Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Joint Angle and Frequency Estimation Using Multiple-Delay Output Based on ESPRIT | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2010 Article ID 358659 6 pages doi 2010 358659 Research Article Joint Angle and Frequency Estimation Using Multiple-Delay Output Based on ESPRIT Wang Xudong Department of Electronic Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Correspondence should be addressed to Wang Xudong xudong@ Received 29 August 2010 Revised 6 December 2010 Accepted 21 December 2010 Academic Editor Ricardo Merched Copyright 2010 Wang Xudong. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. This paper presents a novel ESPRIT algorithm-based joint angle and frequency estimation using multiple-delay output MDJAFE . The algorithm can estimate the joint angles and frequencies since the use of multiple output makes the estimation accuracy greatly improved when compared with a conventional algorithm. The useful behavior of the proposed algorithm is verified by simulations. 1. Introduction Antenna array has been used in many fields such as radar sonar electron reconnaissance and seismic data processing. The direction-of-arrival- DOA- estimation of signals impinging on an array of sensors is a fundamental problem in array processing 1-5 . Angle estimation and frequency estimation 6 7 are two key problems in the signal processing field. The problem of joint DOA and frequency estimation arises in the applications of radar wireless communications and electron reconnaissance. For example these parameters can be applied to locate the radars and to locate pilot tones in electron reconnaissance systems 8 . Furthermore a precise estimation of these parameters is helpful to attain a better pulse descriptor word PDW and thus enhances the system performance. Optimal techniques based on maximum likelihood 9 are
