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High resolution satellite imaging sensors for precision agriculture
Chenghai YANG
《农业科学与工程前沿(英文)》 2018年 第5卷 第4期 页码 393-405 doi: 10.15302/J-FASE-2018226
The central concept of precision agriculture is to manage within-field soil and crop growth variability for more efficient use of farming inputs. Remote sensing has been an integral part of precision agriculture since the farming technology started developing in the mid to late 1980s. Various types of remote sensors carried on ground-based platforms, manned aircraft, satellites, and more recently, unmanned aircraft have been used for precision agriculture applications. Original satellite sensors, such as Landsat and SPOT, have commonly been used for agricultural applications over large geographic areas since the 1970s, but they have limited use for precision agriculture because of their relatively coarse spatial resolution and long revisit time. Recent developments in high resolution satellite sensors have significantly narrowed the gap in spatial resolution between satellite imagery and airborne imagery. Since the first high resolution satellite sensor IKONOS was launched in 1999, numerous commercial high resolution satellite sensors have become available. These imaging sensors not only provide images with high spatial resolution, but can also repeatedly view the same target area. The high revisit frequency and fast data turnaround time, combined with their relatively large aerial coverage, make high resolution satellite sensors attractive for many applications, including precision agriculture. This article will provide an overview of commercially available high resolution satellite sensors that have been used or have potential for precision agriculture. The applications of these sensors for precision agriculture are reviewed and application examples based on the studies conducted by the author and his collaborators are provided to illustrate how high resolution satellite imagery has been used for crop identification, crop yield variability mapping and pest management. Some challenges and future directions on the use of high resolution satellite sensors and other types of remote sensors for precision agriculture are discussed.
关键词: high resolution satellite sensor multispectral imagery precision agriculture spatial resolution temporal resolution
刘晶晶,谢庆国
《中国工程科学》 2011年 第13卷 第10期 页码 105-112
研制成本可负担的高空间分辨率正电子发射断层成像(positron emission tomography,PET)系统在PET成像应用中具有决定性的意义,也是PET成像面临的关键性挑战之一。设想一种PET系统,能够根据应用的需求对不同性能的探测器进行布局,在一个具体时刻,对部分成像区域获得很高的性能,而在其他的区域获得普通性能。提出了一种应用适应性PET系统原型,由大部分普通固有空间分辨率的探测模块和少量更高甚至极端高固有空间分辨率的探测模块组成。研究了在含有连续放置的一段高固有空间分辨率探测模块的PET系统中,高性能模块的布局位置和数量对视场内不同位置点的空间分辨率的影响。初步研究结果表明,所提出的系统能够为局部区域带来高空间分辨率,其空间分辨率提升程度与高性能模块布局位置有关,在同一高性能模块布局位置下,视场中不同位置点的提升程度不同。该研究结果也显示,根据应用需求规划探测模块的构成和布局以在感兴趣区域获得局部高空间分辨率是可能的。
A building-based data capture and data mining technique for air quality assessment
Ni SHENG, U Wa TANG
《环境科学与工程前沿(英文)》 2011年 第5卷 第4期 页码 543-551 doi: 10.1007/s11783-011-0369-4
关键词: traffic air pollution spatial distribution high resolution geographic information system
Multi-resolution texture synthesis from turntable image sequences
Xuedong WANG, Xiaojun WU, Xiaorong ZHANG
《机械工程前沿(英文)》 2012年 第7卷 第1期 页码 72-80 doi: 10.1007/s11465-012-0305-8
Texture synthesis and texture mapping are important technologies for rendering realistic three-dimensional scene. It has been widely used in virtual reality, urban modeling, 3D animation, gaming and other areas. In this paper, we propose a fast method to construct high quality texture map for multi-resolution texture synthesis from turntable image sequences. Given a 3D mesh model, we first get the projection relationship between 3D mesh and image sequences. We then use image sequences to construct a texture triangle for each 3D triangle mesh and get a global rectangular texture map for the whole mesh. Another approach to construct a texture map is using Stretch-minimizing mesh parameterization. Finally, we map the texture to mesh model to verify the quality of these two methods. The high performance of this method has been demonstrated in many real object models.
关键词: texture synthesis multi-resolution texture map texture mapping
《环境科学与工程前沿(英文)》 2022年 第16卷 第4期 doi: 10.1007/s11783-021-1478-3
The Large scale Urban Consumption of energ Y model was updated and coupled with WRF.
关键词: Anthropogenic heat emissions LUCY High-resolution Meteorological parameters Air quality
从中国首台紫外-可见光高光谱卫星仪器反演得到的高空间分辨率臭氧廓线 Article
Fei Zhao, Cheng Liu, Qihou Hu, Congzi Xia, Chengxin Zhang, Wenjing Su
《工程(英文)》 2024年 第32卷 第1期 页码 107-116 doi: 10.1016/j.eng.2023.02.020
Understanding the vertical distribution of ozone is crucial when assessing both its horizontal and vertical transport, as well as when analyzing the physical and chemical properties of the atmosphere. One of the most effective ways to obtain high spatial resolution ozone profiles is through satellite observations. The Environmental Trace Gases Monitoring Instrument (EMI) deployed on the Gaofen-5 satellite is the first Chinese ultraviolet-visible hyperspectral spectrometer. However, retrieving ozone profiles using backscattered radiance values measured by the EMI is challenging due to unavailable measurement errors and a low signal-to-noise ratio. The algorithm developed for the Tropospheric Monitoring Instrument did not allow us to retrieve 87% of the EMI pixels. Therefore, we developed an algorithm specific to the characteristics of the EMI. The fitting residuals are smaller than 0.3% in most regions. The retrieved ozone profiles were in good agreement with ozonesonde data, with maximum mean biases of 20% at five latitude bands. By applying EMI averaging kernels to the ozonesonde profiles, the integrated stratospheric column ozone and tropospheric column ozone also showed excellent agreement with ozonesonde data. The lower layers (0–7.5 km) of the EMI ozone profiles reflected the seasonal variation in surface ozone derived from the China National Environmental Monitoring Center (CNEMC). However, the upper layers (9.7–16.7 km) of the ozone profiles show different trends, with the ozone peak occurring at an altitude of 9.7–16.7 km in March. A stratospheric intrusion event in central China from August 11 to 15, 2019, is captured using the EMI ozone profiles, potential vorticity data, and relative humidity data. The increase in the CNEMC ozone concentration showed that downward transport enhanced surface ozone pollution.
