Zobrazeno 1 - 10
of 446
pro vyhledávání: '"GF-3"'
Publikováno v:
Geo-spatial Information Science, Vol 27, Iss 5, Pp 1405-1423 (2024)
An accurate Modulation Transfer Function (MTF) is essential for Synthetic Aperture Radar (SAR) wave spectra retrieval. This study aimed to investigate the performance of a quad-polarized wave retrieval algorithm based on fully polarimetric SAR image
Externí odkaz:
https://doaj.org/article/f5d62942fcb645b5a572d483ed0e02bb
Publikováno v:
International Journal of Digital Earth, Vol 17, Iss 1 (2024)
ABSTRACTThis study aimed at alleviating the problems of unsatisfactory inversion accuracy and weak model stability in LAI remote sensing quantitative inversion. The properties and complex scattering mechanism of SAR data specify the polarization comb
Externí odkaz:
https://doaj.org/article/ec5e1551e92e48739a6d88f416838e94
Publikováno v:
Big Earth Data, Vol 8, Iss 2, Pp 249-273 (2024)
High-resolution observations of short-term changes in sea ice are critical to understanding ice dynamics and also provide important information used in advice to shipping, especially in the Arctic. Although individual satellite sensors provide period
Externí odkaz:
https://doaj.org/article/a257e426cde74891b2b8eff65016940d
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 10938-10955 (2024)
This study presents an innovative approach for estimating the azimuth cutoff wavelength ($\lambda _{c}$) using a multipolarization combination technique to enhance the retrieval of significant wave height (SWH) and wind speed (WS) from Gaofen-3 (GF-3
Externí odkaz:
https://doaj.org/article/6c5f7d7c32624bf69491b8a794b46068
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 2115-2132 (2024)
Polarimetric calibration is crucial to ensure the accuracy and reliability of subsequent application results. Since Gaofen-3(GF-3) has been providing polarimetric Synthetic Aperture Radar images for six years, it is necessary to monitor the polarimet
Externí odkaz:
https://doaj.org/article/91b86da1c5b74fd8a9f838393cf3a10f
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 808-816 (2024)
In this article, an intelligent method for inverting wind direction from quad-polarized Gaofen-3 (GF-3) synthetic aperture radar (SAR) images is proposed. Specifically, 11300 acquired in wave (WAV) mode are used to retrieve the wind directions using
Externí odkaz:
https://doaj.org/article/85e66410bac94114bc50e5fb193cfe37
Publikováno v:
Remote Sensing, Vol 16, Iss 9, p 1644 (2024)
This study introduces a new machine learning-based algorithm for the retrieving significant wave height (SWH) using synthetic aperture radar (SAR) images. This algorithm is based on the azimuthal cut-off wavelength and was developed in quad-polarized
Externí odkaz:
https://doaj.org/article/e479e6c85b614311bac95d337e47f78c
Publikováno v:
Leida xuebao, Vol 12, Iss 1, Pp 64-75 (2023)
To refine the geometric parameters of satellite-based SAR images and improve the stereo positioning accuracy, a method of SAR elevation control point extraction combining multistrategy ATLAS data preference and image matching has been developed. This
Externí odkaz:
https://doaj.org/article/d85ac45858c14489ac357df183f644df
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 8520-8534 (2023)
Manual selection of the distribution target and determination of its spatial location is not only time consuming but also has a serious impact on the polarimetric channel imbalances assessment if the area is incorrect. However, the existing automatic
Externí odkaz:
https://doaj.org/article/150653703aa04a24bde2d3a5a5e2a70f
Publikováno v:
International Journal of Digital Earth, Vol 15, Iss 1, Pp 362-380 (2022)
The leaf area index (LAI) is an important agroecological physiological parameter affecting vegetation growth. To apply the genetic algorithms neural network model (GANNM) to the remote sensing inversion of winter wheat LAI throughout the growth cycle
Externí odkaz:
https://doaj.org/article/c895481696f344288284fbbb47fc75a6