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An improvement method of a lossless compression scheme for the datacube from Geostationary Interferometric infrared Sounder (GIIRS) and its FPGA implementation

An improvement method of a lossless compression scheme for t...

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IEEE Joint International Information technology and Artificial Intelligence Conference (ITAIC)

作者： Minzhu Yang Raúl Guerra Hernández Changpei Han José Francisco López Feliciano Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province College of Information Engineering China Jiliang University Hangzhou China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of Science Shanghai China Instituto Universitario de Microelectrónica Aplicada Universidad de Las Palmas de Gran Ganaria Las Palmas Spain

ISBN: (数字)9781728152448

ISBN: (纸本)9781728152455

This paper briefly described an improved method for the original proposed scheme based on Vector Quantization and Linear Prediction to further enhance the compression ratio while reduce the time cost. Given the fact that the interferograms belong to the same datacube are similar to each other, there are two obvious modifications in this paper: predict only once to get the general predicted coefficients for the same datacube; along with treat datacube rather than sequence as the encoded unit. The time consumption spent by Linear Prediction part will shrink about 35.55% by predicting just once. Moreover, the change of the encoded object makes the final compression ratio get a further rise range from 2.62% to 3.711%.

关键词： Vector quantization Conferences Information technology Artificial intelligence Field programmable gate arrays

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Development and Prospect of Spaceborne infrared Fourier Spectrometer 1

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5th China High-resolution Earth Observation Conference, CHREOC 2018

作者： Chen, Ren Gao, Cong Hua, Jianwen Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai200083 China Key Laboratory of Infrared Detection and Imaging Technology Chinese Academy of Sciences Shanghai200083 China University of Chinese Academy of Sciences Beijing10049 China

ISBN: (数字)9789811365539

ISBN: (纸本)9789811365522

The satellite-borne infrared Fourier spectrometer is one of the main infrared remote sensing instruments mounted on meteorological satellites. It can detect the vertical distribution of parameters such as large temperature and humidity. In this paper, the development of spaceborne infrared Fourier spectrometer is reviewed, and the performance characteristics of the spaceborne infrared Fourier spectrometer at a different stage at home and abroad are compared. Combined with the development of current instruments and the characteristics of the information age, the process of spaceborne infrared Fourier spectrometer technology development is prospected, and the development direction of "one wide and three high" and hyperspectral integrated data network is pointed out, which can provide reference for maturity and practicability of the infrared Fourier spectrometer technology in China. © 2019, Springer Nature Singapore Pte Ltd.

关键词： Fourier transform infrared spectroscopy

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A 3D space-ground atmospheric observation system

A 3D space-ground atmospheric observation system

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Fourier Transform Spectroscopy, FTS 2019

作者： Ren, Chen Cong, Gao Lei, Liu Jianwen, Hua Lei, Ding Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai200083 China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of Sciences Shanghai200083 China University of Chinese Academy of Sciences Beijing100049 China College of Meteorology and Oceanography National University of Defense Technology Nanjing211101 China

This paper introduced a three-dimensional(3D) Space-ground atmospheric observation system, which is based on interference optics technology. It is used to detect the three-dimensional distribution and change of atmosp... 详细信息

ISBN: (纸本)9781943580613

关键词： Atmospheric humidity

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Design, performance and in-orbit evaluation results of Tiangong-2 wide-band imaging spectrometer

Design, performance and in-orbit evaluation results of Tiang...

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Tiangong-2 Remote Sensing Application Conference on technology, Method and Application

作者： Wei, Jun Ding, Lei He, Xianqiang Tang, Yuyu Feng, Xin Lin, Mingsen Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai200083 China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography SOA Hangzhou310012 China National Satellite Ocean Application Service SOA Beijing100081 China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of Sciences Shanghai200083 China

ISBN: (纸本)9789811335006

The system design, performance and in-orbit evaluations of a push-broom wide-band imaging spectrometer (WIS) on Tiangong-2 space laboratory is introduced. The WIS has 100 m spatial resolution in ocean color bands (FOV is around 42°), which is the highest compared to other in-orbit ocean color sensors (GOCI, MODIS, VIIRS, and OLCI). Besides, WIS includes visible and near infrared (VNIR), shortwave infrared (SWIR) and thermal infrared (TIR) channels and has excellent performance in ocean color monitoring, and SNR in 0.4–0.8 μm is more than 400 at typical oceanic radiance. Average SNR at SWIR is more than 550 at typical atmosphere radiance. Moreover, the instrument’s average NE⊿T at TIR is lower than 20 mK, which is one of the best. The in-orbit tests reveal that the ocean color components retrieved by WIS are highly consistent with the results from the typical ocean color satellite sensors (MODIS, VIIRS and GOCI), but have finer structures due to higher spatial resolution. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Dewars

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Consistent Transfer Radiometric Calibration technology for Optical Remotely Sensor and Field Campaign Validation

Consistent Transfer Radiometric Calibration Technology for O...