关键词: Ozone profiles EMI Soft calibration Floor noise correction Stratospheric ozone intrusion
A thermally flexible and multi-site tactile sensor for remote 3D dynamic sensing imaging
Guoting Xia, Yinuo Huang, Fujiang Li, Licheng Wang, Jinbo Pang, Liwei Li, Kai Wang
《化学科学与工程前沿(英文)》 2020年 第14卷 第6期 页码 1039-1051 doi: 10.1007/s11705-019-1901-5
关键词: tactile/thermal sensor piezoelectric/pyroelectric effects high resolution spatial mapping motion monitoring
Efficient, high-resolution topology optimization method based on convolutional neural networks
Liang XUE, Jie LIU, Guilin WEN, Hongxin WANG
《机械工程前沿(英文)》 2021年 第16卷 第1期 页码 80-96 doi: 10.1007/s11465-020-0614-2
关键词: topology optimization convolutional neural network high resolution density-based
Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI
《结构与土木工程前沿(英文)》 2019年 第13卷 第2期 页码 429-455 doi: 10.1007/s11709-018-0483-5
关键词: central high resolution schemes RBFs higher order accuracy generalized thermoelasticity multiresolution-based adaptation
匿名地址解析模型 Article
Guang-jia SONG,Zhen-zhou JI
《信息与电子工程前沿(英文)》 2016年 第17卷 第10期 页码 1044-1055 doi: 10.1631/FITEE.1500382
关键词: 网络安全;地址解析;邻居发现;匿名
吴世法
《中国工程科学》 2000年 第2卷 第2期 页码 10-14
超分辨近场光学成像技术是当前国内外一个重要的高新技术前沿课题,也将是我国21世纪初应该发展的一项高新技术产业。文中介绍了我国自1991年以来开拓研究的进展,探讨了国际学术界及产业开发中当前存在的主要问题,提出了各类超分辨扫描模式成像公式的乘法表达式,并作了分析比较。为解决消除假像和从有形貌等混合图像中分离纯光学图像两大难题,作者曾于1993年和1996年提出两项发明专利,为发展我国的该产业解决了两大技术关键。
Soil spatial variability impact on the behavior of a reinforced earth wall
Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI
《结构与土木工程前沿(英文)》 2020年 第14卷 第2期 页码 518-531 doi: 10.1007/s11709-020-0611-x
关键词: reinforced earth wall geosynthetic random field spatial variability Monte Carlo simulation
Industrial eco-efficiency and its spatial-temporal differentiation in China
Wei YANG, Fengjun JIN, Chengjin WANG, Chen LV
《环境科学与工程前沿(英文)》 2012年 第6卷 第4期 页码 559-568 doi: 10.1007/s11783-012-0400-4
关键词: industrial eco-efficiency data envelopment analysis (DEA) model exploratory spatial data analysis (ESDA)
Border-search and jump reduction method for size optimization of spatial truss structures
Babak DIZANGIAN, Mohammad Reza GHASEMI
《结构与土木工程前沿(英文)》 2019年 第13卷 第1期 页码 123-134 doi: 10.1007/s11709-018-0478-2
关键词: optimum design sensitivity analysis reduction method spatial trusses OpenSees
《环境科学与工程前沿(英文)》 2023年 第17卷 第10期 doi: 10.1007/s11783-023-1724-y
关键词: Microplastic Environmental transport Soil pollution Stormwater Detention ponds
标题 作者 时间 类型 操作
A building-based data capture and data mining technique for air quality assessment
Ni SHENG, U Wa TANG
期刊论文
Multi-resolution texture synthesis from turntable image sequences
Xuedong WANG, Xiaojun WU, Xiaorong ZHANG
期刊论文
of anthropogenic heat emissions on meteorological parameters and air quality in Beijing using a high-resolution
期刊论文
从中国首台紫外-可见光高光谱卫星仪器反演得到的高空间分辨率臭氧廓线
Fei Zhao, Cheng Liu, Qihou Hu, Congzi Xia, Chengxin Zhang, Wenjing Su
期刊论文
A thermally flexible and multi-site tactile sensor for remote 3D dynamic sensing imaging
Guoting Xia, Yinuo Huang, Fujiang Li, Licheng Wang, Jinbo Pang, Liwei Li, Kai Wang
期刊论文
Efficient, high-resolution topology optimization method based on convolutional neural networks
Liang XUE, Jie LIU, Guilin WEN, Hongxin WANG
期刊论文
Multiscale RBF-based central high resolution schemes for simulation of generalized thermoelasticity problems
Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI
期刊论文
Soil spatial variability impact on the behavior of a reinforced earth wall
Adam HAMROUNI, Daniel DIAS, Badreddine SBARTAI
期刊论文
Industrial eco-efficiency and its spatial-temporal differentiation in China
Wei YANG, Fengjun JIN, Chengjin WANG, Chen LV
期刊论文
Border-search and jump reduction method for size optimization of spatial truss structures
Babak DIZANGIAN, Mohammad Reza GHASEMI
期刊论文