Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Dexin ZHAO"'
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 18, Iss 8, Pp 563-570 (2024)
Abstract A dual‐band shared‐aperture antenna array is presented, involving a combined scheme to suppress mutual coupling interference. The proposed array is comprised of a low‐band (LB) antenna, a frequency selective surface (FSS), sixteen high
Externí odkaz:
https://doaj.org/article/6dee2285c2a5494ba545e17b693bab74
Publikováno v:
水下无人系统学报, Vol 32, Iss 1, Pp 97-104 (2024)
The security of underwater acoustic communication networks is an important guarantee for information sharing and cooperative operation of underwater communication. Existing technologies mainly study authentication protocol and data encryption, focusi
Externí odkaz:
https://doaj.org/article/8b9a05d4cd4140f9813f0bcd4b23c193
Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 10, p 1877 (2024)
Classifying modulated signals for non-cooperative underwater acoustic communication is challenging due to signal distortion caused by fading and multipath effects in the underwater acoustic channel. Our proposed method utilizes channel estimation par
Externí odkaz:
https://doaj.org/article/181dbda5c98a4c2a8ebbe17bc22bfbed
Publikováno v:
水下无人系统学报, Vol 31, Iss 2, Pp 229-236 (2023)
Attitude is an essential parameter in autonomous navigation. Existing high-precision navigation sensors are expensive and large. Therefore, miniaturized and low-cost autonomous navigation technologies have become the research focus. Inspired by biomi
Externí odkaz:
https://doaj.org/article/2f69aeefccc8479d81dd5661e5b42bc1
Autor:
Yenny Cubides, Dexin Zhao, Lucas Nash, Digvijay Yadav, Kelvin Xie, Ibrahim Karaman, Homero Castaneda
Publikováno v:
Journal of Magnesium and Alloys, Vol 8, Iss 4, Pp 1016-1037 (2020)
The corrosion susceptibility of recrystallized and un-recrystallized grains in equal channel angular pressed (ECAPed) Mg–9Al–1Zn (AZ91) alloys immersed in chloride containing media was investigated through immersion testing and an electrochemical
Externí odkaz:
https://doaj.org/article/f797302d627149f6aa59f43a9ff3dfe2
Publikováno v:
Materials Research Letters, Vol 8, Iss 9, Pp 328-334 (2020)
Shear banding is an important deformation and failure mechanism in metallic systems, especially at high-rate straining. Dynamic recrystallization was often reported to account for the refined microstructure of shear bands but rarely confirmed using d
Externí odkaz:
https://doaj.org/article/1ec70a6447684a1b9301c0f89bcb5f7b
Publikováno v:
Atmosphere, Vol 14, Iss 2, p 228 (2023)
There are distinct differences between radiation characteristics of volcanic ash and meteorological clouds, and conventional retrieval methods for cloud base height (CBH) of the latter are difficult to apply to volcanic ash without substantial parame
Externí odkaz:
https://doaj.org/article/2c4c77867fc54b15b1eb58f6f103f207
Publikováno v:
Applied Sciences, Vol 12, Iss 21, p 10804 (2022)
The underwater acoustic target signal is affected by factors such as the underwater environment and the ship’s working conditions, causing the generalization of the recognition model is essential. This study is devoted to improving the generalizati
Externí odkaz:
https://doaj.org/article/eb29efefaf334d90bad5a1053c660405
Publikováno v:
Remote Sensing, Vol 13, Iss 12, p 2251 (2021)
Global cloud thermodynamic phase (CP) is normally derived from polar-orbiting satellite imaging data with high spatial resolution. However, constraining conditions and empirical thresholds used in the MODIS (Moderate Resolution Imaging Spectroradiome
Externí odkaz:
https://doaj.org/article/4656307cad4a4a4c9e94e8108f619d39
Publikováno v:
Entropy, Vol 15, Iss 9, Pp 3877-3891 (2013)
Applying the particle filter (PF) technique, this paper proposes a PF-based algorithm to blindly demodulate the chaotic direct sequence spread spectrum (CDS-SS) signals under the colored or non-Gaussian noises condition. To implement this algorithm,
Externí odkaz:
https://doaj.org/article/9116407b70b741a9abe1b214517f283a