基于GPS电离层测量的SAR成像补偿技术

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

The Compensation of SAR Imagining Based on GPS Measurement

摘要: 本文在总结电离层中信号传播时延特性的基础上,提出了一种使用基于GPS电离层测量总电子含量(TEC)改进SAR成像的方法。由模拟的低频SAR经过电离层后的成像情况证明,电离层的影响十分严重。当使用GPS测量的路径TEC进行校正后,可以重新得到比较理想的成像效果。
- 电离层 /
- SAR /
- TEC
Abstract: Ionospheric delay is one of the most important resources in satellite navigation systems, and TEC map reconstruction is the major way to eliminate the delay effect of the satellite navigation systems. Basing on the ionospheric delay effect, there is a way to improve the quality of SAR imaging by using the TEC of the propagation grid. The simulation of the low frequency SAR imaging shows an intense effect of the ionospheric delay. The SAR imaging gets an improvement correcting by the TEC of the propagation area.
- Ionosphere /
- SAR /
- Total Electron Content

[1]	QUEGAN S, GREEN J,ZAN DONASCHNEIDER R. Quantifying and correcting ionospheric effects on PBand SAR images［C］／／Geoscience and Remote Sensing Symposium, 2008.
[2]	XU Z W, WU J, WU Z S. Potential effects of the ionosphere on spacebased SAR imaging［J］. IEEE Transition. Antennas Propagate, 2008,56(7):1968-975.
[3]	QUEGAN S, LAMONT J. Ionospheric and troposphere effects on synthetic aperture radar performance［J］. International Journal of Remote Sensing. 1986:525-539.
[4]	MEYER F J, BAMLER R, N. JAKOWSKI N, et al. The potential of lowfrequency SAR systems for mapping ionospheric TEC distributions［J］. IEEE Geoscience and Remote Sensing Letters,2006, 3(4):560-564.
[5]	SNOEIJ P, VAN DER VALK N, BOOM E, et al.Effect of the ionosphere on Pband spaceborne SAR images［C］／／In Proceedings of IGARSS, Sydney, Australia, 2001.
[6]	IAN G Cumming,Frank H Wong. Digital processing of synthetic aperture radar data［M］. Artech House Inc, 2004.