双基星载HRWS-SAR系统俯仰向DBF处理技术

林玉川; 张剑云; 武拥军; 周青松

doi:10.11999/JEIT170012

双基星载HRWS-SAR系统俯仰向DBF处理技术

doi: 10.11999/JEIT170012

基金项目:

安徽省自然科学基金(1508085MF119)

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- 被引次数: 0
出版历程
- 收稿日期: 2017-01-03
- 修回日期: 2017-05-03
- 刊出日期: 2017-10-19

Digital Beam-forming Scheme on Elevation for Bistatic Spaceborne High Resolution Wide Swath SAR

Funds:

The Natural Science Foundation of Anhui Province (1508085MF119)

摘要

摘要: 双基星载高分辨率宽测绘带SAR系统(HRWS-SAR)利用数字波束形成技术(DBF)将俯仰向多通道的回波信号进行快时间域的相干合成，DBF处理性能必然受到双基构型的影响。该文针对一般双基构型的星载HRWS- SAR系统，推导了点目标接收方向角与收发距离和之间的线性近似表达式，建立了俯仰向通道的回波信号模型，进而构建了一种时变加权与FIR滤波相结合的DBF处理方法，并给出了系统实现框图。该文对几种典型双基构型的星载HRWS-SAR系统DBF处理进行了仿真，结果表明合理的双基构型能有效提升星载HRWS-SAR系统的DBF处理性能。
- 双基SAR /
- 高分辨宽测绘带 /
- 数字波束形成 /
- 双基构型
Abstract: In bistatic spaceborne High Resolution Wide Swath SAR (HRWS-SAR) system, the Digital Beam Forming (DBF) technique is employed to achieve the coherent combination of multi-channel signals in the fast time domain, and its performance is affected by the bistatic configuration. For a point target, the relationship between receiver aspect angle and the sum of transmitter distance and receiver distance is approximated by a linear function, and the echo signal model in elevation channel is built. Further, a DBF processing scheme is proposed, which combines the time-variant weighting and Finite Impulse Response (FIR) filtering, and the implementation block diagram is presented. The DBF processing is simulated in several typical bistatic configuration spaceborne HRWS-SAR systems. Simulation results show that the higher DBF performance can be achieved in the spaceborne HRWS-SAR system with rational bistatic configuration.
- Bistatic SAR /
- High Resolution Wide Swath (HRWS) /
- Digital Beam Forming (DBF) /
- Bistatic configuration

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参考文献(23)

ZINK M, BACHMANN M, BRAUTIGAM B, et al. TanDEM-X: The new global DEM takes shape[J]. IEEE Geoscience and Remote Sensing Magazine, 2014, 2(2): 8-23. doi: 10.1109/MGRS.2014.2318895.

BUESO J, PRATS P, MARTONE M, et al. Performance evaluation of the TanDEM-X quad polarization acquisitions in the science phase[C]. 11th European Conference on Synthetic Aperture Radar, Hamburg, Germany, 2016: 627-632.

MOREIRA A, KRIEGER G, HAJNSEK I, et al. Tandem-L: A highly innovative bistatic SAR mission for global observation of dynamic processes on the earth's surface [J]. IEEE Geoscience and Remote Sensing Magazine, 2015, 3(2): 8-23. doi: 10.1109/ MGRS.2015.2437353.

HUBER S, VILLANO M, YOUNIS M, et al. Tandem-L: Design concepts for a next-generation spaceborne SAR System[C]. 11th European Conference on Synthetic Aperture Radar, Hamburg, Germany, 2016: 1237-1241.

SUESS M, ZUBLER M, and ZAHN R. Performance investigation on high resolution wide swath SAR system[C]. 4th European Conference on Synthetic Aperture Radar, Cologne, Germany, 2002: 49-53.

BORDONI F, YOUNIS M, MAKHAUL V, et al. Adaptive scan-on-receive based on spatial spectral estimation for high- resolution wide-swath SAR[C]. International Geoscience and Remote Sensing Symposium 2009, Cape Town, South Africa, 2009: 431-435. doi: 10.1109/IGARSS.2009.5416941.

