2008 New Trends for Environmental Monitoring Using Passive Systems最新文献_第2页

Impact of surface roughness on L-band emissivity of the ocean -Theoretical and empirical analysis- 表面粗糙度对海洋l波段发射率的影响-理论与经验分析-

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4787007

S. Guimbard, N. Reul, J. Tenerelli, B. Chapron

引用次数: 0

GSM based through-the-wall passive radar demonstrator for motion sensing 基于GSM的穿墙无源雷达运动传感演示器

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786997

D. Tan, M. Lesturgie, Hongbo Sun, Wei Li, Yilong Lu

{"title":"GSM based through-the-wall passive radar demonstrator for motion sensing","authors":"D. Tan, M. Lesturgie, Hongbo Sun, Wei Li, Yilong Lu","doi":"10.1109/PASSIVE.2008.4786997","DOIUrl":"https://doi.org/10.1109/PASSIVE.2008.4786997","url":null,"abstract":"Through-the-wall detections have many vital applications, including the potential to conduct surveillance through walls and the ability to detect the presence of living people behind doors or other barriers. These covert surveillances and personnel detections are of high interest in urban warfare applications. This research work assesses the feasibility of using global system for mobile communications (GSM) signal as the transmission of opportunity in the through-the-wall motion detection passive radar and subsequently developing and implementing a fully functional GSM based through-the-wall passive radar demonstrator for motion sensing. Experimental trials to validate the feasibility of motion detection through the wall were conducted using GSM transmissions from an operational GSM base station transmitter. The Doppler frequency of a cooperative human inside an enclosed room corresponding to him walking to and from the brick wall can be prominently detected and tracked. These encouraging results path the way for more thorough and in-depth research into this novel ground breaking through-the-wall passive surveillance radar technology.","PeriodicalId":153349,"journal":{"name":"2008 New Trends for Environmental Monitoring Using Passive Systems","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131613707","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: 7

Computer-aided classification of bowhead whale call categories for mitigation monitoring 缓解监测用弓头鲸叫声分类的计算机辅助分类

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786985

D. Mathias, A. Thode, S. B. Blackwell, C. Greene

{"title":"Computer-aided classification of bowhead whale call categories for mitigation monitoring","authors":"D. Mathias, A. Thode, S. B. Blackwell, C. Greene","doi":"10.1109/PASSIVE.2008.4786985","DOIUrl":"https://doi.org/10.1109/PASSIVE.2008.4786985","url":null,"abstract":"Since 2001 Directional Autonomous Seafloor Acoustic Recorders (DASARs) have been used to localize and record bowhead whale (Balaena mysticetus) calls during their annual migration. In 2007 DASARs were deployed at 35 locations over a 280 km swath in the Beaufort Sea, during seismic exploration activities (Fig. 1), in order to monitor potential changes in the animals' location and/or acoustic activity during the seismic activities. The large amount of acoustic data generated (about 50 days per DASAR) motivated the development of computer-aided methods to assist in detecting and classifying bowhead whale calls. Bowhead whale calls can be classified in various ways. Here, we divide calls into six categories: (1) upsweeps, (2) downsweeps, (3) constant calls, (4) u-shaped and (5) n-shaped undulated calls, and (6) complex calls, a catch-all category that covers both frequency-modulated calls with multiple inflections, and amplitude-modulated calls such as warbles, growls, and other such sounds. In addition, walrus and bearded seal calls can produce similar call features in a spectrogram, yielding a total of eight classification categories. The frequency range, duration, and fine structure of individual calls vary considerably even within each category, creating difficulties when using simple matched- filtering or spectrogram correlation methods. A manually reviewed test dataset was assembled, containing examples from each call category, arranged by signal-to-noise ratio (SNR) in 5 dB bins, ranging from 5 to 40 dB. The dataset was then used to test several methods for extracting relevant parameters from the signal for subsequent classification. Contour tracing methods that estimate frequency bandwidth, inflection points, and duration were examined, as well as other boundary descriptors that utilize standard image segmentation techniques. An optimization procedure was then used to determine appropriate decision boundaries for optimum statistical classifiers.","PeriodicalId":153349,"journal":{"name":"2008 New Trends for Environmental Monitoring Using Passive Systems","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125651139","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: 5

Flood-fill algorithms used for passive acoustic detection and tracking 用于被动声学探测和跟踪的洪水填充算法

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786975

E. Nosal

引用次数: 52

HF passive bistatic radar potential and applications for remote sensing 高频无源双基地雷达在遥感领域的潜力及应用

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4787001

J. Thomas, C. Baker, H. Griffiths

引用次数: 18

A comparison of interpolation processes: Applications to across-track scanning radiometers 插值过程的比较:在跨轨迹扫描辐射计上的应用

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786990

B. Picard, E. Obligis, Marie-Laure Denneulin

{"title":"A comparison of interpolation processes: Applications to across-track scanning radiometers","authors":"B. Picard, E. Obligis, Marie-Laure Denneulin","doi":"10.1109/PASSIVE.2008.4786990","DOIUrl":"https://doi.org/10.1109/PASSIVE.2008.4786990","url":null,"abstract":"This paper shows the first results of a more complete study on the comparison of interpolation methods applied to conically scanning and across-track scanning radiometers. The goal here is to present the performances of two interpolation algorithms for the interpolation of the raw measurements (samples) onto non-overlapping pixels, regularly localized along a scan of an across-track radiometer. The originality of the approach is the use of an end-to-end simulator including: (1) high resolution 2D realistic brightness temperature (TB) scenes computed from geophysical fields thanks to a radiative transfer model when previous studies have used synthetic ID profiles, (2) 2D convolution of the scene by Gaussian or measured antenna patterns at any pointing angle (defined by azimuth and elevation) when previous studies have used ID convolution of synthetic antenna patterns pointing at nadir, (3) notion of temporal integration when computing the raw radiometric measurements when previous studies have used instantaneous fields of view (IFOV) Both synthetic and high resolution realistic scenes, including or not radiometric noise, are used as referenced fields to assess the performances of these algorithms in term of radiometric accuracy and radiometric sensitivity. The simulation of the measurements is based on the convolution of the scene by the antenna patterns and takes into account the notion of Effective Field Of View (EFOV). The two interpolation processes are: (1) a purely geometric process based on the surface intersection between measurements (samples) and pixels -3dB beams projected on Earth. (2) the well-known Backus-Gilbert algorithm. The two methods show the same performance in term of radiometric accuracy when the Backus-Gilbert allows a better reduction of the radiometric noise.","PeriodicalId":153349,"journal":{"name":"2008 New Trends for Environmental Monitoring Using Passive Systems","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115125590","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

Improve the accuracy of TDOA measurement using the Teager-Kaiser energy operator 利用Teager-Kaiser能量算子提高TDOA测量的精度

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786987

V. Kandia, Y. Stylianou, T. Dutoit

引用次数: 4

Mallat's Matching Pursuit of sperm whale clicks in real-time using Daubechies 15 wavelets 马拉特使用Daubechies 15小波实时匹配抹香鲸的点击

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786977

F. Lelandais, H. Glotin

引用次数: 4

Estimating the number of beaked whales using an MHT tracker 使用MHT追踪器估计喙鲸的数量

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786999

O. Gérard, C. Carthel, S. Coraluppi

引用次数: 3

A real time seismological station at 2500 m depth in front Toulon 土伦前方2500米深度实时地震台站

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786998

A. Deschamps, Y. Hello, P. Charvis, T. Frontera, C. Gojak

引用次数: 1