Long and Medium-Term Research: Adaptive Parameter Estima- tion and Detection of Correlated Signals in Noise

中长期研究：噪声中相关信号的自适应参数估计和检测

• 批准号: 9102148
• 负责人: John Proakis
• 金额: $ 3.75万
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-01 至 1993-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9102148&HistoricalAwards=false
• 关键词: Long; Medium; Term; Research; Adaptive

Krim Long & Medium-Term Research: Adaptive Parameter Estimation and Detection of Correlated Signals in Noise This award is under the Program for Long-& Medium Term Research at Foreign Centers of Excellence, which enables U.S. scientists and engineers to conduct three to twelve months of research abroad at research centers of proven excellence. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award for a proposal sponsored by Dr. John C. Proakis of Northeastern University will support a twelve-month postdoctoral research visit by Dr. Hamid Krim at the Laboratoire des Signaux & Syst>mes, Ecole Sup>rieure d'Electricit>, Yvette, France. Dr. Krim will study estimation/detection with emphasis on array-processing problems. In subspace-based parameter estimation and detection techniques, in a turbulent dispersive medium, applications of high resolution methods for detecting transmitted signals (or estimating signal parameters) prove difficult. Dr. Krim recently proposed a data-based algorithm to estimate the direction of arrival of correlated (coherent) signals impinging on a linear array and has developed a generalized performance analysis specialized to this algorithm. He will extend this work thus: (1) To account for the nonstationarity of the transmitting medium (e.g., seasonal turbulence of the atmosphere) and accommodate for it, he proposes to derive an adaptive scheme that can be easily integrated into his current algorithm; (2) He will use some insightful results of a recent performance analysis to formally derive analytical bounds on the probability of resolving two closely spaced signals impinging on a linear array antenna. The stronger result of an exact probability will also be derived after some additional reasonable assumptions. This research should be of relevance to many applications including radar and sonar. The award recommendation provides funds to cover international travel, dependent's allowance, and a flat administrative allowance of $250 for the U.S. home institution.

Krim Long&Amp；中期研究：噪声中自适应参数估计和相关信号检测这个奖项是由长期和长期计划颁发的。外国卓越中心的中期研究，使美国科学家和工程师能够在国外公认的卓越研究中心进行为期三到十二个月的研究。该项目的奖项提供了联合研究的机会，并提供了使用国外独特或互补的设施、专业知识和实验条件的机会。该奖项由东北大学的John C.Proakis博士发起，将支持Hamid Krim博士为期12个月的博士后研究访问，他将在法国伊维特的Ecole Sup&gt；Ecole Sup&gt；实验室进行为期12个月的博士后研究访问。克里姆博士将研究估计/检测，重点是阵列处理问题。在基于子空间的参数估计和检测技术中，在湍流色散介质中，应用高分辨率方法来检测传输信号(或估计信号参数)是困难的。Krim博士最近提出了一种基于数据的算法来估计入射到线性阵列上的相关(相干)信号的到达方向，并开发了专门针对该算法的通用性能分析。他将这样扩展这项工作：(1)为了考虑传输介质的非平稳性(例如，大气的季节性湍流)并适应它，他建议推导出一种可以很容易地集成到他的当前算法中的自适应方案；(2)他将利用最近一次性能分析的一些有洞察力的结果，正式推导出解析两个近距离信号撞击线性阵列天线的概率的解析界。经过一些额外的合理假设，也将得到更强的精确概率结果。这项研究应该对包括雷达和声纳在内的许多应用具有相关性。奖励建议提供资金用于支付国际旅行、受抚养人津贴和美国本土机构250美元的固定行政津贴。