Submit Manuscript
Peer Review
Editor Work
| Citation: | Wang Pei, Sun Huifeng, Yu Weidong. A Novel Wireless Internal Calibration Method of Spaceborne SAR[J]. Journal of Radars, 2018, 7(4): 425-436. doi: 10.12000/JR18005
|
A Novel Wireless Internal Calibration Method of Spaceborne SAR
doi: 10.12000/JR18005
-
Abstract
Internal calibration measures the changes in amplitude and phase of a system during imaging via the calibration loop built in Synthetic Aperture Radar (SAR). Internal calibration is also an important factor to improve the radiation accuracy of the radar. In this study, a novel wireless internal calibration method with auxiliary antenna is presented, considering that the traditional scheme is inefficient, as the calibration loop cannot cover the path from the TR (Transmitter-Receiver) output to the antenna radiator. The calibration loop also results in a complicated and heavy network. The principle and model of the new method is given, and the TR performance and system transfer function calibration approach are deduced. In addition, error analysis is conducted. The simulation results show that TR amplitude calibration errors caused by the rod of auxiliary antenna are at a 10–3 dB level, and phase calibration errors are obtained from the simulation curve in the paper; transfer function amplitude calibration errors are less than 0.1 dB, and phase calibration errors are not sensitive to the bias of the rod. Finally, the simulation results based on typical parameters of spaceborne SAR and the individual TR calibration experiments confirm the availability and feasibility of this novel method. -
-
References
[1] 邓云凯, 赵凤军, 王宇. 星载SAR技术的发展趋势及应用浅析[J]. 雷达学报, 2012, 1(1): 1–10. DOI: 10.3724/SP.J.1300.2012.20015Deng Yun-kai, Zhao Feng-jun, and Wang Yu. Brief analysis on the development and application of spaceborne SAR[J]. Journal of Radars, 2012, 1(1): 1–10. DOI: 10.3724/SP.J.1300.2012.20015[2] 李春升, 王伟杰, 王鹏波, 等. 星载SAR技术的现状与发展趋势[J]. 电子与信息学报, 2016, 38(1): 229–240. DOI: 10.11999/JEIT151116Li Chun-sheng, Wang Wei-jie, Wang Peng-bo, et al. Current situation and development trends of spaceborne SAR technology[J]. Journal of Electronics&Information Technology, 2016, 38(1): 229–240. DOI: 10.11999/JEIT151116[3] 袁孝康. 星载合成孔径雷达导论[M]. 北京: 国防工业出版社, 2003Yuan Xiao-kang. Introduce to the Spaceborne Sythetic Aperture Radar[M]. Beijing: National Defend Industry Press, 2003[4] 杨汝良, 戴博伟, 谈璐璐, 等. 极化微波成像[M]. 北京: 国防工业出版社, 2017Yang Ru-liang, Dai Bo-wei, Tan Lu-lu, et al.. Polarimetric Microwave Imaging[M]. Beijing: National Defend Industry Press, 2017[5] Brautigam B, Gonzalez J H, Schwerdt M, et al. TerraSAR-X instrument calibration results and extension for TanDEM-X[J]. IEEE Transactions on Geoscience and Remote Sensing, 2010, 48(2): 702–715. DOI: 10.1109/TGRS.2009.2030673[6] Takahashi T, Nakamoto N, Ohtsuka M, et al. On-board calibration methods for mechanical distortions of satellite phased array antennas[J]. IEEE Transactions on Antennas and Propagation, 2012, 60(3): 1362–1372. DOI: 10.1109/TAP.2011.2180303[7] Schwerdt M, Bachmann M, Schrank D, et al.. Precise calibration techniques for complex SAR systems based on active phased array antennas[C]. Proceedings of 2010 IEEE International Symposium on Phased