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	An eLoran Signal Cycle Identification Method Based on Joint Time-Frequency Domain 期刊论文 OAI收割 REMOTE SENSING, 2022, 卷号: 14, 期号: 2, 页码: 20 作者: Yan, Wenhe; Dong, Ming; Li, Shifeng; Yang, Chaozhong; Yuan, Jiangbin \| 收藏 \| 浏览/下载：35/0 \| 提交时间：2022/08/15 eLoran cycle identification skywave interference time of arrival spectrum division
	Doppler-robust high-spectrum-efficiency VCM-OFDM scheme for low Earth orbit satellites broadband data transmission 期刊论文 OAI收割 IET COMMUNICATIONS, 2018, 卷号: 12, 期号: 1, 页码: 35-43 作者: Li, Jionghui; Xiong, Weiming; Sun, Geng; Wang, Zhugang; Huang, Yonghui \| 收藏 \| 浏览/下载：77/0 \| 提交时间：2018/03/02 Satellite Ground Stations Satellite Links Radio Receivers Radio Transmitters Ofdm Modulation Modulation Coding Doppler Shift Filtering Theory Doppler-robust High-spectrum-efficiency Vcm-ofdm Scheme Low Earth Orbit Satellites Broadband Data Transmission High-efficiency Satellite-ground Downlink Data Transmission System Limited Spectrum Resource Dynamic Link Conditions Orbital Motion Leo Satellite Variable Coding Modulated Orthogonal Frequency Division Multiplexing Satellite On-board Transmitter Ground Station Receiver Filtered-ofdm Signal Adjustable Codmod Spectral Efficiency Physical Layer Frame Structure Doppler Frequency Shift Compensation Future Gigabit X-band Reliable Satellite-ground Downlink Transmissions
	Holographic polymer Bragg gratings for dense wavelength division multiplexing at 1550nm (EI CONFERENCE) 会议论文 OAI收割 Holography, Diffractive Optics, and Applications II, November 8, 2004 - November 11, 2004, Beijing, China 作者: Wang W.; Wang W. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 Bragg grating has lots of use in many optical field. Especially in dense wavelength division multiplexing system and optical filters and so on. Holographic Bragg grating with 1800 line/mm is fabricated in this experiment. Performances of holographic Bragg gratings are measured in our lab. Results show that this holographic Bragg grating can resolve 0.26nm fine line spectrum. Diffraction efficiency of Bragg grating can get 76% in 1.55m wavelength. Results also show that this kind of holographic Bragg grating may use in DWDM device and can produce fine narrow width spectra.