| 基于GPS电离层测量的SAR成像补偿技术 |
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| 引用本文： | 吴学森,张发祥,王登亮,甄卫民.基于GPS电离层测量的SAR成像补偿技术[J].全球定位系统,2017,42(2):37. |
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| 作者姓名： | 吴学森 张发祥 王登亮 甄卫民 |
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| 作者单位： | 中国电波传播研究所,山东 青岛 266107 |
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| 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。
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| 关 键 词： | 电离层 SAR TEC |
| 收稿时间： | 2017-02-15 |
The Compensation of SAR Imagining Based on GPS Measurement |
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| Affiliation: | China Research Institute of Radiowave Propagation, Qingdao 266107, China |
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| 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. |
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