2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel最新文献_第7页

On the Deterministic-Code Capacity of the Two-User Discrete Memoryless Arbitrarily Varying General Broadcast Channel with Degraded Message Sets 具有退化消息集的两用户离散无记忆任意变化通用广播信道的确定性码容量研究

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321130

E. Hof, S. Bross

引用次数: 10

Minimax Regression with Bounded Noise 具有有界噪声的极大极小回归

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321098

Yonina C. Eldar, A. Beck

引用次数: 0

Design, Fabrication and Characterization of Thermally Evaporated Photonic Crystal Mirrors. 热蒸发光子晶体镜的设计、制造与表征。

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321124

M. Zenou, S. Goldin, M. Klebanov, V. Lyubin, A. Bruner, B. Sfez

引用次数: 1

Point Target Detection in Hyper-Spectral Images 高光谱图像中的点目标检测

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321089

S. Rotman, Irena Yatskaer

{"title":"Point Target Detection in Hyper-Spectral Images","authors":"S. Rotman, Irena Yatskaer","doi":"10.1109/EEEI.2006.321089","DOIUrl":"https://doi.org/10.1109/EEEI.2006.321089","url":null,"abstract":"The analysis of hyperspectral imagery promises to provide technical solutions to problems in many areas of research; this is particularly true of target acquisition. Exploiting high spectral resolution data contributes greatly to the discrimination power of standard image processing techniques. This additional dimension of information is based on the physical characteristics of the target material under consideration. The present research addresses the problem of the detection of a point target, moving with sub-pixel velocity, from a time sequence of hyperspectral data cubes. The emphasis in this paper will be on the degree of improvement in target detection algorithms that can be expected as a function of the degree of difference between the target and background signatures. Differences obtained between the use of real spectral signatures, compared to synthetic ones, for the noise, background and target end-members, and their implication on the detection results will be discussed. The standard matched filter for target detection is broadened and improved by advanced non-data dependent techniques. In order to estimate algorithm performance, five different tests (detection methods of varying sophistication) were applied to the real hyper-spectral data. The results were compared to the synthetic data outcome; conclusions regarding the threshold needed for spectral differences for the target detection to be notably improved are reached. The major focus of the research is a comparative understanding of the target detection results in different scenarios: strongly, partially and lightly cluttered sequences.","PeriodicalId":142814,"journal":{"name":"2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125198303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compression at the Source 源压缩

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321060

Nir Maor, A. Feuer

引用次数: 1

Tracking of a Point Target in an IR Sequence using Dynamic Programming Approach 用动态规划方法跟踪红外序列中的点目标

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321068

Ofir Nichtern, S. Rotman

{"title":"Tracking of a Point Target in an IR Sequence using Dynamic Programming Approach","authors":"Ofir Nichtern, S. Rotman","doi":"10.1109/EEEI.2006.321068","DOIUrl":"https://doi.org/10.1109/EEEI.2006.321068","url":null,"abstract":"Examination of more than one image is often needed for the detection of dim point targets in IR backgrounds. We introduce a novel tracking system based on the Track Before Detect Approach (TBD), designed to track and detect such dim maneuvering targets from an image sequence under low SNR conditions. The IR sequence is preprocessed first by using a whitening algorithm to reject clutter and emphasize targets. Afterwards, we use a Dynamic Programming Algorithm (DPA) which is not general since it requires a number of assumptions to hold, all satisfied in a first-order Hidden Markov Model (HMM). An IR sequence containing background noise, clutter, and a sub-pixel maneuvering target satisfies such model, where the target track is the hidden sequence of events, and the IR sequence frames are the observed sequence of events. At the end of this stage, after the last frame of the IR sequence has been processed, the pixel with the highest accumulated score is chosen as the Target, and its path is found. The paper deals with the different issues characterizing the system, enabling it to have versatility over a wide range of scenes. Future work will involve the use of the system for tracking of targets in hyperspectral cubes.","PeriodicalId":142814,"journal":{"name":"2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117320962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

