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The performance of spaceborne synthetic aperture radar (SAR) at lower frequencies, such as VHF/UHF bands, is affected by ionosphere effects, especially Faraday rotation (FR). A quantitative analysis of Faraday rotation impacts on spaceborne VHF/UHF-SAR image formation is presented in this paper. The error models of FR resulting from calm Total Electron Content (TEC) and fluctuant TEC, for Linearly...
The focus for geophysical parameter retrieval from space, such as soil moisture, is shifting towards lower frequencies allowing better penetration through vegetation (rendering it less visible) and into the soil (allowing soil moisture sensing into depth). But the ionosphere becomes increasingly opaque at lower frequencies, which intensifies the need for mitigation of ionospheric effects to allow...
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