发布求助
文献互助 智能选刊 最新文献

2006 International Waveform Diversity & Design Conference最新文献

筛选
英文 中文
Finite Heisenberg-Weyl groups and golay complementary sequences 有限Heisenberg-Weyl群与golay互补序列
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321452
S. Howard, A. Calderbank, W. Moran
{"title":"Finite Heisenberg-Weyl groups and golay complementary sequences","authors":"S. Howard, A. Calderbank, W. Moran","doi":"10.1109/WDD.2006.8321452","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321452","url":null,"abstract":"We provide a new way of understanding Golay pairs (of length N) of sequences in terms of the (2N + 1)-dimensional discrete Heisenberg-Weyl group over the field Z2. Our methodology provides a different insight into the nature of these sequences, as well as a mechanism for designing sequences with desirable correlation properties. Libraries of waveforms formed using these constructions are able to provide collections of ambiguity functions that cover the range-Doppler plane in an efficient way, and thus provide the basis for a suite of waveforms optimized for extraction of information from the environment in an active sensing context.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117216922","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: 11
Intrinsic processing gains in noise radar 噪声雷达的本征处理增益
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321462
B. Rigling
{"title":"Intrinsic processing gains in noise radar","authors":"B. Rigling","doi":"10.1109/WDD.2006.8321462","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321462","url":null,"abstract":"In continuous wave noise radar, pseudo-pulse compression is typically accomplished through a simple cross-correlation of the received and reference signals. We consider the use of adaptive filtering algorithms in pseudo-pulse compression for air-to-ground noise radar. Through analysis and simulations, we compare the SNR performance of cross-correlation to channel estimation via the LMS algorithm. The LMS algorithm was found to provide improved performance, relative to cross-correlation, as the number of observed targets increases.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"31 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132498157","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
Waveform manipulation with time-reversed over-the-horizon radars 时间反转超视距雷达的波形操纵
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321513
E. Paek, J. Choe
{"title":"Waveform manipulation with time-reversed over-the-horizon radars","authors":"E. Paek, J. Choe","doi":"10.1109/WDD.2006.8321513","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321513","url":null,"abstract":"In this paper we present methods to enhance the performance of current over-the-horizon (OTH) radars using time-reversal in three different aspects: ionospheric distortion compensation, resolution enhancement, and mitigation of multipath interference. In addition, a new imaging radar concept based on time-reversal will be presented.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"456 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132901567","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
Characterization of shallow water environments and waveform design for diversity 浅水环境的特征和多样性的波形设计
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321436
Ye Jiang, Hao Shen, A. Papandreou-Suppappola
{"title":"Characterization of shallow water environments and waveform design for diversity","authors":"Ye Jiang, Hao Shen, A. Papandreou-Suppappola","doi":"10.1109/WDD.2006.8321436","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321436","url":null,"abstract":"In this paper, we investigate the dispersive characterization of shallow water environments for acoustic transmissions, and we develop a time-varying system representation to model its dispersive propagation characteristics. We also obtain the discrete model of this representation using a transform-based approach or by nonlinearly warping the discrete time-frequency model of narrowband environments. Using this discrete model in a shallow water communication application, we design a wideband time varying waveform to match the dispersive nature of the environment. As we demonstrate with numerical results, the design can provide dispersive Doppler diversity by employing maximal ratio combining techniques.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131617055","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: 4
Waveform diversity in multistatic radar 多基地雷达中的波形分集
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321509
G. Capraro, I. Bradaric, D. Weiner, R. Day, J. Perretta, M. Wicks
{"title":"Waveform diversity in multistatic radar","authors":"G. Capraro, I. Bradaric, D. Weiner, R. Day, J. Perretta, M. Wicks","doi":"10.1109/WDD.2006.8321509","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321509","url":null,"abstract":"Future military sensor systems will contain intelligent software that will dynamically assess a scenario and modify its emissions and its receiver's signal and data processing to enhance performance. This capability is of particular interest in multistatic radar situations. Multiple receivers and one transmitter configuration is presented where the weights for fusing multiple receivers are addressed. By choosing the proper waveforms and their parameters the distortion experienced with difficult multiple triangles may be neutralized. A multistatic radar ambiguity function is developed and used to assess performance for varying configurations. Simulations are performed demonstrating how rules will be developed for choosing the proper waveforms for use in an autonomous intelligent radar system (AIRS).","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134498381","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: 19
Single pulse imaging 单脉冲成像
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321492
S. Blunt, A. Shackelford, K. Gerlach