Array Systems and Technology, Waltham, MA, USA, 2010: 695–699. DOI: 10.1109/ARRAY.2010.5613290[8] Schwerdt M, Hounam D, and Stangl M. Calibration concept for the TerraSAR-X instrument[C]. Proceedings of 2003 IEEE International Geoscience and Remote Sensing Symposium, Toulouse, France, 2003, 7: 4509–4511. DOI: 10.1109/IGARSS.2003.1295563[9] Brautigam B, Schwerdt M, Bachmann M, et al.. Individual T/R module characterisation of the TerraSAR-X active phased array antenna by calibration pulse sequences with orthogonal codes[C]. Proceedings of 2007 IEEE International Geoscience and Remote Sensing Symposium, Barcelona, Spain, 2007: 5202–5205. DOI: 10.1109/IGARSS.2007.4424034[10] Luscombe A P. Internal calibration of the radarsat synthetic aperture radar[C]. Proceedings of the 10th Annual International Symposium on Geoscience and Remote Sensing, College Park, Maryland, USA, 1990: 2325–2328. DOI: 10.1109/IGARSS.1990.689003[11] Schied E, Rostan F, Oestergaard A, et al.. The sentinel-1 C-SAR internal calibration[C]. Proceedings of the 8th European Conference on Synthetic Aperture Radar, Aachen, Germany, 2010: 1–3[12] Bast D. Parameters affecting orthogonal SAR transmit and receive module calibration[C]. Committee Earth Observation Satellites Synthetic Aperture Radar (CEOS SAR) Workshop, Ulm, Germany, 2004[13] Deng Y K, Zheng H F, Wang R, et al. Internal calibration for stepped-frequency chirp SAR imaging[J]. IEEE Geoscience and Remote Sensing Letters, 2011, 8(6): 1105–1109. DOI: 10.1109/LGRS.2011.2157889[14] Shnitkin H. Rapid fast Fourier transform phase alignment of an electronically scanned antenna[C]. Proceedings of the 20th European Microwave Conference, Budapest, Hungary, 1990, 1: 247–251. DOI: 10.1109/EUMA.1990.336051[15] 杨震, 杨汝良. HJ-1-C卫星SAR系统的内定标[J]. 雷达学报, 2014, 3(3): 314–319. DOI: 10.3724/SP.J.1300.2014.14028Yang Zhen and Yang Ru-liang. Internal calibration of HJ-1-C satellite SAR system[J]. Journal of Radars, 2014, 3(3): 314–319. DOI: 10.3724/SP.J.1300.2014.14028[16] TIMES. Phase track full line brochure[EB/OL]. http://www.timesmicrowave.com/, 2016[17] 张骏华. 导弹和运载火箭复合材料结构设计指南[M]. 北京: 宇航出版社, 1999: 1, 16ZHANG Junhua. Structural design guid of composite material[M]. Beijing: Aerospace press, 1999: 1, 16[18] 欧阳国恩, 许路, 刘成民, 等. 几种纤维的热膨胀系数实验测定[J]. 宇航材料工艺, 1988(4): 48–53, 32OUYANG Enguo, XU Lu, Liu Chengmin, et al. Experimental determination for coefficients of thermal expansion of several fibers[J]. Aerospace Materials and Technology, 1988(4): 48–53, 32[19] 薛丰廷, 汤心溢. 空间目标瞬态温度特性研究[J]. 激光与红外, 2008, 38(3): 223–225. DOI: 10.3969/j.issn.1001-5078.2008.03.009Xue Feng-ting and Tang Xin-yi. Study on the transient temperature of the space target[J]. Laser&Infrared, 2008, 38(3): 223–225. DOI: 10.3969/j.issn.1001-5078.2008.03.009 -
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 2. Diagram of wireless internal calibration in spaceborne SAR
- Figure 1. Diagram of traditional internal calibration in spaceborne SAR
- Figure 3. Geometry of wireless internal calibration
- Figure 4. Bias of rod position
-
Figure 5.
$S\left( i \right)$ - Figure 6. Calibration errors of TR channel
-
Figure 7. Variation of function
$\delta $ - Figure 8. Calibration results of TR channel
- Figure 9. Reception pattern in elevation