Trans-ionospheric distorsion in satellite VHF-band SAR systems

Trans-ionospheric distorsion in satellite VHF-band SAR systems
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DOI：
10.1109/igarss.2000.858059
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发表时间：
2000-07
期刊：
IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120)
影响因子：
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通讯作者：
L. Ulander;P. Frolind;A. Gustavsson;H. Hellsten;M. Herberthson;T. Jonsson;B. Larsson;G. Stenstrom
L. Ulander;P. Frolind;A. Gustavsson;H. Hellsten;M. Herberthson;T. Jonsson;B. Larsson;G. Stenstrom
中科院分区：
其他
文献类型：
--
作者：
L. Ulander;P. Frolind;A. Gustavsson;H. Hellsten;M. Herberthson;T. Jonsson;B. Larsson;G. Stenstrom

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VHF SAR 图像已被证明是多种民用和军事应用中的强大工具。对于星载仪器来说，电离层效应变得非常显着。 VHF信号失真对SAR成像过程的影响是一个悬而未决的问题。 CARABAS-II雷达系统被配置在地面上，用于在SRTM实验期间航天飞机经过的某些场合收集VHF数据。使用双极化天线阵列在 84 MHz 下进行的注册目前正处于评估阶段，目的是检测目标并检查跨电离层信号路径的稳定性。
VHF SAR imagery has proven to be a powerful tool in several civilian and military applications. For a spaceborne instrument the ionospheric effects become significant. The impact of the VHF signal distortion on the SAR image formation process is an open question. The CARABAS-II radar system was configured on ground to collect VHF data at some of the occasions when the space shuttle was passing by during the SRTM experiment. The registrations at 84 MHz using a dual-polarisation antenna array are now in the phase of evaluation, with the objective to detect the target and examine the stability for a trans-ionospheric signal path.