Zobrazeno 1 - 10
of 8 465
pro vyhledávání: '"l-band"'
Publikováno v:
GIScience & Remote Sensing, Vol 61, Iss 1 (2024)
The soil moisture products derived from the SMOS (Soil Moisture and Ocean Salinity) and SMAP (Soil Moisture Active Passive) missions have garnered widespread adoption in drought surveillance, meteorological/climatic forecasting, and hydrological inve
Externí odkaz:
https://doaj.org/article/35050c8f6e5645f3baa1eb7d54eb2319
Autor:
Juliette Ortet, Arnaud Mialon, Yann Kerr, Alain Royer, Aaron Berg, Julia Boike, Elyn Humphreys, François Gibon, Philippe Richaume, Simone Bircher-Adrot, Azza Gorrab, Alexandre Roy
Publikováno v:
International Journal of Digital Earth, Vol 17, Iss 1 (2024)
Soil Moisture (SM) is a key parameter in northern Arctic and sub-Arctic (A-SA) environments that are highly vulnerable to climate change. We evaluated six SM satellite passive microwave datasets using thirteen ground-based SM stations across Northwes
Externí odkaz:
https://doaj.org/article/1a781428875d42b590b6905329d9c0fb
Autor:
Michelle Stern, Ryan Ferrell, Lorraine Flint, Melina Kozanitas, David Ackerly, Jack Elston, Maciej Stachura, Eryan Dai, James Thorne
Publikováno v:
Frontiers in Remote Sensing, Vol 5 (2024)
Soil moisture maps provide quantitative information that, along with climate and energy balance, is critical to integrate with hydrologic processes for characterizing landscape conditions. However, soil moisture maps are difficult to produce for natu
Externí odkaz:
https://doaj.org/article/d76f7e7ee0fd4088b82c3cd6d5ea9659
Publikováno v:
Journal of Telecommunications and Information Technology, Vol 4, Iss 4 (2024)
This article describes the design of an all-metal combline coaxial cavity diplexer. The device is based on a Y-shaped star-resonant junction which allows to achieve a compact design by positioning the two channels in an in-line and side-by-side arran
Externí odkaz:
https://doaj.org/article/24bf271a0c44449abe20c8849059b1c3
Publikováno v:
Haiyang Kaifa yu guanli, Vol 41, Iss 6, Pp 15-34 (2024)
The L-band microwave radiative transfer model can simulate the physical propagation process of microwave radiation signals in the Arctic ice and snow, and serves as an effective tool to invert the snow thickness of the Arctic ice. However, at present
Externí odkaz:
https://doaj.org/article/778cbabcd7564826b789591b578b9281
Publikováno v:
天地一体化信息网络, Vol 5, Pp 53-62 (2024)
At present, the frequency of non-geostationary orbit(NGSO) mobile satellite service is becoming more and more tense.Aimed at the complicated problem of frequency coordination of mobile direct connection to NGSO satellite service, firstly, an analysis
Externí odkaz:
https://doaj.org/article/00b0da5b4bef4d859f086626767aafc5
Publikováno v:
Xibei Gongye Daxue Xuebao, Vol 42, Iss 2, Pp 362-367 (2024)
The L-band digital aeronautical communication system (LDACS) is one of the essential infrastructures for future aviation broadband communication. To address the problem of interference from adjacent high-power distance measuring equipment (DME) signa
Externí odkaz:
https://doaj.org/article/8e780e6b55a34371923924481158c573
Akademický článek
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Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 16592-16607 (2024)
In the soil moisture active passive (SMAP) mission's soil moisture retrieval algorithms, the effects of surface roughness and vegetation scattering on the brightness temperature are conventionally modeled using time-invariant parameters: roughness in
Externí odkaz:
https://doaj.org/article/e96c7973370d434baf590e677f412c9c
Autor:
Foad Brakhasi, Jeffrey P. Walker, Jasmeet Judge, Pang-Wei Liu, Xiaoji Shen, Nan Ye, Xiaoling Wu, In-Young Yeo, Nithyapriya Boopathi, Edward Kim, Yann H. Kerr, Thomas J. Jackson
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 2570-2585 (2024)
P-band radiometry has been demonstrated to have a deeper sensing depth than L-band, making the consideration of multilayer microwave interactions necessary. In addition, the scattering and phase interference effects are different at the P-band, requi
Externí odkaz:
https://doaj.org/article/6b1f385ce8754afe8fd441c92543dba0