机构

• 长春光学精密机械与物... [9]
• 地质与地球物理研究所 [4]
• 云南天文台 [1]
• 西安光学精密机械研究... [1]
• 国家授时中心 [1]

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• OAI收割 [16]

内容类型

• 会议论文 [9]
• 期刊论文 [7]

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• 2025 [1]
• 2023 [1]
• 2022 [1]
• 2020 [1]
• 2018 [1]
• 2014 [3]
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学科主题

• 机械工程 [1]
• 机械工程::仪器仪表... [1]
• 机械工程::仪器仪表... [1]
• 物理学 [1]
• 物理学::光学 [1]

筛选

浏览/检索结果: 共16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 Research progress on infrared temperature measurement for low emissivity objects 期刊论文  OAI收割 红外与毫米波学报/JOURNAL OF INFRARED AND MILLIMETER WAVES, 2025, 卷号: 44, 期号: 2, 页码: 234-250 作者:  Huang SJ(黄善杰);  Zhao, Jin-Song;  Wang, Ling-Xue;  Song TF(宋腾飞);  Xu FY(许方宇)   |  收藏  |  浏览/下载：36/0  |  提交时间：2025/03/10 infrared temperature measurement  low emissivity objects  signal-to-noise ratio  emissivity   Seismic Image Dip Estimation by Multiscale Principal Component Analysis 期刊论文  OAI收割 IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2023, 卷号: 61, 页码: 10 作者:  Wu, Shaojiang;  Wang, Yibo   |  收藏  |  浏览/下载：25/0  |  提交时间：2023/03/29 Estimation  Principal component analysis  Signal to noise ratio  Image resolution  Tensors  Low-pass filters  Mathematical models  Approximation algorithms  estimation  inverse problems  mathematical model  reliability   Research on data processing method for detection of small and weak targets in space 会议论文  OAI收割 ELECTR NETWORK, 2022-11-24 作者:  Sen, Tian;  Yan, Wen   |  收藏  |  浏览/下载：15/0  |  提交时间：2023/06/19 the Milky Way's background  low signal to noise ratio  target detection  multiframe superposition   Feed-forward timing estimation for burst signals in non-cooperative communication 期刊论文  OAI收割 IET COMMUNICATIONS, 2020, 卷号: 14, 期号: 17, 页码: 2871-2877 作者:  Li, Youyang;  Qin, Fei;  Wang, Xue;  Lu, Xiaochun;  Chu, Ziyue   |  收藏  |  浏览/下载：43/0  |  提交时间：2021/11/29 optimisation  modulation  demodulation  signal classification  estimation theory  feedforward  noncooperative communication  modulation classification  demodulation  classical cooperative communication  optimisation function  closed-form analytical solution  estimation performance  low signal-to-noise ratio  feedforward timing estimation method  SNR  modified Cramer-Rao bound  burst signal classification   Development of cold optical infrared imaging terminal with multiband 期刊论文  OAI收割 Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering, 2018, 卷号: 47, 期号: 9 作者:  Huang, Zhiguo;  Wang, Jianli;  Yin, Limei;  Li, Hongzhuang;  Liu, Junchi   |  收藏  |  浏览/下载：19/0  |  提交时间：2019/09/17 Thermography (imaging)  Infrared detectors  Low temperature effects  Signal to noise ratio  Space research  Temperature   Automatic event detection and event recovery in low SNR microseismic signals based on time-frequency sparseness 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2014, 卷号: 57, 期号: 8, 页码: 2656-2665 作者:  Wang Peng;  Chang Xu;  Wang Yi-Bo;  Wang Lu-Chen;  Zhai Hong-Yu   |  收藏  |  浏览/下载：19/0  |  提交时间：2018/09/26 Microseismic event  Low signal-to-noise ratio  Time-frequency sparseness  Event detection  Event recovery   Automatic event detection and event recovery in low SNR microseismic signals based on time-frequency sparseness 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2014, 卷号: 57, 期号: 8, 页码: 2656-2665 作者:  Wang Peng;  Chang Xu;  Wang Yi-Bo;  Wang Lu-Chen;  Zhai Hong-Yu   |  收藏  |  浏览/下载：17/0  |  提交时间：2018/09/26 Microseismic event  Low signal-to-noise ratio  Time-frequency sparseness  Event detection  Event recovery   Automatic event detection and event recovery in low SNR microseismic signals based on time-frequency sparseness 期刊论文  OAI收割 CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2014, 卷号: 57, 期号: 8, 页码: 2656-2665 作者:  Wang Peng;  Chang Xu;  Wang Yi-Bo;  Wang Lu-Chen;  Zhai Hong-Yu   |  收藏  |  浏览/下载：20/0  |  提交时间：2018/09/26 Microseismic event  Low signal-to-noise ratio  Time-frequency sparseness  Event detection  Event recovery   The application of adaptive enhancement algorithm based on gray entropy in mammary gland CR image (EI CONFERENCE) 会议论文  OAI收割 2012 2nd International Conference on Consumer Electronics, Communications and Networks, CECNet 2012, April 21, 2012 - April 23, 2012, Three Gorges, China Zhang M.-H.; Zhang Y.-Y. 收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25 Mammary gland is composed entirely of soft tissue with approximate density  therefore mammary gland CR medicine radiation image presents a low contrast  and slight difference changes may be a manifestation of tumor  so it is necessary to enhance mammary gland CR image to improve its visual quality in order to meet the demands of doctor's clinical diagnosis. However the general enhancement algorithms over enhance the contrast and noise  due to image details lost  aiming at the defects  a mammary gland CR medicine image adaptive enhancement arithmetic based on image gray entropy is put forward. The arithmetic adapts dizzy image to magnify selected spatial frequency response in order to enhance the edge details of mammary gland CR images. It can adjust weighted factor K according to image gray characteristics namely pixel gray entropy. Experiments results demonstrate that mammary gland CR image enhanced by the algorithm has abundant details and high signal-to-noise ratio  moreover  CR image enhanced has good visual effect. So the method is effective and fit for enhancing CR medical radiation image edge details. 2012 IEEE.   Improved TOPS about direction of arrival estimation for wideband signals (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Vibration, Structural Engineering and Measurement, ICVSEM2011, October 21, 2011 - October 23, 2011, Shanghai, China 作者:  He B. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 The study about the direction-of-arrival (DOA) estimation for wideband signals is a basic topic of Signal Processing. The method called test of orthogonality of projected subspaces (TOPS) does not require initial values to form focusing matrix compared with the coherent signal subspace method (CSSM)  but it has poor performance for coherent wideband signals at low signal-to-noise ratio (SNR). Based on the lack of the conventional TOPS  this paper reconstructs a set of new matrices with the narrowband correlated matrices coming from the DFT decomposition of the array output and modifies the method frame of the conventional TOPS. So we get a set of reconstructed matrices with full rank corresponding to each frequency bin  and which have no array aperture loss. The improved TOPS can estimate the DOA for coherent wideband sources at low SNR  and enhances the performance of the conventional TOPS. Simulation results show that the improved TOPS is effective  and the total performance of which is similar to the rotational signal-subspace (RSS) method. (2012) Trans Tech Publications.