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- W2775342532 abstract "It is important to closely monitor the state of the world's wetlands, as climate change and human encroachment in a rapid global urbanization trend threaten to cause large-scale wetland collapse. Because wetlands are often difficult to observe in situ, remote sensing is the only viable way to map wetland extent globally. However, current remote sensing methods suffer limitations in capturing wetland extent, and more importantly, wetland dynamics at appropriate spatial and temporal scales. GNSS-Reflectometry could help fill the current observation gap, as experimental data show that ground-reflected GNSS signals are very sensitive to changes in inundated areas. Furthermore, because this technique only requires a custom developed receiver and antenna system, a constellation of such instruments can potentially be launched at relatively low cost, providing global observations at sub-daily intervals. One challenge remains, however, which is quantitatively formulating the geophysical product of reflections over the land surface in various states of inundation. Here, we use a novel reflection dataset, derived from the SMAP radar receiver, to elucidate the sensitivity of reflections to small land surface features and their seasonal variations. Additionally, we quantify the dynamic range of reflections over both open and closed wetlands, and suggest an algorithm for wetland type classification." @default.
- W2775342532 created "2017-12-22" @default.
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- W2775342532 date "2017-07-01" @default.
- W2775342532 modified "2023-09-30" @default.
- W2775342532 title "Global Navigation Satellite System Reflectometry (GNSS-R) algorithms for wetland observations" @default.
- W2775342532 cites W1923563908 @default.
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- W2775342532 doi "https://doi.org/10.1109/igarss.2017.8127155" @default.
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