Zobrazeno 1 - 10
of 2 121
pro vyhledávání: '"Radar altimeter"'
Autor:
Hoyeon Shi, Rasmus Tonboe, Sang‐Moo Lee, Gorm Dybkjær, Byung‐Ju Sohn, Suman Singha, Fabrizio Baordo
Publikováno v:
Earth and Space Science, Vol 11, Iss 10, Pp n/a-n/a (2024)
Abstract CryoSat‐2 has been successful in observing sea ice thickness from space by providing ice freeboard information. The initial estimate of the ice freeboard, called radar freeboard, is obtained by analyzing the observed waveform using a retra
Externí odkaz:
https://doaj.org/article/b7551ada5e2440f88eb741ede35164f8
Publikováno v:
Frontiers in Marine Science, Vol 11 (2024)
Sea state bias (SSB) is a crucial error of satellite radar altimetry over the ocean surface. For operational nonparametric SSB (NPSSB) models, such as two-dimensional (2D) or three-dimensional (3D) NPSSB, the solution process becomes increasingly com
Externí odkaz:
https://doaj.org/article/af665bfbaec44d7295aa6604402d0bd9
Publikováno v:
IEEE Access, Vol 12, Pp 32554-32568 (2024)
With the growing demand for 5G, many countries have allocated additional spectrum above 3.7 GHz, potentially causing serious interference to radar altimeters operating at the 4.2–4.4 GHz band. Therefore, in this paper, a general mathematical model
Externí odkaz:
https://doaj.org/article/c29b28422cd34025891bb1adb6402172
Autor:
Yanxi Lu, Anna Song, Gaozheng Liu, Longlong Tan, Yushi Xu, Fang Li, Yao Wang, Ge Jiang, Lei Yang
Publikováno v:
Remote Sensing, Vol 16, Iss 16, p 2966 (2024)
Airborne aircrafts are dependent on the Global Navigation Satellite System (GNSS), which is susceptible to interference due to the satellite base-station and cooperative communication. Synthetic aperture radar altimeter (SARAL) provides the ability t
Externí odkaz:
https://doaj.org/article/0d6a86c6f35242879d90d753f42496cf
Publikováno v:
Geodesy and Geodynamics, Vol 14, Iss 3, Pp 212-222 (2023)
The global bathymetry models are usually of low accuracy over the coastline of polar areas due to the harsh climatic environment and the complex topography. Satellite altimetric gravity data can be a supplement and plays a key role in bathymetry mode
Externí odkaz:
https://doaj.org/article/7e6d45996fbd4783a520b08ae50def58
Publikováno v:
Geodesy and Geodynamics, Vol 14, Iss 3, Pp 223-230 (2023)
The calibration of the sea surface height (SSH) measured by satellite altimeters is essential to understand altimeter biases. Many factors affects the construction and maintenance of a permanent calibration site. In order to calibrate Chinese satelli
Externí odkaz:
https://doaj.org/article/ac049ee8ae4245ab966d1b408688ec7e
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 8135-8148 (2023)
The along-track resolution of conventional airborne synthetic aperture radar altimetry (SARAL), where the coherent processing interval (CPI) is the burst length, is not a full resolution due to beam limited. For a fully focused radar altimeter image,
Externí odkaz:
https://doaj.org/article/475b0a9a3e764c93a801ebe11f7c2ea4
Publikováno v:
IET Radar, Sonar & Navigation, Vol 16, Iss 9, Pp 1516-1529 (2022)
Abstract Navigation safety is further emphasised for terrain referenced navigation (TRN) systems used in middle‐range unmanned aerial vehicles (UAVs) than those in cruise missiles flying through mountainous areas, because middle‐range UAVs may fl
Externí odkaz:
https://doaj.org/article/ac7b7e5d1a4440af921ce5fe04ca76e7
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