Dissertation > Excellent graduate degree dissertation topics show

Research passive measurement techniques to estimate DOA

Author: WangZuo
Tutor: FangHongBing；WangShouFeng
School: Nanjing University of Technology and Engineering
Course: Optical Engineering
Keywords: passive direction-finding direction of arrival correlation interferometer array signal process spatial spectrum estimation
CLC: TN820
Type: Master's thesis
Year: 2012
Downloads: 96
Quote: 0
Read: Download Dissertation

Abstract


Passive direction-finding technology based on array antenna has achieved quick development in last half century. And now the technology is extensively applied in both military field and civil filed. Moreover, the estimation of DOA (direction of arrival) is the core technology of passive direction-finding.This essay carried out deep discussion and study on technology of DOA estimation based on passive direction-finding and problems needed to be solved in actual application. And it mainly studied key algorithm of correlation interferometer and spatial spectrum estimation. Below are the main contents of this study:1. Studied on traditional phase interferometer and correlation interferometer direction-finding technology, analyzed the problem of blurring when applying traditional phase interferometer, and find out that applying correlation interferometer can solve the problem.2. Put forward the concept of two-level correlation algorithm based on correlation interferometer direction-finding algorithm, which can largely reduce the time of direction-finding; and put forward curved fitting algorithm targeted at correlation direction-finding data, which can effectively improve the precision of direction-finding.3. Carried out a systematic research on spatial spectrum, discussed and emulated the classic MUSIC algorithm; studied on spatial smoothing algorithm according to coherent signal in actual application.4. Did research on uniform circular array’s coherent signal DOA estimation for the spatial smoothing algorithm can only be applied to uniform array, which means creating virtual array to satisfy the condition of spatial smoothing algorithm. Finally, the essay also studied the maximum likelihood method.

Related Dissertations

  1. Design and implementation of VHF direction finding equipment terminal handling,TP274.5
  2. A Research of Sonar Target Glint,U666.7
  3. The Research on Underwater-object-detect Array and DOA Estimation,TB566
  4. Geometric Algebra antenna array signal vector model and its application,TN820.15
  5. Research on Direction Finding Algorithms of Non-circular Signals and Its DSP Realization,TN911.7
  6. Joint Detection and Estimation of Wideband Signals Based on MCMC Methods,TN911.72
  7. Performance Analysis of Typical Spatial Spectrum Algorithms,TN911.72
  8. Research and Implementation of Subspace Algorithms,TN911.7
  9. The Fast Method for DOA Estimation of Wideband Signals and Its Implementation on DSP,TN911.7
  10. Some Researches on Direction-of-Arrival Estimation,TN911.23
  11. Research on Improving the Direction Finding Accuracy of Radio in Improve the Radio for the Accuracy of Research,TN98
  12. Study on Data Fusion Technology of Spatial Signal Processing Methods,U666.7
  13. Research on Directon Finding Techniques Based on MUSIC Algorithm,TN974
  14. Research on High-Efficient Spatial Spectrum Estimation Algorithm,TN911.7
  15. Research on Ultar-Wide Band Antenna for Passive Direction-Finding,TN822.8
  16. Based on high-resolution direction finding passive radar technology research,TN957.51
  17. Research on the System of Double Channel Corrective Interferometer Direction Finder,TH744.3
  18. Study on Passive Direction Finding Techniques with High Precision,TN953
  19. Study on Source Localization via Signal Representation Using Over-Complete Bases,TN911.6
  20. Research on the Technologies of Fragment Velocity Parameter Measurement Based on Millimeter-wave Array Radar,TJ06
  21. Nonuniform Sampling Based Super Resolution Direction of Arrival Estimation,TN911.7

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > General issues
© 2012 www.DissertationTopic.Net  Mobile