搜索结果: 1-15 共查到“信息与通信工程 Noise”相关记录21条 . 查询时间(0.13 秒)
An Insitu Single-pointed Wavelet-Based Method for Noise Reduction in SAR Images
Synthetic Aperture Radar (SAR) Speckle noise Insitu Single-pointed Wavelet-based (ISPW) Method,
2015/11/20
Speckle noise caused by interference of electromagnetic waves complicates Synthetic aperture radar (SAR) images to be interpreted and further practical application, therefore reducing speckle noise an...
Stable Recovery of Sparse Overcomplete Representations in the Presence of Noise
Sparse representation Overcomplete Representation
2015/8/21
Overcomplete representations are attracting interest in signal processing theory, particularly due
to their potential to generate sparse representations of signals. However, in general, the problem o...
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...
Gain Fixed Pattern Noise Correction via Optical Flow
Digital camera CMOS image sensor Fixed pattern noise (FPN) Optical fl ow estimation gain FPN CDS
2015/8/17
Fixed pattern noise (FPN) or nonuniformity caused by device and interconnect parameter variations across an image sensor is a major source of image quality degradation especially in CMOS image sensors...
Analysis of 1/f noise in CMOS APS
bthreshold operation nonstationary 1/f noise model time domain noise analysis CMOS APS image sensor
2015/8/17
As CMOS technology scales, the effect of 1/f noise on low frequency analog circuits such as CMOS image sensors becomes more pronounced, and therefore must be more accurately estimated. Analysis of 1/f...
Analysis of Temporal Noise in CMOS APS
emporal noise subthreshold operation reset noise shot noise CMOS APS image sensor
2015/8/17
Temporal noise sets a fundamental limit on image sensor performance, especially under low illumination and in video applications. In a CCD image sensor, temporal noise is well studied and characterize...
Analysis of Temporal Noise in CMOS Photodiode Active Pixel Sensor
CMOS APS image sensor reset noise shot noise subthreshold operation temporal noise time-domain noise analysis
2015/8/12
Temporal noise sets the fundamental limit on image sensor performance, especially under low illumination and in video applications. In a CCD image sensor, temporal noise is primarily due to the photod...
Decision noise:An explanation for observed violations of signal detection theory
Decision noise observed violations signal detection theory
2015/7/28
In signal detection theory (SDT), responses are governed by perceptual noise and a flexible decision criterion. Recent criticisms of SDT (see, eg, Balakrishnan, 1999) have identified violations of its...
Lightning and other atmospheric noise interferes with Loran signal reception. This paper develops techniques to improve signal availability under these conditions.
With its wide bandwidth and large amplitude spikes,atmospheric noise can dominate the Loran band (90-110kHz). Data collection efforts over the spring and summer of 2005 in Norman, OK and over th...
Analysis of Noise and Cycle Selection in a Loran Receiver
Analysis of Noise Cycle Selection Loran Receiver
2015/6/25
Thermal and atmospheric noise distort envelope measurements in a Loran receiver, and may cause the receiver to select the wrong cycle during signal acquisition. A cycle error would persist during sign...
With its large-amplitude and short-duration pulses,atmospheric noise, produced by electrical discharges within clouds, dominates the low-frequency spectrum. Unless mitigated, this noise, which enters ...
Millimeter Wave Indium Phosphide Heterojunction Bipolar Transistors: Noise Performance and Circuit Applications
InP HBT LNA Modelling Transistor Small-signal modelling
2014/12/8
The performance of III-V heterojunction bipolar transistors (HBTs) has improved significantly over the past two decades. Today’s state of the art Indium Phosphide (InP) HBTs have a maximum frequency o...
Modeling Correlation Noise Statistics at Decoder for Multi-View Distributed Video Coding
Modeling Correlation Noise Statistics Decoder Multi-View Distributed Video Coding
2009/12/31
Recently, multi-view distributed video coding (MDVC) receives more and more attention, as its lowcomplexity encoder and high-complexity decoder coding paradigm suits for many applications such as sens...
Image Authentication Using Added Signal-Dependent Noise
Image Authentication Added Signal-Dependent Noise
2009/9/4
Image authentication has applications in security systems, photo forensics, and photo journalism. This paper presents an image authentication scheme using added signal-dependent noise. Imperceptible n...