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This paper proposes a novel approach to robust radar detection of range-spread targets embedded in Gaussian noise with unknown covariance matrix. The idea is to model the useful target echo in each range cell as the sum of a coherent signal…

信号处理 · 电气工程与系统科学 2022-10-04 Angelo Coluccia , Alessio Fascista , Giuseppe Ricci

Gravitational wave detectors from the advanced generation onwards are expected to be limited in sensitivity by thermal noise of the optics, making the reduction of this noise a key factor in the success of such detectors. A proposed method…

Baseband processing algorithms often require knowledge of the noise power, signal power, or signal-to-noise ratio (SNR). In practice, these parameters are typically unknown and must be estimated. Furthermore, the mean-square error (MSE) is…

信号处理 · 电气工程与系统科学 2023-03-28 Alexandra Gallyas-Sanhueza , Christoph Studer

Blind and universal image denoising consists of using a unique model that denoises images with any level of noise. It is especially practical as noise levels do not need to be known when the model is developed or at test time. We propose a…

计算机视觉与模式识别 · 计算机科学 2020-03-10 Majed El Helou , Sabine Süsstrunk

It is well known that asynchronous impulsive noise is the main source of distortion that drastically affects the power-line communications (PLC) performance. Recently, more realistic models have been proposed in the literature which better…

信息论 · 计算机科学 2015-02-25 Kassim Khalil , Patrick CORLAY , François-Xavier Coudoux , Marc G. Gazalet , Mohamed Gharbi

In this paper we introduce a system for unsupervised object discovery and segmentation of RGBD-images. The system models the sensor noise directly from data, allowing accurate segmentation without sensor specific hand tuning of measurement…

机器人学 · 计算机科学 2017-10-20 Johan Ekekrantz , Nils Bore , Rares Ambrus , John Folkesson , Patric Jensfelt

Impulse response estimation in high noise and in-the-wild settings, with minimal control of the underlying data distributions, is a challenging problem. We propose a novel framework for parameterizing and estimating impulse responses based…

声音 · 计算机科学 2022-02-08 Alexander Richard , Peter Dodds , Vamsi Krishna Ithapu

Digital sensors can lead to noisy results under many circumstances. To be able to remove the undesired noise from images, proper noise modeling and an accurate noise parameter estimation is crucial. In this project, we use a…

图像与视频处理 · 电气工程与系统科学 2022-12-21 Étienne Objois , Kaan Okumuş , Nicolas Bähler

In many communication scenarios, the communication signals simultaneously suffer from white Gaussian noise (WGN) and non-Gaussian impulsive noise (IN), i.e., mixed Gaussian-impulsive noise (MGIN). Under MGIN channel, classical communication…

信号处理 · 电气工程与系统科学 2023-01-20 Chengjie Zhao , Jun Wang , Wei Huang , Xiaonan Chen , Tianfu Qi

This article studies the problem of image restoration of observed images corrupted by impulse noise and mixed Gaussian impulse noise. Since the pixels damaged by impulse noise contain no information about the true image, how to find this…

最优化与控制 · 数学 2014-07-30 Ming Yan

Biochemical signal transduction, a form of molecular communication, can be modeled using graphical Markov channels with input-modulated transition rates. Such channel models are strongly non-Gaussian. In this paper we use a linear noise…

定量方法 · 定量生物学 2019-08-30 Gregory R. Hessler , Andrew W. Eckford , Peter J. Thomas

This paper investigates distributed detection of sparse stochastic signals with quantized measurements under Byzantine attacks. Under this type of attack, sensors in the networks might send falsified data to degrade system performance. The…

信号处理 · 电气工程与系统科学 2023-05-01 Chen Quan , Yunghsiang S. Han , Baocheng Geng , Pramod K. Varshney

An analytic model a la Middleton of the impulsive noise component in the data of interferometric gravitational wave detectors is proposed, based on an atomic representation of glitches. A fully analytic characterization of the coherent…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Maria Principe , Innocenzo M Pinto

Understanding and dealing with inference biases in gravitational-wave (GW) parameter estimation when a plethora of signals are present in the data is one of the key challenges for the analysis of data from future GW detectors. Working…

广义相对论与量子宇宙学 · 物理学 2021-08-25 Andrea Antonelli , Ollie Burke , Jonathan R. Gair

The novel approach was developed for multilevel signal detection in channels with impulsive non-Gaussian noise. This approach consists of using morphological nonlinear image filtration principles for two dimensional signals. It is a new…

信息论 · 计算机科学 2015-03-04 Sander Stepanov , Anastasios Venetsanopoulos

Self-supervised blind denoising for Poisson-Gaussian noise remains a challenging task. Pseudo-supervised pairs constructed from single noisy images re-corrupt the signal and degrade the performance. The visible blindspots solve the…

计算机视觉与模式识别 · 计算机科学 2023-03-15 Zejin Wang , Jiazheng Liu , Hao Zhai , Hua Han

In order to analyze data produced by the kilometer-scale gravitational wave detectors that will begin operation early next century, one needs to develop robust statistical tools capable of extracting weak signals from the detector noise.…

广义相对论与量子宇宙学 · 物理学 2010-01-06 Jolien D. E. Creighton

In this paper, we consider the problems of state estimation and false data injection detection in smart grid when the measurements are corrupted by colored Gaussian noise. By modeling the noise with the autoregressive process, we estimate…

系统与控制 · 计算机科学 2016-07-21 Bo Tang , Jun Yan , Steven Kay , Haibo He

We consider the problem of detecting the presence of a spatially correlated multichannel signal corrupted by additive Gaussian noise (i.i.d across sensors). No prior knowledge is assumed about the system parameters such as the noise…

信息论 · 计算机科学 2013-04-19 Vidyadhar Upadhya , Devendra Jalihal

A new straightforward universal blind detection algorithm for linear Gaussian channel with ISI is given. A new error exponent is derived, which is better than Gallager's random coding error exponent.

信息论 · 计算机科学 2008-01-04 Lóránt Farkas