2008 New Trends for Environmental Monitoring Using Passive Systems最新文献

On the wet tropospheric correction for altimetry in coastal regions 沿海地区湿对流层测高校正研究

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786991

C. Desportes, E. Obligis, L. Eymard

引用次数: 1

Detection and localization of very high energy neutrinos by a passive underwater acoustic telescope 被动水声望远镜对高能中微子的探测与定位

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786996

N. Juennard, C. Jauffret, B. Xerri

引用次数: 3

GPS ISAR passive system characterization using Point Spread Function GPS ISAR无源系统的点扩展函数表征

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786989

F. Maussang, F. Daout, G. Ginolhac, F. Schmitt

引用次数: 11

Robust smoothing to improve position estimates of vocalizing marine mammals 鲁棒平滑改进发声海洋哺乳动物的位置估计

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786993

I. Urazghildiiev, C. Clark

引用次数: 1

A proposed architecture for marine mammal tracking from globally distributed ocean acoustic observatories 一种基于全球分布海洋声学观测站的海洋哺乳动物跟踪体系结构

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786995

E. Delory, C. Waldmann, J. Fredericks

{"title":"A proposed architecture for marine mammal tracking from globally distributed ocean acoustic observatories","authors":"E. Delory, C. Waldmann, J. Fredericks","doi":"10.1109/PASSIVE.2008.4786995","DOIUrl":"https://doi.org/10.1109/PASSIVE.2008.4786995","url":null,"abstract":"The rise of deep-sea observatories across the planet (e.g. NEPTUNE, ESONET/EMSO, MARS, VENUS, DONET) offers an unprecedented opportunity to view ocean acoustic and marine mammal monitoring from a global perspective. It is expected that these observatories will be equipped with hydrophone arrays that will enable real-time acquisition of acoustic data, the amount of which will inevitably accelerate the need for efficient algorithms to reduce the time-bandwidth product to be broadcast over the internet. Though it is expected that the on-going research in acoustic pattern recognition will probably meet the milestone, a major issue remains to make these data computer-usable on a global scale. In order to enhance the potential of marine mammal passive monitoring tools it is therefore necessary that the hosted acoustic monitoring platforms be interoperable, i.e. sensors be discoverable from the internet, data catalogues and sensor metadata be accessible in standard format. Sensor-web enablement (OGC) currently offers an integrated solution through a set of recently approved standards. How these standards may be applicable to the task of interest is discussed and as a result, a global framework and architecture for marine mammal monitoring is presented from the perspective of a globally distributed acoustic monitoring network.","PeriodicalId":153349,"journal":{"name":"2008 New Trends for Environmental Monitoring Using Passive Systems","volume":"31 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":"123801091","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: 2

Assessing ocean salinity retrieval using WindSAT data over the Amazone river plume and North Brazil Current retroflection 利用亚马逊河羽流和北巴西洋流反射的WindSAT数据评估海洋盐度反演

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4787006

S. S. Picart, N. Reul, S. Guimbard, B. Chapron, D. Vandemark

{"title":"Assessing ocean salinity retrieval using WindSAT data over the Amazone river plume and North Brazil Current retroflection","authors":"S. S. Picart, N. Reul, S. Guimbard, B. Chapron, D. Vandemark","doi":"10.1109/PASSIVE.2008.4787006","DOIUrl":"https://doi.org/10.1109/PASSIVE.2008.4787006","url":null,"abstract":"Measurement of ocean surface salinity (SSS) dynamics from space involve precise determination of the dielectric characteristics of seawater through low-noise passive microwave (MW) radiometer measurement of the oceans brightness temperature (TB), optimally performed at a low frequency near 1.4 GHz (L-band). The future SMOS mission is based on such principles and will aim at retrieving SSS with an accuracy of the order of 0.1 psu (practical salinity units). This represents numerous engineering and scientific challenges, in particular because competing terms carried in the ocean TB measurements, foremost being sea surface temperature (SST) and ocean surface roughness, must be accounted for in a new and more robust manner. Prior to launch, we analyze the sensitivity of the future measurements to these factors by looking at somewhat higher frequency C and X-band data (6.8 and 10.7 versus the L-band 1.4 GHz) that are readily available from several recent MW imagers (AMSR-E, TMI, WindSAT). The shift to C and X-bands lowers TB sensitivity to changes in salinity by a large factor of 10-20. To compensate, we performed our study over the Amazon plume region where there are large (100-200 km) and persistent salinity contrasts that exceed the 0.1 psu science salinity requirement by a factor of 10-40 [1]-[2]. This region is of great importance within the salinity mission context due to the large freshwater flux and northward propagating eddies from retroreflection of the North Brazil Current (NBC). The validity of the emissivity/scattering models developed for SMOS at L-band are analyzed at these higher frequencies and our ability to detect these world largest salinity gradients is assessed.","PeriodicalId":153349,"journal":{"name":"2008 New Trends for Environmental Monitoring Using Passive Systems","volume":"69 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":"116512362","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

A comparison of methods for the automatic classification of marine mammal vocalizations in the Arctic 北极海洋哺乳动物发声自动分类方法比较

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786984

X. Mouy, D. Leary, B. Martin, M. Laurinolli

{"title":"A comparison of methods for the automatic classification of marine mammal vocalizations in the Arctic","authors":"X. Mouy, D. Leary, B. Martin, M. Laurinolli","doi":"10.1109/PASSIVE.2008.4786984","DOIUrl":"https://doi.org/10.1109/PASSIVE.2008.4786984","url":null,"abstract":"JASCO Applied Sciences provided acoustic data collection services to Shell Offshore Incorporated in support of their explorations of the Chukchi and Beaufort Seas during the summer of 2007. A total of 37 ocean bottom hydrophones data recording systems were deployed resulting in a data set in excess of 5 TB. This data equates to almost 5 years of continuous sound recording. This campaign provided information on the migration routes of the marine mammals, which include bowhead, beluga, humpback, gray whales and walruses. Given the large amount of data, manual analysis of the recordings was not feasible. A method to detect and classify the marine mammal vocalizations automatically in a reasonable amount of time had to be developed. The processing is structured in several steps, (1.) the detection of energy events, (2.) the feature extraction, and (3.) the classification into a species variety. This paper focuses on combining the Gaussian mixed models (GMM) algorithm for classification with attributes taken from two different feature extraction algorithms: cepstral coefficients and wavelets. Combinations of these different algorithms are compared using classification operating characteristic (COC) curves for each species tested. This paper compares the performance of these algorithms and their parameters against a large training data set.","PeriodicalId":153349,"journal":{"name":"2008 New Trends for Environmental Monitoring Using Passive Systems","volume":"19 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":"124446502","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

Project MOPS marine opportunity passive systems MOPS项目海上机会被动系统

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4787003

A. Coatanhay, R. Garello, B. Chapron, F. Ardhuin

引用次数: 8

Passive tomography in coastal areas: A feasibility study of the Ushant front monitoring 沿海被动层析成像:乌山锋面监测的可行性研究

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786979

O. Carrière, J. Hermand, Y. Stéphan

引用次数: 6

A phase based detector of whale clicks 基于相位的鲸鱼点击检测器

2008 New Trends for Environmental Monitoring Using Passive Systems Pub Date : 2008-10-01 DOI: 10.1109/PASSIVE.2008.4786986

V. Kandia, Y. Stylianou

引用次数: 4