{"title":"Single pulse imaging","authors":"S. Blunt, A. Shackelford, K. Gerlach","doi":"10.1109/WDD.2006.8321492","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321492","url":null,"abstract":"A novel radar receiver processing technique is presented which utilizes the Doppler phase shift resulting from high-speed targets to produce a range/Doppler image from the return signal of a single radar pulse. Denoted as Single Pulse Imaging (SPI), this technique utilizes the general framework of the Multistatic Adaptive Pulse Compression (MAPC) algorithm and applies it to monostatic radar in which Doppler-shifted realizations of the transmitted waveform are treated as different waveforms that have illuminated different range profiles thereby resulting in the superposition of different signals at the receiver. The joint separation and pulse compression of the set of received signals produces a range/Doppler image whereby, given sufficient disparity in radial velocity (and thus sufficient Doppler phase-shift diversity), individual scatterers within the same range cell can be discerned.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122793783","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: 9
An adaptive waveform method for aperture optimization 孔径优化的自适应波形方法
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321424
R. Bonneau
{"title":"An adaptive waveform method for aperture optimization","authors":"R. Bonneau","doi":"10.1109/WDD.2006.8321424","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321424","url":null,"abstract":"Classical detection theory for sensing relies on fixed target illumination and independent identically distributed noise for target and clutter characterization. Unfortunately in many cases such as sensing and communications in urban or atmospheric scenarios, we encounter much more complex clutter and target conditions due to scattering from multiple sources. As a result we must envision a new sensing scheme to combat noise not handled by classical sensing methods. We will therefore develop framework whereby we can use the waveform to manage the physical scattering process such that our return statistics conform to the classical detection assumption such as independent identically distributed data. We will first describe how to use a well known set of waveforms in the context of a given aperture and how these waveforms propagate when we consider the wideband multi-frequency nature of the waveform. To accomplish this we will characterize different apertures in the context of varying amounts of instantaneous bandwidth and center frequency using coherence length and coherence time of the waveform in the aperture. We will then characterize the scattering process in the same context and show how the waveform must be designed using coherence principles of the scattering environment. Finally will show how our waveform process improves our discrimination performance and conclude with a detection example of this process.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129088544","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 transform domain communication and jamming waveform 一种变换域通信与干扰波形
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1049/SBRA023E_CH10
Abel S. Nunez, V. Chakravarthy, J. T. Caldwell
{"title":"A transform domain communication and jamming waveform","authors":"Abel S. Nunez, V. Chakravarthy, J. T. Caldwell","doi":"10.1049/SBRA023E_CH10","DOIUrl":"https://doi.org/10.1049/SBRA023E_CH10","url":null,"abstract":"A multi-function waveform is proposed which is able to avoid transmitting on frequencies used by other users. It is also able, with prior knowledge, to jam enemy communications while creating little interference for friendly users and no interference for itself.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129401293","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
The effects of neighboring buildings on the indoor wireless channel at 2.4 and 5.8 GHz 邻近建筑物对2.4 GHz和5.8 GHz室内无线信道的影响
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321498
Do-Young Kwak, Chang-Hoon Lee, Eun-Su Kim, Seong-Cheol Kim, Joon-Seuk Choi
{"title":"The effects of neighboring buildings on the indoor wireless channel at 2.4 and 5.8 GHz","authors":"Do-Young Kwak, Chang-Hoon Lee, Eun-Su Kim, Seong-Cheol Kim, Joon-Seuk Choi","doi":"10.1109/WDD.2006.8321498","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321498","url":null,"abstract":"The effects of neighboring buildings (NB's) on the indoor wireless channel are examined both in time and space domain at 2.4 GHz and 5.8 GHz band using the computer simulation of radio wave propagation based on ray-tracing technique. The NB's in the apartment environments have a considerable effect on the channel characteristics, such as the exponents of path loss, mean excess delay, rms delay spread time, coherence bandwidth, and angle dispersion of received rays. Also the effects are shown to be different according to the frequency band.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116680384","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
Range-dependent beamforming using element level waveform diversity 使用单元级波形分集的距离相关波束形成
2006 International Waveform Diversity & Design Conference Pub Date : 1900-01-01 DOI: 10.1109/WDD.2006.8321488
P. Antonik, M. Wicks, H. Griffiths, C. Baker
{"title":"Range-dependent beamforming using element level waveform diversity","authors":"P. Antonik, M. Wicks, H. Griffiths, C. Baker","doi":"10.1109/WDD.2006.8321488","DOIUrl":"https://doi.org/10.1109/WDD.2006.8321488","url":null,"abstract":"This paper presents a novel concept for focusing an antenna beam pattern as a function of range. In conventional phased arrays, beam steering is achieved by applying a linear phase progression across the aperture. Without this phase progression, the antenna beam points to broadside. However, a linear phase progression causes the electric field from each element to constructively sum in the far-field in a direction off broadside, resulting in an electronic scan. For a given linear phase progression, this scan remains fixed for all ranges in the far field. This paper shows that by applying an additional linear frequency shift across the elements, a new term is generated which results in a scan angle that varies with range in the far-field.","PeriodicalId":339522,"journal":{"name":"2006 International Waveform Diversity & Design Conference","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116663388","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: 167
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信