机构

• 长春光学精密机械与... [12]
• 西安光学精密机械研究... [6]
• 遥感与数字地球研究所 [2]
• 高能物理研究所 [2]
• 地理科学与资源研究所 [1]

采集方式

• OAI收割 [23]

内容类型

• 会议论文 [14]
• 期刊论文 [9]

发表日期

• 2020 [1]
• 2016 [2]
• 2015 [2]
• 2012 [4]
• 2011 [3]
• 2010 [7]
• 更多

学科主题

• optics [2]
• Physics [1]

筛选

浏览/检索结果: 共23条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Performance of Four Optical Methods in Estimating Leaf Area Index at Elementary Sampling Unit of Larix principis-rupprechtii Forests 期刊论文  OAI收割 FORESTS, 2020, 卷号: 11, 期号: 1, 页码: 28 作者:  Zou, Jie;  Zuo, Yong;  Zhong, Peihong;  Hou, Wei;  Leng, Peng   |  收藏  |  浏览/下载：31/0  |  提交时间：2020/05/19 leaf area index  clumping effects  inversion model  woody components correction method  Larix-dominated forest plots  optical method  elementary sampling unit   A phase estimation algorithm for optical linear sampling 期刊论文  OAI收割 guangzi xuebao/acta photonica sinica, 2016, 卷号: 45, 期号: 8 作者:  Li, Fei-Tao;  Zhao, Wei;  Liu, Yuan-Shan 收藏  |  浏览/下载：24/0  |  提交时间：2016/10/14 Digital signal processing  Modulation  Optical communication  Phase noise  Quadrature amplitude modulation  Signal processing  Signal sampling   Optical waveform monitoring based on a free-running mode-locked femtosecond fibre laser and four-wave mixing in a highly nonlinear fibre 期刊论文  OAI收割 opto-electronics review, 2016, 卷号: 24, 期号: 2, 页码: 62-74 作者:  Liu, Y.;  Zhang, J. -G.;  Tang, D. 收藏  |  浏览/下载：32/0  |  提交时间：2016/08/19 optical sampling  mode-locked fibre laser  four-wave mixing  highly nonlinear fibre  optical waveform monitoring  eye diagram measurement   High-resolution, low-injection-signal-power optical sampling 期刊论文  OAI收割 optical and quantum electronics, 2015, 卷号: 47, 期号: 8, 页码: 2881-2888 作者:  Li, Feitao;  Liu, Yuanshan;  Zhao, Wei 收藏  |  浏览/下载：72/0  |  提交时间：2015/10/19 Optical sampling  Time division multiplexing  Mode-lock laser   Carrier-Envelope Phase Measurement With Linear Optical Sampling 期刊论文  OAI收割 ieee photonics journal, 2015, 卷号: 7, 期号: 3 作者:  Li, Feitao 收藏  |  浏览/下载：42/0  |  提交时间：2015/07/22 Carrier-envelop phase measurement  optical sampling  Fourier optics and signal processing   Design of wideband, high-resolution optical waveform samplers based on a dispersion-flattened highly nonlinear photonic crystal fiber 期刊论文  OAI收割 journal of optics, 2012, 卷号: 14, 期号: 5, 页码: 055201 作者:  Liu, Yuanshan;  Zhang, Jian-Guo;  Zhao, Wei 收藏  |  浏览/下载：28/0  |  提交时间：2012/09/04 all-optical sampling  photonic crystal fiber  four-wave mixing  ultrafast optical waveform samplers  optical fiber communications   An auto-focus algorithm of fast search based on combining rough and fine adjustment (EI CONFERENCE) 会议论文  OAI收割 3rd international Conference on Manufacturing Science and Engineering, ICMSE 2012, March 27, 2012 - March 29, 2012, Xiamen, China 作者:  Zhang S.;  Zhang Y. 收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25 A coarse and fine combined fast search and auto-focusing algorithm was suggested in this paper. This method can automatically search and find the focal plane by evaluating the image definition. The Krisch operator based edge energy function was used as the big-step coarse focusing  and then the wavelet transform based image definition evaluation function  which is sensitivity to the variation in image definition  was used to realize the small-step fine focusing in a narrow range. The un-uniform sampling function of the focusing area selection used in this method greatly reduces the workload and the required time for the data processing. The experimental results indicate that this algorithm can satisfy the requirement of the optical measure equipment for the image focusing. (2012) Trans Tech Publications.   Study on time registration method for photoelectric theodolite data fusion (EI CONFERENCE) 会议论文  OAI收割 10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China Yang H.-T.; Gao H.-B. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 In range measurement  theodolite and radar constitute a real-time tracking system at different sites to track the same target in the air and get useful information exactly and timely. As the optical theodolite and radar have different sampling frequency and measurement system  the data is sent to the fusion center is asynchronous. This paper proposed a time registration method based on multi-sensor data using Wavelet neural network algorithm  which not only better solved the basic problems of theodolite fusion tracking but also improve the efficiency of data fusion. Simulation experiment and comparison with other time registration method have shown the advantage of this method. 2012 IEEE.   Physical layer design for free space optical communication (EI CONFERENCE) 会议论文  OAI收割 2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China 作者:  Wang H.;  Zhang Q.;  Guo J.;  Guo J.;  Wang H. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 A small size Free Space Optical Communication System is introduced  including the hardware and the hardware specified physical layer protocol. In detail  the rapid synchronization method to reduce the handshake bandwidth requirement is demonstrated. The hardware of the system includes the laser driver system  the signal amplifying and shaping system  the data interface system. The hardware specified physical layer protocol is used to interface the outer data  serialize and deserialize the data stream  check transmission errors and schedule the data transmission. The overall system is a FIFO-like system and the user can use it as if he's operating a FIFO. The system is designed mainly for terrestrial FSO link whose signal channel is the atmosphere. Due to the complex composition and activity of the atmosphere  this signal channel brings in great influence on the transmitting laser in it  for example  the absorption and scattering of the atmosphere molecules and aerosols  the scintillation of received laser power caused by the turbulence of the atmosphere  all of which results in a much higher Bit Error Rate (BER) of the communication system than wired communication systems leading to frequent resynchronization. In our system  the sampling clock is generated locally using multi-phase sampling technique rather than PLLbased clock recovery  which helps to rapid synchronization. 2012 IEEE.   Clock drift-tolerant optical bit pattern monitoring technique in asynchronous undersampling system 期刊论文  OAI收割 optical engineering, 2011, 卷号: 50, 期号: 10, 页码: 105008 作者:  Zhang, Huixing;  Zhao, Wei 收藏  |  浏览/下载：23/0  |  提交时间：2012/06/29 optical bit pattern monitoring  clock-drift tolerant  asynchronous optical sampling  optical communications