An Informational Search for a Moving Target 对移动目标的信息搜索

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321133

E. Kagan, I. Ben-Gal

引用次数: 13

A Photovoltaic Maximum Power Point Tracking Scheme Realizing Nearly Optimal Load Emulation 一种实现近最优负载仿真的光伏最大功率点跟踪方案

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321115

M. Sokolov, D. Shmilovitz

引用次数: 0

On the Gaussian MAC with Imperfect Feedback 不完全反馈高斯MAC的研究

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321145

A. Lapidoth, M. Wigger

{"title":"On the Gaussian MAC with Imperfect Feedback","authors":"A. Lapidoth, M. Wigger","doi":"10.1109/EEEI.2006.321145","DOIUrl":"https://doi.org/10.1109/EEEI.2006.321145","url":null,"abstract":"New achievable regions are derived for the two-user additive white Gaussian multiple-access channel (MAC) with noisy feedback. We treat the general scenario as well as the symmetric setting and the partial feedback setting. Unlike previously-known achievable regions, the new regions yield sum-rates that are strictly larger than the no-feedback sum-rate capacity, irrespective of the (positive & finite) Gaussian feedback-noise variance. In the symmetric setting, our proposed coding scheme achieves sum-rates that converge to Ozarow's noiseless-feedback sum-rate capacity as the feedback-noise variance tends to zero. In the partial-feedback setting, where one of the transmitters has a perfect feedback link and the other has no feedback at all, we show that the Cover-Leung region (which was originally proposed for perfect-feedback channels but which was later shown to be achievable also with partial feedback) is not tight. This answers in the negative the question posed by van der Meulen as to whether the Cover-Leung region is tight for the Gaussian multiple-access channel with partial feedback. We also propose a coding scheme for the case where the receiver is cognizant of the realization of the noise on the feedback-link.","PeriodicalId":142814,"journal":{"name":"2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122266509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Searching for a Lion in the Desert Acquisition Algorithms for Networks of Sensors 沙漠中寻找狮子的传感器网络采集算法

2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel Pub Date : 2006-11-01 DOI: 10.1109/EEEI.2006.321139

Ronen I. Kat, D. Kedar, S. Dolev, S. Arnon

{"title":"Searching for a Lion in the Desert Acquisition Algorithms for Networks of Sensors","authors":"Ronen I. Kat, D. Kedar, S. Dolev, S. Arnon","doi":"10.1109/EEEI.2006.321139","DOIUrl":"https://doi.org/10.1109/EEEI.2006.321139","url":null,"abstract":"Networks of sensors are a promising emerging technology for high accuracy real-time data gathering in applications such as pollution monitoring, home security, surveillance, industrial control, etc. One of the possible communication modalities for sensor networks is optical wireless communication. A notable advantage of this method is the facility of passive communication where a base station illuminates an area containing sensor nodes equipped with retroreflecting mirrors. Thus, sensors can communicate with the base station, with minimal energy expenditure on the part of the sensors, by modulating the retroreflected light. Moreover, the location of the sensors can be mapped, with no energy expenditure by the sensors, using only the retroreflected light received at the base station. In this paper we analyze and compare different acquisition algorithms for networks of sensors using passive optical wireless communication. The goal of the acquisition algorithm is to locate sensors in a given area. We present a hexagonal search that is based on the binary search principle in order to locate a single sensor node. We use varying-diameter beams of constant power density to delineate the possible locations of a sensor node and reject areas where there are no sensors. The trade-off between the scan time and the achievable signal-to-noise ratio (SNR) (and consequent probability of detection) is investigated. Upon locating a sensor node, the base station can query and interrogate the node regarding its data. We compare the acquisition times for the binary search with a classical grid search that employs a small single size beam-spot.","PeriodicalId":142814,"journal":{"name":"2006 IEEE 24th Convention of Electrical & Electronics Engineers in Israel","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127804287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1