Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Wangzhe LI"'
Autor:
Yu HAI, Ling LIU, Zhongyu LI, Wei PU, Xiaoting WANG, Junjie WU, Wangzhe LI, Ruoming LI, Yulin HUANG, Jianyu YANG
Publikováno v:
Leida xuebao, Vol 13, Iss 2, Pp 485-499 (2024)
Microwave Photonic (MWP) radars have remarkably improved traditional microwave radar hardware architectures using photonics devices. With the exceptional physical properties of photonic devices, MWP radars can emit ultra-wideband, high-linearity, hig
Externí odkaz:
https://doaj.org/article/e93fd29522e44b9fafe6c0573b694396
Publikováno v:
Remote Sensing, Vol 16, Iss 12, p 2158 (2024)
For ultra-high-resolution (UHR) squint spotlight airborne synthetic aperture radar (SAR), the severe range-azimuth coupling caused by squint mode and the spatial and frequency dependence of the motion error brought by ultra-wide bandwidth both make i
Externí odkaz:
https://doaj.org/article/788b50cf4f6949b08bbc14f309600912
Publikováno v:
Micromachines, Vol 15, Iss 4, p 516 (2024)
Electro-optic modulation devices are essential components in the field of integrated optical chips. High-speed, low-loss electro-optic modulation devices represent a key focus for future developments in integrated optical chip technology, and they ha
Externí odkaz:
https://doaj.org/article/7862e369a7224d94896798bf2783eb47
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 16, Pp 2221-2236 (2023)
In the area of synthetic aperture radar (SAR), the ultrahigh resolution is always a continuous pursuit for researchers. To realize ultrahigh resolution, microwave photonics technology is an excellent solution since it has advantages of low transmissi
Externí odkaz:
https://doaj.org/article/74f998d7908b4b0c914152818b4b79a0
Publikováno v:
Remote Sensing, Vol 15, Iss 23, p 5569 (2023)
The efficiency and accuracy of target recognition in synthetic aperture radar (SAR) imagery have seen significant progress lately, stemming from the encouraging advancements of automatic target recognition (ATR) technology based on deep learning. How
Externí odkaz:
https://doaj.org/article/a402b27f5c5a47a59cee864ebfb23a16
Publikováno v:
Photonics, Vol 10, Iss 4, p 421 (2023)
Fiber transfer delay (FTD) variations influence the coherence of distributed radars with fiber networks, resulting in a performance degradation in target detecting and imaging. To measure and compensate for the variation, a phase-derived ranging base
Externí odkaz:
https://doaj.org/article/d3b0d10b997c41ad8ebb09980da6eb83
Publikováno v:
IEEE Access, Vol 9, Pp 164903-164911 (2021)
A pulse radar based on photonics-assisted signal generation and stretch processing is proposed and experimentally demonstrated. A radio frequency (RF) linear frequency modulated (LFM) pulse signal is generated by photonic frequency doubling from an i
Externí odkaz:
https://doaj.org/article/ae959d5158374332ba2f739669bdec6e
Autor:
Lichao Zhang, Guangyang Gou, Jiamin Chen, Wangzhe Li, Weichao Ma, Ruoming Li, Junming An, Yue Wang, Yuanyuan Liu, Wei Yan, Tianjun Ma, Chunxiu Liu, Jianjun Cheng, Zhimei Qi, Ning Xue
Publikováno v:
Micromachines, Vol 14, Iss 2, p 458 (2023)
A miniature Fourier transform spectrometer is proposed using a thin-film lithium niobate electro-optical modulator instead of the conventional modulator made by titanium diffusion in lithium niobate. The modulator was fabricated by a contact lithogra
Externí odkaz:
https://doaj.org/article/ceacc8ca9f074555837d8b2edf51bbaa
Publikováno v:
Remote Sensing, Vol 14, Iss 8, p 1793 (2022)
Target recognition in synthetic aperture radar (SAR) imagery suffers from speckle noise and geometric distortion brought by the range-based coherent imaging mechanism. A new SAR target recognition system is proposed, using a SAR-to-optical translatio
Externí odkaz:
https://doaj.org/article/2fe5fc4d0bcb49f2845d83b5b1d9d967
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 6, Pp 1-8 (2017)
Subsampling can directly acquire a passband within a broad radio frequency (RF) range, avoiding down-conversion and low-phase-noise tunable local oscillation. However, subsampling suffers from band folding and self-image interference. In this paper,
Externí odkaz:
https://doaj.org/article/1a73aeaf529945b88c401c24aa6ecfd9