一种面向无参考点的顺轨干涉SAR海面复图像配准方法

孔维亚; 种劲松

doi:10.11999/JEIT170223

一种面向无参考点的顺轨干涉SAR海面复图像配准方法

doi: 10.11999/JEIT170223

孔维亚¹,
种劲松¹

基金项目:

微波成像技术国家重点实验室基金(CXJJ_15S119)

计量
- 文章访问数: 1241
- HTML全文浏览量: 144
- PDF下载量: 261
- 被引次数: 0
出版历程
- 收稿日期: 2017-03-17
- 修回日期: 2017-08-08
- 刊出日期: 2017-12-19

A Coregistration Method for Ocean Surface Complex Images of Along-track Interferometric SAR without Control Point

KONG Weiya¹,
CHONG Jinsong¹

Funds:

The Foundation of National Key Laboratory of Science and Technology on Microwave Imaging (CXJJ_15S119)

摘要

摘要: 顺轨干涉SAR海面复图像通常利用静止陆地参考点进行配准，获得精确有效的海洋流场干涉相位信息。复图像中无参考点时，仅能依据海浪纹理进行配准，受海面随机运动以及低信噪比的影响，配准像素偏移往往会出现像素级误差，并导致干涉相位图质量严重下降。根据大尺度海浪变化周期较长，在干涉成像间隔内可视作静止这一特征，该文提出保留大尺度海浪对应的方位谱分量以提高数据信噪比和相关性，进而提高配准精度的方法，并选用海面实际方位分辨率作为大尺度海浪方位谱选取范围的约束条件。通过机载顺轨干涉SAR实验数据证明，所提方法可有效提高无参考点海面复图像的配准精度。
- 顺轨干涉SAR /
- 海面复图像 /
- 无参考点配准
Abstract: In order to get high-precision interferogram of ocean surface current, static control points from land area are normally used to coregistrate ocean surface complex images of along-track interferometric SAR. When there is no control point in the image, ocean wave texture can only be used instead. Under the influence of stochastic movement and low signal-to-noise ratio of the ocean, the coregistration error tends to exceed one pixel, hence damages the quality of interferogram severely. Since the period of large-scale wave is much longer than the interferometric interval, large-scale wave can be treated as static during the interval. Based on this matter of fact, this paper proposes a coregistration method by reserving the spectrum of large-scale wave to improve the signal-to-noise ratio and correlation coefficient, further improving the coregistration precision. Ocean azimuth resolution is used as the criterion to decide which part of the spectrum should be reserved. Airborne along-track interferometric SAR data is demonstrated here, proving the proposed method can improve the coregistration precision of ocean surface complex images without control point.
- Along-Track Interferometric SAR (ATI-SAR) /
- Ocean surface complex image /
- Coregistration without control point

HTML全文

参考文献(21)

ROMEISER R and GRABER H C. Advanced remote sensing of internal waves by spaceborne along-track InSARA demonstration with TerraSAR-X[J]. IEEE Transactions on Geoscience Remote Sensing, 2015, 53(12): 6735-6751. doi: 10.1109/TGRS.2015.2447547.

MARTIN A C H, GOMMENGINGER C, MARQUEZ J, et al. Wind-wave induced velocity in ATI SAR ocean surface currents: First experimental evidence from an airborne campaign[J]. Journal of Geophysical Research Oceans, 2016, 121(6): 5314-5328. doi: 10.1002/2015JC011459.

DENG H, FARQUHARSON G, THOMSON J, et al. An analysis of error in surface current mapping by an along-track interferometric FMCW SAR[C]. Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, Beijing, China, 2016: 3215-3218. doi: 10.1109/IGARSS.2016. 7729832.

CHEN Z, ZHANG L, and ZHANG G. An improved InSAR image coregistration method for pairs with relatively big distortions or large incoherent areas[J]. Sensors, 2016, 16(9): 1213-1226. doi: 10.3390/s16091519.