YOUNIS M, HUBER S, PATYUCHENKO A, et al. Performance comparison of reflector- and planar-antenna based digital beam-forming SAR[J]. International Journal of Antennas and Propagation, 2009, 4(6): 379-386.

冯帆, 李世强, 禹卫东. 一种改进的星载SAR俯仰向DBF处理技术[J]. 电子与信息学报, 2011, 33(6): 1465-1470. doi: 10.3724/SP. J.1146.2010.01176.

FENG Fan, LI Shiqiang, and YU Weidong. An improved scheme of digital beam-forming on elevation for spaceborne SAR[J]. Journal of Electronics Information Technology, 2011, 33(6): 1465-1470. doi: 10.3724/SP.J.1146.2010.01176.

FENG Fan, DANG Hongxing, TAN Xiaomin, et al. An improved scheme of digital beam-forming in elevation for spaceborne SAR[C]. IET International Radar Conference 2013, Xi,an, China, 2013: 1-6. doi: 10.1049/cp.2013.0208.

WANG Wei, WANG Robert, DENG Yunkai, et al. An improved processing scheme of digital beam-forming in elevation for reducing resource occupation[J]. IEEE Geoscience and Remote Sensing Letters, 2016, 13(3): 309-313. doi: 10.1109/LGRS.2015.2508098.

VARONA E M. Adaptive digital beam-forming for high- resolution wide-swath SAR system[D]. [Master dissertation], Universitat Politecnica.de Catalunya, France, 2009.

WANG Wei, WANG Robert, DENG Yunkai, et al. Improved digital beam-forming approach with scaling function for range multi-channel synthetic aperture radar system[J]. IET Radar, Sonar Navigation, 2016, 10(2): 379-385. doi: 10.1049/iet-rsn.2015. 0276.

HUBER S, YOUNIS M, PATYUCHENKO A, et al. A novel digital beam-forming concept for spaceborne reflector SAR system[C]. 6th European Radar Conference, Rome, Italy, 2009: 238-241.

HUBER S, YOUNIS M, PATYUCHENKO A, et al. Digital beam-forming technqiues for spaceborne reflector SAR systems[C]. 8th European Conference on Synthetic Aperture Radar, Aachen, Germany, 2010: 962-965.

王伟, 王宇, 侯丽丽. 俯仰向数字波束形成技术对SAR系统性能的影响分析[J]. 电子与信息学报, 2014, 36(11): 2711-2716. doi: 10.3724/SP.J.1146.2013.02002.

WANG Wei, WANG Yu, and HOU Lili. Analysis on performance of SAR system affected by digital beam forming in elevation[J]. Journal of Electronics Information Technology, 2014, 36(11): 2711-2716. doi: 10.3724/SP.J.1146. 2013.02002.

李杨, 黄杰文, 禹卫东. 高分辨率宽测绘带星载SAR距离向DBF处理[J]. 电子与信息学报, 2011, 33(6): 1510-1514. doi: 10.3724/SP.J.1146.2010.01157.

LI Yang, HUANG Jiewen, and YU Weidong. Range DBF processing for high-resolution wide-swath spaceborne SAR [J]. Journal of Electronics Information Technology, 2011, 33(6): 1510-1514. doi: 10.3724/SP.J.1146.2010.01157.

SUESS M and WIESBECK W. Side-looking synthetic aperture radar system[P]. Euro, Patent EP1241487 A1, 2001.

LIN Z and LIU Y. Design of arbitrary complex coefficient WLS FIR filters with group delay constraints[J]. IEEE Transactions on Signal Processing, 2009, 57(8): 3274-3279. doi: 10.1109/TSP.2009.2020372 .

周青松, 张剑云, 李小波. 序列锥规划方法对于群延时及L1范数约束的数字滤波器优化设计[J]. 电路与系统学报, 2011, 16(1): 52-57.

ZHOU Qingsong, ZHANG Jianyun, and LI Xiaobo. Optimal design of digital filter with group delay and L1 norm constraints using sequential cone programming[J]. Journal of Circuits and Systems, 2011, 16(1): 52-57.

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