Zobrazeno 1 - 10
of 155
pro vyhledávání: '"delay Doppler map (DDM)"'
Autor:
Cheng Jing, Weiqiang Li, Wei Wan, Feng Lu, Xinliang Niu, Xiuwan Chen, Antonio Rius, Estel Cardellach, Serni Ribó, Baojian Liu, Zhizhou Guo, Yang Nan
Publikováno v:
Geo-spatial Information Science, Vol 27, Iss 3, Pp 638-652 (2024)
In this paper, we will conclude the results of Bufeng-1 (BF-1) A/B data processing, calibration workflow, and validation of the calibrated sea surface winds, land surface soil moisture, and sea surface height measurements. Since 2019, the BF-1 missio
Externí odkaz:
https://doaj.org/article/5394b37f4fe449fda3add86cbb7096ea
Publikováno v:
Remote Sensing, Vol 16, Iss 15, p 2793 (2024)
Vegetation water content (VWC) is a crucial parameter for evaluating vegetation growth, climate change, natural disasters such as forest fires, and drought prediction. Spaceborne global navigation satellite system reflectometry (GNSS-R) has become a
Externí odkaz:
https://doaj.org/article/59f2e75937614e7b8da3f8b7688eb714
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 2121-2133 (2023)
The receive antenna gain is needed to accurately calibrate the normalized bistatistic radar cross section measured by the BF-1 mission, which is a global navigation satellite system reflectometry (GNSS-R) constellation of two microsatellites and the
Externí odkaz:
https://doaj.org/article/2561a72392144eaeaf7bbb27812e089e
Publikováno v:
Geo-spatial Information Science, Vol 0, Iss 0, Pp 1-13 (2022)
This paper presents the TDS-1 GNSS reflectometry wind Geophysical Model Function (GMF) response to GPS block types. The observables were extracted from Delay Doppler Maps (DDMs) after taking the receiver antenna gains effects and GNSS-R geometry effe
Externí odkaz:
https://doaj.org/article/cbd73cdeedc94432bd37464457043b10
Akademický článek
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Publikováno v:
Geoscience Letters, Vol 7, Iss 1, Pp 1-9 (2020)
Abstract The soil freeze/thaw processes have a significant impact on the surface energy and moisture balance, which play a key role in ecosystem diversity and productivity. The air-/space-borne Global Navigation Satellite System (GNSS)-Reflectometry
Externí odkaz:
https://doaj.org/article/cf09e17732b8422a9c1b976d5684a204
Autor:
Yongchao Zhu, Tingye Tao, Kegen Yu, Zhenxuan Li, Xiaochuan Qu, Zhourun Ye, Jun Geng, Jingui Zou, Maximilian Semmling, Jens Wickert
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 13, Pp 217-226 (2020)
The spaceborne Global Navigation Satellite System-Reflectometry (GNSS-R) delay-Doppler map (DDM) data collected over ocean carry typical feature information about the ocean surface, which may be covered by open water, mixed water/ice, complete ice, e
Externí odkaz:
https://doaj.org/article/70a930bfb3bf4937b3c40341f26bff5b
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 13, Pp 3-13 (2020)
Global navigation satellite system reflectometry (GNSS-R)-derived winds from the cyclone GNSS (CYGNSS) satellite constellation are expected to significantly improve weather forecasts in the tropical region. Delay-Doppler maps (DDMs) acquired by the T
Externí odkaz:
https://doaj.org/article/c9c4688cc73346378101b6853cb625c2
Autor:
Tiziana Beltramonte, Paolo Braca, Maurizio Di Bisceglie, Alessio Di Simone, Carmela Galdi, Antonio Iodice, Leonardo M. Millefiori, Daniele Riccio, Peter Willett
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 13, Pp 1385-1399 (2020)
In this article, we carry out a simulation analysis of ship detection via Global Navigation Satellite System-Reflectometry (GNSS-R) delay-Doppler map (DDM). The GNSS-R DDM simulator used here is a modified version of an algorithm conceived for the ge
Externí odkaz:
https://doaj.org/article/d0a0971b6f504fb0b1839cd8a8b865a0
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 13, Pp 1740-1751 (2020)
A method for simulating delay-Doppler maps (DDMs) of global navigation satellite system signals reflected from land surfaces with heterogeneous terrain is developed from first principles. The method follows previous work for ocean DDMs in the geometr
Externí odkaz:
https://doaj.org/article/a1431b2ff7ff423dbabc15ecc904910e