Zobrazeno 1 - 10
of 4 482
pro vyhledávání: '"Lü Xiao"'
Publikováno v:
Yankuang ceshi, Vol 40, Iss 2, Pp 273-284 (2021)
BACKGROUND During rapid urbanization of cities in the Beijing-Tianjin-Hebei Region, the extensive economic development mode of 'high energy consumption, high pollution and high emission' has caused a series of atmospheric pollution problems. It is cr
Externí odkaz:
https://doaj.org/article/d13413fa7b3045659842da211c007afc
Motived by the accumulated experimental results on three-body charmed $B$ decays with resonance contributions in Babar, LHCb and Belle (II), we systematically analyze $B_{(s)} \to D_{(s)} (V \to) P_1 P_2 $ decays with $V$ representing a vector resona
Externí odkaz:
http://arxiv.org/abs/2406.00373
Inner edge state with spin and valley degrees of freedom is a promising candidate to design a dissipationless device due to the topological protection. The central challenge for the application of inner edge state is to generate and modulate the pola
Externí odkaz:
http://arxiv.org/abs/2311.13758
Publikováno v:
口腔疾病防治, Vol 24, Iss 7, Pp 386-389 (2016)
Objective To explore the clinical results of reconstruction the defects with the supraclavicular artery island flap (SCAIF) following ablation of tongue squamous cell carcinoma (TSCC).Methods Retrospective analysis was carried out with twelve patient
Externí odkaz:
https://doaj.org/article/e56ffdc085f849aca2e4f51ef8d9e1de
Publikováno v:
Leida xuebao, Vol 4, Iss 2, Pp 172-177 (2015)
A new method of Radar Cross Section (RCS) measurement based on near-field imaging of cylindrical scanning surface is proposed. The method is based on the core assumption that the target consists of ideal isotropic scattered centers. Three-dimensional
Externí odkaz:
https://doaj.org/article/1922fd33d5db40ab9b6de30e121d8109
Autor:
Zhao Yong-ke, Lü Xiao-de
Publikováno v:
Leida xuebao, Vol 3, Iss 6, Pp 666-674 (2015)
Passive radar exploits an external illuminator signal to detect targets. It has the advantages of silence, anti-interference, and counter-stealth ability. In most cases, direct and multipath clutters should be suppressed first. Then coherent detectio
Externí odkaz:
https://doaj.org/article/85d867f7a5ac4606ab3d4fd40db020a5
Publikováno v:
Leida xuebao, Vol 2, Iss 4, Pp 422-429 (2013)
Radar low-elevation estimation performance in the VHF band is severely influenced in the presence of multipath. To deal with this problem, this study first analyzes general MUSIC (MUltiple SIgnal Classification) and other algorithms, pointing out tha
Externí odkaz:
https://doaj.org/article/c3b28a91817c43a58e95378b9a056019
Publikováno v:
Leida xuebao, Vol 2, Iss 2, Pp 247-256 (2013)
A novel method of moving targets detection taking Doppler spectrum analysis technique for Passive Coherent Radar (PCR) is provided. After dividing the receiving signals into segments as pulse series, it utilizes the technique of pulse compress and Do
Externí odkaz:
https://doaj.org/article/8bb2c0234f414143a0b14d1bb19078ae
Publikováno v:
Leida xuebao, Vol 1, Iss 4, Pp 380-386 (2012)
This paper gives the performance research on the ambiguity function and resolution of passive radar based on DVB-S (Digital Video Broadcasting-Satellite) signal. The radar system structure and signal model of DVB-S signal are firstly studied, then th
Externí odkaz:
https://doaj.org/article/12ee1c961f1843b3b221261114e05ac0