DVORNYCHENKO V N. Bounds on (deterministic) correlation functions with application to registration[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1983, PAMI-5(2): 206-213. doi: 10.1109/TPAMI. 1983.4767373.

ROMEISER R. Quality assessment of surface current fields from TerraSAR-X and TanDEM-X along-track interferometry and Doppler centroid analysis[J]. IEEE Transactions on Geoscience Remote Sensing, 2014, 52(5): 2759-2772. doi: 10.1109/TGRS.2013.2265659.

SUCHANDT S and RUNGE H. Ocean surface observations using the TanDEM-X satellite formation[J]. IEEE Journal of Selected Topics in Applied Earth Observations Remote Sensing, 2015, 8(11): 5096-5105. doi: 10.1109/JSTARS.2015. 2446893.

PLANT W J, TERRAY E A, PETITT R A, et al. The dependence of microwave backscatter from the sea on illuminated area-correlation times and lengths[J]. Journal of Geophysical Research Atmospheres, 1994, 99(C5): 9705-9723. doi: 10.1029/93JC00862.

JACKSON C. Synthetic Aperture Radar Marine User,s Manual[M]. Washington, DC: Published Online, 2004: 36-40.

吴琴霞, 梁兴东, 李焱磊, 等. 残余运动误差对机载多波段SAR 图像配准的影响分析[J]. 雷达学报, 2015, 4(2): 209-216. doi: 10.12000/JR14065.

WU Qinxia, LIANG Xingdong, LI Yanlei, et al. Analysis of the residual motion error impact on airborne multiband SAR image registration[J]. Journal of Radars, 2015, 4(2): 209-216. doi: 10.12000/JR14065.

ZHANG H, HONG J, QIU XL, et al. Effects of residual motion compensation errors on the performance of airborne along-track interferometric SAR[J]. Frontiers of Information Technology Electronic Engineering, 2016, 17(10): 1095-1106. doi: 10.1631/FITEE.1500311.

丁昊, 董云龙, 刘宁波, 等. 海杂波特性认知研究进展与展望[J]. 雷达学报, 2016, 5(5): 499-516. doi: 10.12000/JR16069.

DING Hao, DONG Yunlong, LIU Ningbo, et al. Overview and prospects of research on sea clutter property cognition[J]. Journal of Radars, 2016, 5(5): 499-516. doi: 10.12000/ JR16069.

PLANT W J. A stochastic, multiscale model of microwave backscatter from the ocean[J]. Journal of Geophysical Research Oceans, 2002, 107(C9): 3-1-3-21. doi: 10.1029/2001 JC000909.

CUMMING I G and WONG F H. Digital Signal Processing of Synthetic Aperture Radar Data: Algorithms and Implementation[M]. Washington, DC, Artech House, 2004: 98-101.

MINGQUAN B and BRUNING C. Simulation of ocean waves imaging by an along-track interferometric synthetic aperture radar[J]. IEEE Transactions on Geoscience and Remote Sensing, 1997, 35(3): 618-631. doi: 10.1109/36.581977.

FRASIER S J and CAMPS A J. Dual-beam interferometry for ocean surface current vector mapping[J]. IEEE Transactions on Geoscience and Remote Sensing, 2001, 39(2): 401-414. doi: 10.1109/36.905248.

CHAPRON B and COLLARD F. Direct measurements of ocean surface velocity from space: Interpretation and validation[J]. Journal of Geophysical Research Oceans, 2005, 110(C7): 691-706. doi: 10.1029/2004JC002809.

HIRSCH O. Calibration of an airborne along-track interferometric SAR system for accurate measurement of velocities[C]. Geoscience and Remote Sensing Symposium, Sydney, 2001: 558-560. doi: 10.1109/IGARSS.2001.976221.

ENJOLRAS V, VINCENT P, SOUYRIS J, et al. Performances study of interferometric radar altimeters: From the instrument to the global mission definition[J]. Sensors, 2006, 6(3): 164-192. doi: 10.3390/s6030164.

施引文献

资源附件(0)

访问统计