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Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, WHISPERS

作者： Ning Wang Yonggang Qian Lingling Ma Yinnian Liu Yaokai Liu Yongguang Zhao Chuanrong Li Lingli Tang Key Laboratory of Quantitative Remote Sensing Information Technology Academy of Opto-Electronics Beijing China Key Laboratory of Infrared System Detection and Imaging Technologies Shanghai Institute of Technical Physics Shanghai China

ISBN: (纸本)9781728152950

To accurately calibrate the remotely sensed data becomes one of the primary problems for different application of remote sensing. In this paper, consistent transfer radiometric calibration technology is proposed, and the related system composed of standard ground-based and airborne hyperspectral imagers with self-calibrator units, comprehensive references including different types of artificial targets and natural scenes, and benchmark transfer method have been developed. The uncertainty of this system has also been analyzed and an uncertainty of less than 4.5% could be reached by this system. To validate this system, a flight campaign taking place in National High-Resolution Comprehensive Calibration Site of China has been carried out, the results show that the ground-based and air-flight benchmarks were agree with the satellite measurement.

关键词： Calibration Benchmark testing Uncertainty Radiometry Hyperspectral imaging Atmospheric modeling Atmospheric measurements

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短波红外荧光成像活体监测和评估植入的M2巨噬细胞在骨骼肌再生中的作用（英文）

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Engineering 2024年第2期 283-294页

作者： Mo Chen Yuzhou Chen Sijia Feng Shixian Dong Luyi Sun Huizhu Li Fuchun Chen Nguyen Thi Kim Thanh Yunxia Li Shiyi Chen You Wang Jun Chen Sports Medicine Institute of Fudan University Department of Sports Medicine Huashan Hospital Fudan University Department of Bone and Joint Surgery Department of Orthopedics Renji Hospital School of Medicine Shanghai Jiao Tong University Department of Anatomy and Physiology School of Medicine Shanghai Jiao Tong University Key Laboratory of Infrared System Detection & Imaging Technology Shanghai Institute of Technical Physics Chinese Academy of Sciences Biophysics Group Department of Physics and Astronomy University College London Healthcare Biomagnetics and Nanomaterials Laboratories University College London

Skeletal muscle has a robust regeneration ability that is impaired by severe injury,disease,and *** in a decline in skeletal muscle ***,improving skeletal muscle regeneration is a key challenge in treating skeletal muscle-related *** to their significant role in tissue regeneration,implantation of M2 macrophages(M2M?) has great potential for improving skeletal muscle ***,we present a short-wave infrared(SWIR) fluorescence imaging technique to obtain more in vivo information for an in-depth evaluation of the skeletal muscle regeneration effect after M2M? *** fluorescence imaging was employed to track implanted M2M? in the injured skeletal muscle of mouse *** is found that the implanted M2M? accumulated at the injury site for two ***,SWIR fluorescence imaging of blood vessels showed that M2M? implantation could improve the relative perfusion ratio on day 5(1.09±0.09 vs 0.85±0.05;p=0.01) and day 9(1.38±0.16 vs 0.95±0.03;p=0.01) post-injury,as well as augment the degree of skeletal muscle regencration on day 13 ***,multiple linear regression analyses determined that post-injury time and relative perfusion ratio could be used as predictive indicators to evaluate skeletal muscle *** results provide more in vivo details about M2M? in skeletal muscle regeneration and confirm that M2M? could promote angiogenesis and improve the degree of skeletal muscle repair,which will guide the research and development of M2M? implantation to improve skeletal muscle regeneration.

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AHSI: the Hyperspectral Imager on China's GaoFen-5 Satellite

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IOP Conference Series: Earth and Environmental Science 2020年第1期509卷

作者： Yin-Nian Liu De-Xin Sun Xiao-Ning Hu Shu-Feng Liu Kai-Qin Cao Key Laboratory of Infrared System Detection and Imaging Technologies Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China

The Advanced Hyperspectral Imager (AHSI) is a visible/short-wave infrared hyperspectral imager on China's GaoFen-5 satellite, which was launched on May 9th, 2018. The AHSI is the first spaceborne hyperspectral sensor that utilizes both the convex grating spectrophotometry and an improved three concentric-mirror (Offner) configuration. It has 60 km swath width, 30 m spatial resolution, 5-10 nm spectral resolution, and 330 spectral bands. Instrument performance was evaluated and validated through well-designed experiments on orbit. Results show that the performance of AHSI has met or exceeded predictions. The AHSI has outstanding capability of detecting and identifying different ground objects and in ecological environment monitoring and natural resource exploration.

