English  |  正體中文  |  简体中文  |  Items with full text/Total items : 27533/39387
Visitors : 2543551      Online Users : 39
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/28695

Title: 改良式多重目標物之追蹤演算法
Authors: 何昇運;吳承勳;洪賢昇;張順雄
Contributors: NTOU:Department of Electrical Engineering
國立臺灣海洋大學:電機工程學系
Keywords: 訊號子空間;方位估測;投影近似子空間追蹤;近場;追蹤;多項式解根法;卡爾曼濾波器;角度預估
signal subspace;direction-of-arrival estimation;PAST;near-field;tracking;polynomial rooting;Kalman Filter;predict angle
Date: 2007-11
Issue Date: 2011-10-21T02:39:18Z
Publisher: 2007全國電信研討會, 台北科技大學
Abstract: Abstract:An adaptive MUSIC method (known as AMUSIC), based on subspace tracking and MUSIC, can be used for tracking multiple signal sources. However, when the signal sources are very close or even crossed, AMUSIC produces abnormally large errors in the angle estimation, thus leading to erroneous tracking results.
In order to overcome the aforementioned problem, we propose a improved adaptive tracking algorithm, known as KF-AMUSIC, for tracking near-field sources. This method uses angle estimates obtained from AMUSIC as input data for Kalman Filter, and determines a correspondence between angle estimates and signal sources in order to decide whether state estimates should be updated or not. Through the state estimation and prediction in KF, the proposed algorithm can improve the accuracy of angle estimate and tracking capability of signal sources.
摘要:結合子空間追蹤與MUSIC方位估測所形成的適應性MUSIC演算法(稱為AMUSIC),可用來估測多訊號源的移動軌跡。然而當訊號源互相接近甚至交錯時,此方法所估測的方位角會有嚴重的誤差,導致無法正確的追蹤訊號源。
為了有效解決上述的問題,本論文提出一個改良式的適應性近場訊號源追蹤演算法(稱之為KF-AMUSIC)。此方法利用AMUSIC所得到的方位估測角作為卡爾曼濾波器(KF)的輸入資料,並由所提的訊號源判定機制來決定訊號源的歸屬,以作為KF的狀態估測值更新與否之依據。藉由KF的狀態估測與預估特性,KF-AMUSIC可進一步改善方位估測的精確度及訊號源的追蹤能力。
URI: http://ntour.ntou.edu.tw/handle/987654321/28695
Appears in Collections:[電機工程學系] 演講及研討會

Files in This Item:

There are no files associated with this item.



All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback