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科研机构
北京大学 [32]
内容类型
期刊论文 [22]
其他 [9]
会议论文 [1]
发表日期
2017 [1]
2016 [5]
2015 [5]
2014 [3]
2013 [1]
2012 [3]
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专题:北京大学
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GNSS-R土壤水分遥感的适宜性分析
期刊论文
遥感学报, 2017
彭学峰
;
万玮
;
李飞
;
陈秀万
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
GNSS-R
GNSS-R
soil moisture
specular reflection point
resolution
sensing depth
土壤水分
镜面反射点
分辨率
探测深度
Spatiotemporal patterns of remotely sensed PM2.5 concentration in China from 1999 to 2011
期刊论文
REMOTE SENSING OF ENVIRONMENT, 2016
Peng, Jian
;
Chen, Sha
;
Lu, Huiling
;
Liu, Yanxu
;
Wu, Jiansheng
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
PM2.5 concentration
Spatiotemporal patterns
Standard deviation ellipse analysis
Zoning control
Health risk exposure
FINE PARTICULATE MATTER
AEROSOL OPTICAL DEPTH
GROUND-LEVEL PM2.5
LONG-TERM EXPOSURE
CHEMICAL-COMPOSITIONS
SEASONAL-VARIATIONS
AIR-POLLUTION
EXTINCTION COEFFICIENTS
URBAN GUANGZHOU
PARTICLES PM2.5
Using Impervious Surfaces to Detect Urban Expansion in Beijing of China in 2000s
期刊论文
CHINESE GEOGRAPHICAL SCIENCE, 2016
Peng Jian
;
Liu Yanxu
;
Shen Hong
;
Xie Pan
;
Hu Xiaoxu
;
Wang Yanglin
收藏
  |  
浏览/下载:7/0
  |  
提交时间:2017/12/03
impervious surface area (ISA)
vegetation-imperious surface-soil (V-I-S) model
profile line analysis
urban expansion direction
Beijing
China
SPECTRAL MIXTURE ANALYSIS
WATER-QUALITY
URBANIZATION
MODEL
RESOLUTION
IMPACTS
PATTERN
AREA
Relative Trajectory Estimation During Chang'e-2 Probe's Flyby of Asteroid Toutatis Using Dynamics, Optical, and Radio Constraints
期刊论文
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2016
Bu, Yanlong
;
Tang, Wenlin
;
Fa, Wenzhe
;
Ding, Chibiao
;
Tang, Geshi
;
Yang, Yang
;
Cao, Jianfeng
;
Chen, Hai
;
Yin, Hejun
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Chang&apos
constraints
optical imaging
relative trajectory
the closest approaching distance
ANGLES-ONLY NAVIGATION
SMALL BODY
4179-TOUTATIS
EXPLORATION
GUIDANCE
STATE
SHAPE
e-2 probe
A unified free-form representation applied to the shape optimization of the hohlraum with octahedral 6 laser entrance holes
期刊论文
PHYSICS OF PLASMAS, 2016
Jiang, Shaoen
;
Huang, Yunbao
;
Jing, Longfei
;
Li, Haiyan
;
Huang, Tianxuan
;
Ding, Yongkun
收藏
  |  
浏览/下载:10/0
  |  
提交时间:2017/12/03
INERTIAL CONFINEMENT FUSION
NATIONAL-IGNITION-FACILITY
TETRAHEDRAL HOHLRAUMS
PHYSICS BASIS
IMPLOSIONS
SYMMETRY
OMEGA
GAIN
The frequency dependence of harmonic hysteresis effect in magnetoelectric laminated composites
期刊论文
COMPOSITE STRUCTURES, 2016
Xu, Hao
;
Pei, Yongmao
;
Fang, Daining
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Magnetoelectric effect
Frequency dependence
Harmonic hysteresis
Mechanical resonance
STRESS
MODEL
Measuring Spatial Structure of China's Megaregions
期刊论文
JOURNAL OF URBAN PLANNING AND DEVELOPMENT, 2015
Yang, Jiawen
;
Song, Ge
;
Lin, Jian
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
Urban development
China
Spatial analysis
Regional planning
Polycentric development
Statistical measures
Spatial pattern
China
ELLIPSE-SPECIFIC FITTING BY RELAXING THE 3L CONSTRAINTS WITH SEMIDEFINITE PROGRAMMING
其他
2015-01-01
Rong, Jiangpeng
;
Yang, Sen
;
Mei, Xiang
;
Ying, Xianghua
;
Huang, Shiyao
;
Zha, Hongbin
收藏
  |  
浏览/下载:3/0
  |  
提交时间:2017/12/03
conic fitting
ellipse-specific fitting
semidefinite programming
3L algorithm
relaxation programming
SURFACES
CURVES
ALGORITHM
Empirical Stochastic Modeling of Multipath Polarizations in Indoor Propagation Scenarios
期刊论文
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2015
Yin, Xuefeng
;
He, Yongyu
;
Ling, Cen
;
Tian, Li
;
Cheng, Xiang
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2017/12/03
Geometry-based stochastic channel model
high-resolution parameter estimation
polarization ellipse
wideband propagation channel
WIRELESS COMMUNICATIONS
SYSTEMS
CHANNEL
DIVERSITY
CAPACITY
The energy distribution of the imaging spot in the ultra-wide field-of-view fisheye lens acquisition system
其他
2015-01-01
Liu, Yueying
;
Tu, Bo
;
Liu, Lu
收藏
  |  
浏览/下载:4/0
  |  
提交时间:2017/12/03
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