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您的检索式：作者名="Hongyin Xia"
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| 1 | ISAR imaging based on improved phase retrieval algorithm显示文摘Traditional inverse synthetic aperture radar(ISAR)imaging methods for maneuvering targets have low resolution and poor capability of noise suppression. An ISAR imaging method of maneuvering targets based on phase retrieval is proposed,which can provide a high-resolution and focused map of the spatial distribution of scatterers on the target. According to theoretical derivation, the modulus of raw data from the maneuvering target is not affected by radial motion components for ISAR imaging system, so the phase retrieval algorithm can be used for ISAR imaging problems. However, the traditional phase retrieval algorithm will be not applicable to ISAR imaging under the condition of random noise. To solve this problem, an algorithm is put forward based on the range Doppler(RD) algorithm and oversampling smoothness(OSS) phase retrieval algorithm. The algorithm captures the target information in order to reduce the influence of the random phase on ISAR echoes, and then applies OSS for focusing imaging based on prior information of the RD algorithm. The simulated results demonstrate the validity of this algorithm, which cannot only obtain high resolution imaging for high speed maneuvering targets under the condition of random noise, but also substantially improve the success rate of the phase retrieval algorithm. | SHI Hongyin XIA Saixue TIAN Ye | 2018 | Journal of Systems Engineering and Electronics2018，29，2： | 5 |
| 2 | Optical spectroscopy and crystal-field strength of Cr^(3+) in various solid matrixes显示文摘Cr^(3+): BeAl_2O_4 水晶, Cr^(3+): LiNbO_3 水晶,和 ZnO-Al_2O_3-SiO_2glass-ceramic 被 Czochralski 技术获得,布里奇曼方法,并且融化分别地处理。上述 Cr^(3+)-incorporatedsolid-state 材料的光吸收和排放系列被记录。为种 high-qualityCr^(3+) 的技术参数: BeAl_2O_4 和 Cr^(3+): LINbO_3 晶体被获得。结果显示 Cr^(3+) 的光吸收和荧光系列在各种各样的矩阵显示出许多差别。Thesharp 线排出物在 Cr^(3+) 被观察: BeAl_2O_4 和 Cr^(3+): LiNbO_3 晶体。为在不同矩阵的 Cr^(3+) 的 Thecrystal 地参数(D_q ) 从他们的相应系列被计算。它被显示那 Cr^(3+): BeAl_2O_4 和 Cr^(3+): LiNbO_3 属于 thehigh 地地点水晶,当时 Cr^(3+): ZnO-Al_2O_3-SiO_2 玻璃并且眼镜陶器属于 theweak 地地点水晶。 | XIA Haiping WANG Jinhao WANG Hongyin ZHANG Jianli ZHANG Yuepin XU Tiefeng | 2006 | Rare Metals2006，25，1： | 2 |
| 3 | Template-assisted formation of atomically dispersed iron anchoring on nitrogen-doped porous carbon matrix for efficient oxygen reduction显示文摘Isolated active metal atoms anchored on nitrogen-doped carbon matrix have been developed as the efficient catalyst for accelerating sluggish reaction kinetics of oxygen reduction reaction(ORR).The facile rational structure engineering with abundant isolated active metal atoms is highly desirable but challenging.Herein,we demonstrate that atomically dispersed Fe sites(Fe-N4 moieties)on the hierarchical porous nitrogen-doped carbon matrix(Fe-SA-PNC)for high ORR activity can be achieved by a dual-template assisted strategy.By thermal decomposition of NH_(4)Cl template,the nitrogen-doped carbon matrix is generated based on the interaction with carbon precursor of citric acid.Meanwhile,the introduction of NaCl template facilitates the formation of hierarchical porous structures,which enable more active sites exposed and improve the mass transfer.Interestingly,the dual-template strategy can inhibit the formation of iron carbide nanoparticles(NPs)by generating porous structures and avoiding of the rapid loss of nitrogen during pyrolysis.The as-made Fe-SA-PNC catalysts with well-defined Fe-N_(4)active sites exhibit highly efficient ORR activity with a half-wave potential of 0.838 V versus the reversible hydrogen electrode,as well as good stability and methanol tolerance,outperforming the commercial Pt/C.The zinc-air battery(ZAB)constructed by Fe-SA-PNC also shows a higher peak power density and specific discharging capacity than that of Pt-based ZAB.The present work provides the facile strategy for tailoring nitrogen doping and porous structures simultaneously to prevent the formation NPs for achieving the well-dispersed and accessible single-atom active sites,paving a new way to design efficient electrocatalysts for ORR in fuel cells. | Ruoyu Pang Hongyin Xia Jing Li Erkang Wang | 2023 | Nano Research2023，16，4： | 0 |
| 4 | Recent Developments of Atomically Dispersed Metal Electrocatalysts for Oxygen Reduction Reaction显示文摘Oxygen reduction reaction(ORR)is the pivotal portion in many electrochemical energy conversion and storage technologies.However,the complex mechanisms and sluggish kinetics of ORR have also become one of the key issues hindering the development and application of these technologies. | Ruoyu Pang Hongyin Xia Jing Li Shaojun Guo Erkang Wang | 2023 | Chinese Journal of Chemistry2023，41，5： | 0 |
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