搜索结果: 1-15 共查到“信息与通信工程 Effects”相关记录15条 . 查询时间(0.191 秒)
Parallax Photography: Creating 3D Cinematic Effects from Stills
Image-Based Rendering Photo and Image editing .
2016/5/24
We present an approach to convert a small portion of a light field
with extracted depth information into a cinematic effect with simulated,
smooth camera motion that exhibits a sense of 3D parallax....
EFFECTS AND PERFORMANCE OF SPECKLE NOISE REDUCTION FILTERS ON ACTIVE RADAR AND SAR IMAGES
RADAR SAR Images Noise Speckle Filtering Adaptive Filter
2015/8/17
Reduction of speckle noise is one of the most important processes to increase the quality of radar coherent images. Image variances
or speckle is a granular noise that inherently exists in and degra...
The Effects of the Ionosphere and C/A Frequency on GPS Signal Shape:Considerations for GNSS-2
Effects Ionosphere C/A Frequency GPS Signal Shape Considerations
2015/6/29
By greatly increasing the chipping rate of the pseudo random noise (prn) code, it may be possible to measure the ionosphere (TEC) in near real time, by exploiting the dispersive nature of the ionosphe...
Burst Mode Message Loss Effects On WAAS Availability
Burst Mode Message Loss WAAS Availability
2015/6/29
The Wide Area Augmentation System (WAAS) is a GPS based navigation aid currently under development by the Federal Aviation Administration (FAA). WAAS will provide corrections to aviation users for the...
As the Loran groundwave propagates, the signal is delayed. Additional Secondary Factor (ASF) is the value of the delay of the signal over the actual terrain relative to an all seawater path. The envel...
The Effects of Large Ionospheric Gradients on Single Frequency Airborne Smoothing Filters for WAAS and LAAS
Large Ionospheric Gradients Single Frequency Airborne Smoothing Filters WAAS LAAS
2015/6/26
Both WAAS and LAAS receivers use carrier-smoothing filters to reduce the effects of multipath and thermal noise at the aircraft. For the majority of users this reduces the magnitude of the errors and ...
GPS Receiver Architecture Effects on Controlled Reception Pattern Antennas for JPALS
GPS Receiver Architecture Effects Controlled Reception Pattern Antennas JPALS
2015/6/26
Stanford University is developing a controlled reception pattern antenna (CRPA) array with beam research testbed to evaluate CRPA algorithms and software tools, and their effects on GPS signals and sa...
Effects of Signal Deformations on Modernized GNSS Signals
Signal Deformation Modernized GNSS Signals
2015/6/26
Satellite-based navigation requires precise knowledge of the structure of the transmitted signals.For GPS, accurate knowledge of the shape of the code correlation peaks is required to ensure no biases...
Ionospheric Scintillation Effects on GPS Receivers during Solar Minimum and Maximum
Ionospheric Scintillation Effects GPS Receivers Solar
2015/6/25
The ionosphere has practical importance in GPS (Global Positioning System) applications because it influences transionospheric radio wave propagation. Among various phenomena in the ionosphere, ionosp...
Wideband signals show promise for Galileo development and GPS modernization because they provide sharper correlation peaks and thus more accuracy.
Evaluation of Deep Signal Fading Effects Due to Ionospheric Scintillation on GPS Aviation Receivers
Deep Signal Fading Effects Due Ionospheric Scintillation GPS Aviation Receivers
2015/6/25
Deep and frequent GPS signal fading due to strong ionospheric scintillation is major concern for aircraft navigation in the equatorial region during solar maximum periods. Deep signal fading can break...
COGNITIVE CONSTRAINTS ON USING COLLABORATIVE LEARNING PORTALS: INVESTIGATING THEIR EFFECTS IN ONCOURSE CL
Indiana University
2015/5/27
Collaborative learning portals help teachers and students attain educational
objectives (Ursula et al., 1997). They also reduce repeated requests for the same
information (Forbes-Pitt, 2002). An eff...
Modeling information di usion is an often investigated area
in social network science. Optimizing propagation through targeting in-
teractions is an intriguing subfocus within this area, where the g...
Parameter estimates in random intercept mixed effects model for repeated measures
Repeated measures Random effects Convergence system Strong convergence Strong convergence rate
2007/12/11
In this article the following random intercept mixed effects model will be considered: $\ y_{ij}=v_{i}+ x_{ij}^{\tau}\beta+\epsilon_{ij}, i=1,\ldots,m;j=1,2,\ldots, n_{i},$ where $\{v_{i}\}$ are i.i.d...
期刊信息
篇名
The effects of time-varying channels on OFDM
语种
英文
撰写或编译
作者
Qin Shengping,Yin Changchuan,Luo Tao,Yue Guangxin
第一作者单位
刊物名称
The Journal of China Universities of Posts and Communications
页面
2004，...