搜索结果: 151-165 共查到“知识库 传感器技术”相关记录2838条 . 查询时间(2.163 秒)
Accurate Prediction of Phase Transitions in Compressed Sensing via a Connection to Minimax Denoising
Approximate Message Passing Lasso Group Lasso, Joint Sparsity, James- Stein, Minimax Risk over Nearly-Black Objects Minimax Risk of Soft Thresholding Minimax Risk of Firm Thresholding Minimax Shrinkage Nonconvex penalization State Evolution Total Variation Minimization Monotone Regression.
2015/8/21
Compressed sensing posits that, within limits, one can undersample a sparse signal and yet reconstruct it accurately. Knowing the precise limits to such undersampling is important both for theory and ...
Compressed Sensing MRI
Compressed Sensing MRI
2015/8/21
Compressed sensing (CS) aims to reconstruct signals and images from significantly fewer
measurements than were traditionally thought necessary. Magnetic Resonance Imaging (MRI) is
an essential...
Extensions of Compressed Sensing
Basis Pursuit Underdetermined Systems of Linear Equations
2015/8/21
We study the notion of Compressed Sensing (CS) as put forward in [14] and related work
[20, 3, 4]. The basic idea behind CS is that a signal or image, unknown but supposed to
be compressible by a kn...
Suppose x is an unknown vector in R
m (depending on context, a digital image or signal);
we plan to acquire data and then reconstruct. Nominally this ‘should’ require m samples. But
suppose we know...
Message-passing algorithms for compressed sensing
Compressed sensing high-dimensional signals the iterative threshold algorithm
2015/8/21
Compressed sensing aims to undersample certain high-dimensional signals yet accurately reconstruct them by exploiting signal characteristics. Accurate reconstruction is possible when the object to be ...
构建底层逻辑树能有效降低集中式top-k查询带来的巨大通信开销，针对现有逻辑树都以固定汇聚节点为根节点，导致其附近节点能耗太大、过早死亡的问题，本文在无固定汇聚节点的网络背景下，基于连通支配集，提出一种能耗均衡的top-k查询最优支撑树构建方法，综合节点能量、度数以及与邻节点通信开销，选取能量代价小的作为支配节点负责查询中间数据处理，在每次查询中，节点基于地理位置ID轮流作为根节点，有效均衡节点的...
A scheme for robust distributed sensor fusion based on average consensus
Distributed sensor network sensor linear measurement gaussian noise the data
2015/8/11
We consider a network of distributed sensors, where each sensor takes a linear measurement of some unknown parameters, corrupted by independent Gaussian noises. We propose a simple distributed iterati...
Randomized gossip algorithms
Application of sensor networks a distributed algorithm gossip algorithm exchange information to connect to the Internet and topology
2015/8/10
Motivated by applications to sensor, peer-to-peer and ad hoc networks, we study distributed algorithms, also known as gossip algorithms, for exchanging information and for computing in an arbitrarily ...
A space-time diffusion scheme for peer-to-peer least-squares estimation
distributed algorithms sensor networks least-squares estimation
2015/8/10
We consider a sensor network in which each sensor takes measurements, at various times, of some unknown parameters, corrupted by independent Gaussian noises. Each node can take a finite or infinite nu...
Further relaxations of the semidefinite programming approach to sensor network localization
Semidefinite programming sensor networks positioning sensors
2015/8/10
Recently, a semidefinite programming (SDP) relaxation approach has been proposed to solve the sensor network localization problem. Although it achieves high accuracy in estimating the sensor locations...
We consider the problem of choosing a set of k sensor measurements, from a set of m possible or potential sensor measurements, that minimizes the error in estimating some parameters. Solving this prob...
Estimation of faults in DC electrical power system
Dc power system fault the fault change circuits sensors electric circuit the linear model
2015/8/7
This paper demonstrates a novel optimization-based approach to estimating fault states in a DC power system. The model includes faults changing the circuit topology along with sensor faults. Our appro...
LEAF AREA INDEX RETRIEVAL USING IRS LISS-III SENSOR DATA AND VALIDATION OF MODIS LAI PRODUCT OVER INDIA
Remote Sensing Crop IRS Retrieval Comparison
2015/7/29
This paper reports results of an experiment LRVE (Leaf Area Index Retrieval and Validation Experiment) that was conducted over
agricultural areas of Central India during winter season of 2001-02, ai...
电量传感器高可靠性试验技术
可靠性 筛选度 环境应力 失效
2016/4/6
针对电量传感器产品可靠性问题的愈加突出，总结最高效的电量传感器可靠性筛选试验方法。对电子产品的可靠性试验技术及其数学模型进行介绍，重点阐述适合电量传感器的环境应力筛选试验项目，对各试验筛选强度和筛选效率进行探讨，并提出改进建议，可为电量传感器应用行业的产品可靠性研究提供参考。