Zobrazeno 1 - 10
of 328
pro vyhledávání: '"Qingjun Zhang"'
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
Autor:
Feixiang Tang, Yifei Ji, Yongsheng Zhang, Zhen Dong, Zhaokai Wang, Qingjun Zhang, Bingji Zhao, Heli Gao
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 842-854 (2024)
An L-band geosynchronous synthetic aperture radar (GEO SAR) is susceptible to the ionospheric scintillation induced by ionospheric irregularities due to its lower carrier frequency. In particular, the drifting characteristic of the ionospheric irregu
Externí odkaz:
https://doaj.org/article/59439480512d4212bc8c86a3272edb29
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 68-83 (2024)
In recent years, geosynchronous synthetic aperture radar (GEO SAR) has attracted many scientists to carry out relevant research. Its research is in-depth and gradually maturing. However, conventional GEO SAR has the problems of great influence by the
Externí odkaz:
https://doaj.org/article/4160d077266b4ca7a8386de3a1c4e432
Publikováno v:
Forest Ecosystems, Vol 11, Iss , Pp 100238- (2024)
Terrestrial laser scanning (TLS) accurately captures tree structural information and provides prerequisites for tree-scale estimations of forest biophysical attributes. Quantifying tree-scale attributes from TLS point clouds requires segmentation, ye
Externí odkaz:
https://doaj.org/article/2ec7f0c303164e99bf2a35c4ed33b21b
Autor:
Liqiang Zhang, Qingxia Li, Haitao Qiu, Qingjun Zhang, Yixin Gao, Rong Jin, Rui Wang, Huan Zhang, Zhongkai Wen, Jian Zhang
Publikováno v:
Space: Science & Technology, Vol 4 (2024)
In order to alleviate the impact of radio frequency interference (RFI) on the accuracy of ocean salinity satellite remote sensing, scholars have proposed various detection and labeling algorithms for RFI based on remote sensing data from the SMOS sat
Externí odkaz:
https://doaj.org/article/78a5e037b59345a1ba8c1b73561accb4
Autor:
Zhongkai Wen, WeiPing Shu, Jin Sha, Huan Zhang, Shubo Liu, Liqiang Zhang, Lei Liu, Tao Wang, Qingjun Zhang, Shuang Li
Publikováno v:
Space: Science & Technology, Vol 4 (2024)
The distribution and change of sea surface salinity (SSS) have an important influence on the sea dynamic environment, marine ecological environment, global water cycle, and global climate change. Satellite remote sensing is the only practical way to
Externí odkaz:
https://doaj.org/article/a228c9b3762242948cc3e4d22bd4a8c6
Autor:
Lei Liu, Xuetao Dong, Yaodong Liu, Shaozhen Wang, Liudong Wei, Lian Duan, Qingjun Zhang, Kun Zhang
Publikováno v:
Frontiers in Neurology, Vol 14 (2024)
AimTo explore the predictive value of white blood cell to hemoglobin ratio (WHR) for 30-day mortality in patients with intracerebral hemorrhage (ICH).MethodsIn this cohort study, 2,848 patients with ICH were identified in the Medical Information Mart
Externí odkaz:
https://doaj.org/article/ee57931a80e040ccb48d27becd9bc7b5
Publikováno v:
Remote Sensing, Vol 16, Iss 6, p 971 (2024)
The L band frequency shows high sensitivity to sea surface salinity. More stable brightness temperature (TB) measurements are required for L-band radiometers to reduce salinity retrieval errors than for high-frequency radiometers. Due to the complexi
Externí odkaz:
https://doaj.org/article/d80adc6845d649eab63514a6571e69a8
Publikováno v:
Remote Sensing, Vol 16, Iss 4, p 667 (2024)
Ocean salinity is a pivotal aspect of the ocean dynamic environment. Spaceborne L-band radiometers, like SMOS, Aquarius, and SMAP, offer a comprehensive approach to mapping out large-scale ocean salinity patterns. As China prepares for the launch of
Externí odkaz:
https://doaj.org/article/cbb3355dfd6e4fb5b0b3a78376481a12
Autor:
Qingjun Zhang, Po Wang, Tengwei Wu, Yueyue Zhang, Zexuan Zheng, Shangzhi Zhou, Dong Qian, Xuejuan Wang, Gang Cai
Publikováno v:
Cell Discovery, Vol 8, Iss 1, Pp 1-4 (2022)
Externí odkaz:
https://doaj.org/article/f5cf295c464c4b1eb641a188c828e343