搜索结果: 1-15 共查到“光学工程 techniques”相关记录26条 . 查询时间(0.453 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Equivariant techniques in Chromatic homotopy theory
色度 同伦理论 等变技术
2023/5/15
Chromatic homotopy theory uses the algebraic geometry of smooth 1-parameter formal groups to separate stable homotopy theory into periodic layers. The 1st layer recovers the image of Adams’ J homomorp...
光电信息大讲堂第211期：Silicon-Based Mm-Wave Circuit Techniques for Communication and Radar
毫米波芯片 硅基工艺 通信芯片
2023/4/17
毫米波具有丰富的频率资源，已逐步应用于高速通信和高精度雷达等领域。但由于硅基工艺本身的限制，采用硅基工艺实现毫米波芯片面临巨大的技术挑战。本报告讨论了硅基毫米波芯片技术的发展以及所面临的技术挑战，介绍了本课题组在解决宽带收发链路、高精度毫米波信号源和相控阵等方面的工作，并简要介绍了本课题组开发的毫米波雷达与通信芯片。
DECOMPOSITION TECHNIQUES FOR ICESAT/GLAS FULL-WAVEFORM DATA
ICESat/GLAS Full-Waveform Waveform Decomposition Method Overlapped Echo Components Levenberg-Marquard (LM) Optimization Method
2018/5/15
The geoscience laser altimeter system (GLAS) on the board Ice, Cloud, and land Elevation Satellite (ICESat), is the first long-duration space borne full-waveform LiDAR for measuring the topography of ...
2017SPIE高级自由空间光通信技术与应用专题会议（Advanced Free-Space Optical Communication Techniques and Applications）
2017 SPIE 高级自由空间光通信技术与应用 专题会议
2017/4/25
Free-space optical communication provides high-capacity data links for defence and security. This conference will provide a forum for all professionals involved with both short and long range free-spa...
2017光学相干成像技术和散射介质成像专题会议（2017 Conferences on Optical Coherence Imaging Techniques and Imaging in Scattering Media）
2017 光学相干成像技术和散射介质成像 专题会议
2017/4/25
This conference is a continuation of “Optical Coherence Tomography and Coherence Techniques” and seeks to broaden the scope to cover the general area of imaging in biological scattering media based on...
COMPARISON OF TECHNIQUES FOR TERRESTRIAL LASER SCANNING DATA GEOREFERENCING APPLIED TO 3-D MODELLING OF CULTURAL HERITAGE
Cultural Heritage Documentation, Georeferencing, Visualization, Terrestrial Laser Scanning
2015/10/8
The paper is deals with the application of terrestrial laser scanning for the generation of a 3D model of the historical settlement of
San Pietro al Monte in Civate (Lombardia, Italy). In the first ...
3D MODELING OF COMPLEX ARCHITECTURE INTEGRATING DIFFERENT TECHNIQUES – A CRITICAL OVERVIEW
Terrestrial Laser Scanner Close Range Photogrammetry Architectonical Survey
2015/10/8
The laboratory of survey, photogrammetry, cartography and GIS of the Politecnico of Milano has reached in these years a good
experience in the field of architectural survey, representation and 3D mo...
Multi-spectral data acquisition and processing techniques for damage detection on building surfaces
Cultural Heritage Multispectral Terrestrial Laser Scanning Classification Acquisition Detection Recording
2015/8/25
This paper describes the development and investigation of a multi-spectral laser scanner for non destructive diagnosis of damages on building surfaces. The application of four semiconductor lasers as ...
COMBINED 3D SURVEYING TECHNIQUES FOR STRUCTURAL ANALYSIS APPLICATIONS
3D modeling cultural heritage procustes analysis structural analysi
2015/8/7
The plenty of works presented in last two years about the use of 3D models in the field of Cultural Heritage witness the great interest
of surveyors, engineers, architects and archaeologists towards...
COMPARISON OF CLUSTERING TECHNIQUES APPLIED TO LASER DATA
LIDAR First and Last Pulse data Clustering Quality assessment Unsupervised learning Feature Extraction
2015/7/29
During the last decade airborne laser scanning has become a mature technology which is now widely accepted for 3D data collection.
Automated processes employ the scanned laser data and the platform ...
Airborne Laser Scanning and Image Processing Techniques for Archaeological Prospection
Digital terrain model non-invasive archaeology DTM shaded relief LiDAR
2014/7/30
Aerial photography was, for decades, an invaluable tool for archaeological prospection, in spite of the limitation of this method to deforested areas. The airborne laser scanning (ALS) method can be n...
3D painting documentation: evaluation of conservation conditions with 3D imaging and ranging techniques
Cultural Heritage Photogrammetry Structured light sensor Monitoring, Comparison
2014/7/30
The monitoring of paintings, both on canvas and wooden support, is a crucial issue for the preservation and conservation of this kind of artworks. Many environmental factors (e.g. humidity, temperatur...
Comparison of OFDMA and SC-FDMA Channel Access Techniques in a Passive Optical Network Environment
Comparison OFDMA SC-FDMA Channel Access Techniques Passive Optical Network Environment
2015/5/25
For the first time, OFDMA and SC-FDMA are compared experimentally as candidate uplink access techniques for next-generation PONs. Important issues like peak-to-average power ratio, optical beat interf...
Ultra-wideband radio-over-fiber techniques and networks
Fiber optics ptical communications Radio frequency photonics
2015/6/8
This paper summarizes the motivations and results obtained regarding the optical distribution of a 60GHz radio signal throughout buildings to provide users with Ultra-Broad-Band Wireless Home Area Net...
Experimental Analyses and Optimization of Equalization Techniques for 60-GHz OFDM Radio-over-Fiber System
Fiber optical communications Fiber optics links subsystems
2015/6/4
We experimentally investigated transmission performance of 16QAM-OFDM signal over 25-km fiber and 5-m air distance using 60GHz ROF technology. It is the first time that the details of optimal equaliza...