Dissertation > Excellent graduate degree dissertation topics show

Based on high-resolution direction finding passive radar technology research

Author: DongMing
Tutor: SiWeiJian
School: Harbin Engineering University
Course: Communication and Information System
Keywords: Passive direction finding techniques Spatial spectrum estimation Low SNR Small number of snapshots High resolution Modified MUSIC Algorithm
CLC: TN957.51
Type: Master's thesis
Year: 2011
Downloads: 76
Quote: 0
Read: Download Dissertation


Spatial spectrum estimation techniques with high precision angle measurement, angle resolution and strong, without Rayleigh limit restrictions, etc.. In the maritime, aviation, civil, communications, electronic warfare radar, acoustic sonar have a wide range of applications. In today's electronic warfare radar field, especially in the aspect of passive testing, finding the old and new systems simultaneously, the electromagnetic environment is becoming increasingly complex and multi-target radar decoy for finding such circumstances, the spatial spectrum estimation technology research has important significance. This topic combines engineering applications in the context of the passive radar system in the direction finding method to study focuses on the multi-target precision, high-resolution direction finding method. Through the existing spatial spectrum estimation algorithm for analysis and improvement, to achieve improved algorithm in terms of accuracy and resolution performance improvement. First, the introduction to the technique of passive testing phase interferometer technology works, a brief analysis of the technology of the phase ambiguity and angle measurement accuracy and other related issues, and established through mathematical derivation incoherent source than under two-phase system interferometer to measure the dynamic mathematical model, simulation results are given in a non-coherent source than under two-phase interferometer to measure the performance of dynamic proved interferometer technology does not have the ability to distinguish between multiple targets. To this end, the introduction of spatial spectrum estimation to technology, and spectral estimation techniques in the classical MUSIC algorithm as the main object of study, the received signal is given antenna array typical mathematical models, including one-dimensional and three-dimensional space linear array model. Then, for classical algorithm MUSIC algorithm and other related problems in research, through a series of theoretical analysis and derivation of the classical MUSIC algorithm reasonable improvement in order to achieve such resolution direction finding accuracy and performance improvement. Next, in different simulation conditions, through different forms of MUSIC algorithm and improved MUSIC algorithm Matlab simulation analysis and comparison of simulation results show that at low SNR, small number of snapshots and other conditions improved MUSIC algorithm has more superior resolution performance. Finally, with the practical application of engineering signal processing hardware finding system for improving MUSIC algorithm software design processes and hardware schematic are described. And in laboratory conditions, the classical MUSIC algorithm and improved MUSIC algorithm for the actual test, through both analysis and comparison of measured data, further evidence Modified MUSIC Algorithm in resolution performance superiority, provides for the practical application of engineering basis, to meet the expected results.

Related Dissertations

  1. Smart Antenna Algorithms Study,TN821.91
  2. Cloning, Expression and Insecticidal Activity of Novel cry9 Genes from Bacillus Thuringiensis,S476.1
  3. Research and Implementation of Subspace Algorithms,TN911.7
  4. Sedimentary Characterization of Shanshan Oil Fields Qiketai Formation,P512.2
  5. Research on Improving the Direction Finding Accuracy of Radio in Improve the Radio for the Accuracy of Research,TN98
  6. A Study on the Tectonic Deformation of the Kalpin Thrust Tectonic System Based on High-resolution Satellite Images,P542
  7. Research on High-Efficient Spatial Spectrum Estimation Algorithm,TN911.7
  8. Study of Altitude Measurement in VHF Radar,TN958
  9. Research and Implementation of Sound Localization Algorithms,TN912.3
  10. Study on Key Technology of Super-resolution Direction-of-arrival Estimation,TN911.23
  11. Beamforming based noise source identification and visualization of the sound field,TB534.1
  12. High-Resolution Image Classificationi Based on Urban Application,TP391.41
  13. Study on Broad-Band Spatial Spectrum Estimation Methods at Subarray Level,TN911.23
  14. Based on high-resolution remote sensing data mining houses information extraction,TP751
  15. Processing and Analysis of X-ray Real-time Image Based on High-resolution CCD Camera,TP391.41
  16. Blank area west of the country 1:50000 DLG production and Key Technologies,P208
  17. The Relationship Between TNF, PDE8B, TSHR Gene Polymorphism and Endemic Goiter of 8-10 Year-old Children,R725.8
  18. Comprehensive Imaging Study of Early Peripheral Lung Cancer,R734.2
  19. Based on maize expressed sequence tag single nucleotide polymorphism marker development,S513
  20. Analysis of High-Resolution Sequence Stratigraphy of Shallow-water Deltas in Interval 8 of Yanchang Formation, Jiyuan Area of Ordos Basin,P618.13

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radar > Radar equipment,radar > Radar receiving equipment > Radar signal detection and processing
© 2012 www.DissertationTopic.Net  Mobile