing the simulation results and archived images acquired by Terra-SAR in hybrid spotlight mode. -
-
References
[1] Li X, Deng B, Qin Y, et al. The influence of target micromotion on SAR and GMTI[J].IEEE Transactions on Geoscience and Remote Sensing, 2011, 49(7): 2738–2751. doi: 10.1109/TGRS.2011.2104965[2] Wei S and Wang H. The improvement of the conventional GMTI method with single-channel SAR[C]. 2004 IEEE Geoscience and Remote Sensing Symposium, Anchorage, Alaska, USA, Sept 2004: 2626–2628.[3] Bamler R. Doppler frequency estimation and the Cramer-Rao bound[J].IEEE Transactions on Geoscience and Remote Sensing, 1991, 29(3): 385–390. doi: 10.1109/36.79429[4] Li G, Xia X, Xu J, et al. A velocity estimation algorithm of moving targets using single antenna SAR[J].IEEE Transactions on Aerospace and Electronic Systems, 2009, 45(3): 1052–1062. doi: 10.1109/TAES.2009.5259182[5] Martorella M, Berizzi F, Pastina D, et al. Spaceborne radar imaging of maritime moving targets with the Cosmo-SkyMed SAR system[J].IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014, 7(7): 2797–2810. doi: 10.1109/JSTARS.2014.2321708[6] Noviello C, Fornara G, and Martorella M. Focused SAR image formation of moving targets based on Doppler parameter estimation[J].IEEE Transactions on Geoscience and Remote Sensing, 2015, 53(6): 3460–3470. doi: 10.1109/TGRS.2014.2377293[7] Thayaparan T, Abrol S, Riseborough E, et al. Analysis of radar micro-Doppler signatures from experimental helicopter and human data[J].IET Radar, Sonar and Navigation, 2007, 1(4): 289–299. doi: 10.1049/iet-rsn:20060103[8] Chen V C and Lipps R. ISAR imaging of small craft with roll, pitch and yaw analysis[C]. 2000 IEEE International Radar Conference, Alexandria, VA, USA, May 2000: 493–498.[9] Noviello C, Fornaro G, Martorella M, et al. ISAR add-on for focusing moving targets in very high resolution spaceborne SAR data[C]. 2014 IEEE Geoscience and Remote Sensing Symposium, Quebec, Canada, July 2014: 926–929.[10] Zhu D Y, Wang L, Tao Q N, et al. ISAR range alignment by minimizing the entropy of the average range profile[C]. 2006 IEEE Conference on Radar, Verona, New York, USA, April 2006: 813–818.[11] Li X, Liu G, and Ni J. Autofocusing of ISAR image based on entropy minimization[J].IEEE Transactions on Aerospace and Electronic Systems, 1999, 35(4): 1240–1252. doi: 10.1109/7.805442[12] Wang J, Liu X, and Zhou Z. Minimum entropy phase adjustment for ISAR[J].IEE Proceedings-Radar, Sonar and Navigation, 2004, 151(4): 203–209. doi: 10.1049/ip-rsn:20040692 -
Proportional views
- Publishing Ethics
- Journal Insights
- Abstracting & Indexing
- Peer Review Policies
- Guide for Authors
- ISSN 2095-283X (Print)ISSN 2097-339X (Online)
- CN 10-1030/TN
- CODEN LXEUAO
About Journal
- Sponsor: China Radio Detection and Ranging Industry Association (CRIA)
- Phone: 010-58887062
- Email：radars@aircas.ac.cn
- Publisher: Leida Xuebao Bianjibu (Editorial office of the Journal of Radars)
Contacts Us
京ICP备20021838号-8
Supported by: Beijing Renhe Information Technology Co. Ltd
Export File
Citation
Format
Content
DownLoad:
- Figure 1. Satellite-Earth geometry for fluctuating target
- Figure 2. Double scattering of sea surface
- Figure 3. flow chart for fine focusing of moving target
- Figure 4. Simulation results of fluctuating target single scattering
- Figure 5. Simulation results of double scattering of sea surface
- Figure 6. Azimuth responses for focusing results after deep sampling
- Figure 7. Fine focusing result for single scattering of fluctuating target
- Figure 8. Fine focusing result for double scattering of sea surface
- Figure 9. Compensating phase curves
- Figure 10. Lushun island image from TerraSAR-X
- Figure 11. Analysis and processing results for certain light line inFig. 10(a)
- Figure 12. Analysis and processing results for Lushun port from TerraSAR-X