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Design of a wide-field target detection and tracking system using the segmented planar imaging detector for electro-optical reconnaissance

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Chinese Optics Letters 2018年第7期16卷 34-39页

作者：于清华武冬梅陈福春孙胜利 Shanghai Institute of Technical Physics of the Chinese Academy of Sciences Shanghai 200083 China Key Laboratory of Infrared System Detection and Imaging Technology Shanghai 200083 China University of Chinese Academy of Sciences Beijing 100049 China

Detecting and tracking multiple targets simultaneously for space-based surveillance requires multiple cameras,which leads to a large system volume and weight. To address this problem, we propose a wide-field detection and tracking system using the segmented planar imaging detector for electro-optical reconnaissance. This study realizes two operating modes by changing the working paired lenslets and corresponding waveguide arrays： a detection mode and a tracking mode. A model system was simulated and evaluated using the peak signal-to-noise ratio method. The simulation results indicate that the detection and tracking system can realize wide-field detection and narrow-field, multi-target, high-resolution tracking without moving parts.

关键词： FOV Design of a wide-field target detection and tracking system using the segmented planar imaging detector for electro-optical reconnaissance

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Review of Geostationary Interferometric infrared Sounder

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Chinese Optics Letters 2018年第11期16卷 47-57页

作者： Jianwen Hua Zhanhu Wang Juan Duan Libing Li Chenjun Zhang Xiaowei Wu Qing Fan Ren Chen Xiaojie Sun Lianwei Zhao Qian Guo Lei Ding Liwei Sun Changpei Han Xiangyang Li Nili Wang Haimei Gong Xiaoning Hu Qingjun Liao Dingquan Liu Tianyan Yu Yinong Wu Enguang Liu Zhijiang Zeng Center of Interferometer R＆D Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200082China Key Laboratory of Infrared System Detection and Imaging Technology Chinese Academy of SciencesShanghai 200082China Third Engineering Department Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200082China infrared Imaging Material and Device Laboratory Chinese Academy of SciencesShanghai 200082China Key Laboratory of Infrared Imaging Materials and Detectors Chinese Academy of SciencesShanghai 200082China Department of Optical Coatings and Materials Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200082China Space Cryocooler System Laboratory Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200082China State Key Laboratory of Transducer Technology Chinese Academy of SciencesShanghai 200082China Corresponding author：wuxiaowei@***

To measure the global atmospheric three-dimensional distribution and change of temperature and humidity is one of the key areas in atmospheric remote sensing detection; it is also a new research and development direction in the field of meteorological satellite application. As a main element of China second generation of geostationary meteorological satellite Fengyun 4 （FY-4）, which was launched on Dec. 11, 2016, the Geostationary Interferometric infrared Sounder （GIIRS） is the first interferometric infrared sounder working on the international geostationary orbit. It is used for vertical atmospheric sounding and gains atmospheric temperature, humidity, and disturbances. The combination of Fourier transform spectrometer technology and infrared detectors makes GIIRS have high spectral resolution and large coverage over spatial areas. With this kind of instrument, meteoro- logical satellites can improve the capabilities for severe weather event monitoring and numerical weather prediction. Here a concise review of the GIIRS development project, including its history, missions and functions, technical design, key technologies, system integration, calibration and in-orbit operation status, etc., is presented.

关键词： Calibration infrared detectors Remote sensing Temperature

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Encoding method of CGH for highly accurate optical measurement based on non-maxima suppression

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Chinese Optics Letters 2017年第11期15卷 41-45页

作者：肖锡晟于清华朱振涛胡凯陈桂林 Shanghai Institute of Technical Physics of the Chinese Academy of Sciences Shanghai 200083 China Key Laboratory of Infrared System Detection and Imaging technology Chinese Academy of Sciences Shanghai 200083 China University of Chinese Academy of Sciences Beijing 100049 China

The use of a computer-generated hologram（CGH） in interferometric testing provides new methods for highly accurate optical *** fabricate a CGH,polygons are used to approximate the smooth CGH *** the data size supported by CGH writing machines is limited,the number of polygon vertices must be ***,the CGH-encoding method determines the encoding *** realize a highly accurate optical measurement using CGHs,we propose a CGH-pattern-encoding method based on non-maxima suppression.A self-aligned CGH is designed to verify the *** experimental result shows that a highly accurate CGH can be fabricated using this method.

关键词： maxima suppression encoding aligned polygon fabricate deviation fabrication verify approximate

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