Search Results - "Sun, Hengqing"

Design of an Ultrawideband Ionosonde by Sun, Hengqing, Yang, Guobin, Cui, Xiao, Zhu, Peng, Jiang, ChunHua

“…In this letter, an ultrawideband ionospheric sounding system was designed for ionospheric research and communication channel management. The frequency band of…”
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Application of the oblique ionogram as vertical ionogram by Chen, Gang, Zhao, ZhengYu, Zhang, YuanNong, Yang, GuoBin, Zhou, Chen, Huang, Shuo, Li, Ting, Li, Ning, Sun, HengQing

“…The vertical ionogram can provide the important ionospheric parameters, such as critical frequency, virtual height and electron density, for ionospheric…”
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Numerical Simulation of the Radar Cross-Section of UHV/EHV Power Lines Illuminated by X-, C-, L-, and P-Band Spaceborne SAR by Shi, Shuzhu, Wang, Shiwei, Li, Tao, Liu, Yan, Sun, Hengqing

“…Many spaceborne synthetic aperture radars (SARs), which operate separately in the X, C, and L bands, have been employed to monitor ultra-high-voltage (UHV) and…”
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Fetal agenesis of the corpus callosum: Clinical and genetic analysis in a series of 40 patients by Sun, Hengqing, Li, Ke, Wang, Lu, Zhao, Lijuan, Yan, Chenyu, Kong, Xiangdong, Liu, Ning

“…This study aimed to explore the genetic causes of agenesis of the corpus callosum (ACC) and assess the utility of karyotype analysis, copy number variation…”
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Simulation on the Electromagnetic Environment in the Carrier of Airborne VLF Wire Antennas by Yong, Liu, Fangshun, Deng, Hengqing, Sun, Qisi, Wang, Liyuan, Su

“…The airborne VLF (Very low frequency) transmitting system is commonly used in underwater communication with a very high power, which produces a complement…”
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An automatic scaling technique for obtaining F2 parameters and F1 critical frequency from vertical incidence ionograms by Jiang, Chunhua, Yang, Guobin, Zhao, Zhengyu, Zhang, Yuannong, Zhu, Peng, Sun, Hengqing

“…Recent advances in computing technologies have renewed interest in the intelligent systems for automatic interpretation of ionograms, images obtained by remote…”
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Gravity waves and spread Es observed during the solar eclipse of 22 July 2009 by Chen, Gang, Zhao, Zhengyu, Zhang, Yuannong, Yang, Guobin, Zhou, Chen, Huang, Shuo, Li, Ting, Li, Ning, Sun, Hengqing

“…During the total solar eclipse of 22 July 2009, two ground‐based high‐frequency radio systems were applied to observe the ionospheric variations over Wuhan,…”
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A method for the automatic calculation of electron density profiles from vertical incidence ionograms by Jiang, Chunhua, Yang, Guobin, Zhao, Zhengyu, Zhang, Yuannong, Zhu, Peng, Sun, Hengqing, Zhou, Chen

“…Vertical incidence ionograms indicate ionospheric characteristics over the ionosonde station, from which electron density profiles can be derived. This paper…”
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Automatic scaling of the sporadic E layer and removal of its multiple reflection and backscatter echoes for vertical incidence ionograms by Jiang, Chunhua, Zhang, Yuannong, Yang, Guobin, Zhu, Peng, Sun, Hengqing, Cui, Xiao, Song, Huan, Zhao, Zhengyu

“…This paper presents a method for automatically scaling the sporadic E (Es) layer and removing its multiple reflection and backscatter echoes for vertical…”
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F region electron density profile inversion from backscatter ionogram based on international reference ionosphere by Zhu, Peng, Zhou, Chen, Zhang, Yuannong, Yang, Guobin, Jiang, Chunhua, Sun, Hengqing, Cui, Xiao

“…Ionospheric backscatter sounding transmits HF (3–30MHz) radio wave obliquely into ionosphere and receives echoes backscattered from remote ground. Due to the…”
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Comparison of the Kriging and neural network methods for modeling foF2 maps over North China region by Jiang, Chunhua, Zhou, Chen, Liu, Jing, Lan, Ting, Yang, Guobin, Zhao, Zhengyu, Zhu, Peng, Sun, Hengqing, Cui, Xiao

“…•Kriging is used to model foF2 maps over North China.•Neural network is used to model foF2 over North China.•The comparison between these two methods is…”
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Genetic analysis of a Chinese pedigree affected with Branchio-oculo-facial syndrome and a literature review by Li, Ke, Sun, Hengqing, Guo, Yu, Sun, Gege, Duan, Huikun, Kong, Xiangdong, Liu, Ning

“…To explore the genetic etiology of a Chinese pedigree affected with Branchio-oculo-facial syndrome (BOFS) and summarize the prenatal phenotype of BOFS…”
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An automatic scaling technique for obtaining F sub(2) parameters and F sub(1) critical frequency from vertical incidence ionograms by Jiang, Chunhua, Yang, Guobin, Zhao, Zhengyu, Zhang, Yuannong, Zhu, Peng, Sun, Hengqing

“…Recent advances in computing technologies have renewed interest in the intelligent systems for automatic interpretation of ionograms, images obtained by remote…”
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An automatic scaling technique for obtaining F 2 parameters and F 1 critical frequency from vertical incidence ionograms by Jiang, Chunhua, Yang, Guobin, Zhao, Zhengyu, Zhang, Yuannong, Zhu, Peng, Sun, Hengqing

“…Abstract Recent advances in computing technologies have renewed interest in the intelligent systems for automatic interpretation of ionograms, images obtained…”
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Gravity waves and spread Es observed during the solar eclipse of 22 July 2009: GW AND SPREAD Es IN ECLIPSE by Chen, Gang, Zhao, Zhengyu, Zhang, Yuannong, Yang, Guobin, Zhou, Chen, Huang, Shuo, Li, Ting, Li, Ning, Sun, Hengqing

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A Method of MSK Signal Phase De-mapping Based on Maximum Likelihood Squared Timing by Sun, Hengqing, Liu, Yong, Liu, Xiaolin, Min, Sijie, Guo, Yue, Hou, Yuesheng

“…According to the phase continuity of Minimum shift keying (MSK) signal, this paper proposes a method of phase de-mapping based on maximum likelihood squared…”
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