Dissertation > Excellent graduate degree dissertation topics show

Study on Algorithm of Signal Parameters Estimation Based on Polarization Array

Author: LiuYang
Tutor: WuZuo
School: PLA Information Engineering University
Course: Military Communication
Keywords: polarization sensitive array non-circular signal electromagnetic vctor sensor tracking of signal
CLC: TN911.23
Type: Master's thesis
Year: 2011
Downloads: 53
Quote: 0
Read: Download Dissertation

Abstract


The elements of polarization sensitive array are composed of many dipoles and loops pointing to different directions. Compared with traditional arrays, it can realize whole polarization receiving of electromagnetic signals, and then have stable and high gain, the research existed has proved the system advantage of this new kind of array.This passage has researched the algorithms of parameters estimation based on this kind of array to improve the algorithms.The main contents are concluded as follows:1. The rapid algorithms based on polarization array are studied. Aiming to solve the four dimension parameters search of polarization MUSIC, an algorithm called polarization-space joint spectrum MUSIC algorithm via metropolis-hastings sampler is presented, compared with original algorithm using traditional searching mode, the computation is effectively reduced while performance is not decreased. Aiming to solve multi-dimension parameters search of polarization WSF, an algorithm called polarization WSF based on differential evolution is presented. The simulations proved that the algorithm presents good performance and has rapid convergence, the success rate is high.2. Parameters estimation algorithms based on non-circular signals are studied. Making use of signals’non-circular character is an important way to impove algorithms’performance. This paper firstly introduces the polarization NC-MUSIC (Non-circular MUSIC) algorithm, then considers the real condition that circular and non-circular signals exist simultaneously, and presents the solvement. Aiming to reduce computation of the algorithm, this paper presents an algorithm called polarization propagator method based on non-circular signals. This algorithm doesn’t need eigenvalue decomposition and then reduce the computation while having the same performance with the polarization NC-MUSIC.3. Parameters estimation based on single electromagnetic vector sensor is studied. The performan of algorithm is bad when the parameters of signal vary with time.This paper introduces an signal tracking algorithm based on electromagnetic vector sensor, aiming to the bad performance of the algorithm for using receiving data directly, presents an signal tracking algorithm based on projection approximation subspace updates, the algorithm doesn’t need eigenvalue decomposition, so the amount of calculation is small. It converges fast and has better performance.

Related Dissertations

  1. Blind PARAFAC-Based DOA and Polarization Estimation Algorithm for Polarization Sensitive Array,TN911.23
  2. Research of Practical Superresolution Algorithm Based on NC-MUSIC Algorithm,TN911.23
  3. Study of Algorithm on DOA Estimation Based on Polarization Sensitive Array,TN911.7
  4. Reach the joint estimation of the angle and polarization parameters based polarization sensitive array of space,TN957.51
  5. Polarization polarization theory and related technology in array signal processing,TN911.7
  6. Study on Multi-Parameter Estimation Based on Polarization Sensitive Array,TN911.23
  7. Polarization sensitive array PARAFAC based blind source separation,TP212.13
  8. Polarization sensitive array multi-parameter joint estimation,TM15
  9. Study on Parameters Estimation of Polarization Sensitive Array Signal,TN911.6
  10. Study on Multi-Parameter Joint Estimation with Polarization Sensitive Array in TDD CDMA Systems,TN911.23
  11. The Research of Technology for Super-Resolution Direction Finding to Coherent Signals,TN974
  12. Two-dimensional DOA Estimation Algorithm Theory of Array Signal and Its Application Research,TN911.72
  13. Cooperative Wireless Mobile Sensors for Target Tracking,TP212.9
  14. Research on Near Field Parameters Estimation Algorithm,TN911.7
  15. Data Research and Analysis on B1Signal of BDS,TN96
  16. The Realization of a Moving Target Tracking System Based on DSP and CPLD,TP277
  17. Research on the Signal Tracking Technology of Optical Wireless Communication,TN929.1
  18. Research on Vision’s Tracking System Based on DSP,TP391.4
  19. Disc player servo technology research,TP333.4
  20. Study on Fabric Guide Line Tracker Based on Position Sensitive Detector,TP212.9

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication theory > Information Theory > Signal detection and estimation
© 2012 www.DissertationTopic.Net  Mobile