Dissertation > Excellent graduate degree dissertation topics show

Characteristic Acquiring and Analyzing of Underwater Transient Signal

Author: LvChengGang
Tutor: LiSiChun
School: Harbin Engineering University
Course: Underwater Acoustics
Keywords: Empty invested in water HHT Feature Extraction FARTMAP Target classification
CLC: TN911.6
Type: Master's thesis
Year: 2009
Downloads: 183
Quote: 3
Read: Download Dissertation

Abstract


Torpedo the empty inputs such as water, underwater transient signals into the water target classification , for the torpedo early warning has important significance . Extremely complex underwater background noise , as well as transient signal generation involves a very complex set of factors , the field has become a difficult and hot water sound research . The focus of this paper is to analyze and classify research into the water target object empty into the characteristics of the underwater acoustic torpedoes . This paper describes the torpedo objects such as empty physical processes put into water , and analyzed signal composed into the water - splashing into the water pulse signal and vacuolar volume pulsation signal and its characteristics . Into the water signal is a non- stationary signals , so the main theory suitable for the analysis of non- stationary signals - the Hilbert - Huang transform ( Hilbert 's - Huang, Transform referred HHT) to handle HHT theory in the frequency domain and time domain can also get many of the advantages of the high-resolution . This paper analyzes the connotation of the theory of HHT and its simulation study , the text in the theory and the Wavelet Transform contrast , HHT handle null input the water transient signals smaller wavelet transform has certain advantages . According to the characteristics of the water signal , splashing into the water pulse signal detection is of great significance for the early discovery of the aerial torpedo This article studies the energy method , higher-order statistics splashing into the performance of the pulse signal detection : HHT theory applied to the vacuolar volume pulsation signal the vacuolar volume pulsating signal processing the Hilbert spectral characteristics , anechoic water tank the experimental and Songhuahu experiment experimental data processing . Fuzzy adaptive resonance mapping (Fuzzy Adaptive Resonance Theory Mapping, the referred FARTMAP) neural network is the network stability and plasticity . At the end of this article described its principles and neural network structure and its simulation study , while the neural network introduce air into the water target classification study it handled Songhuahu experimental data to study the different parameters put into water -to-air target classification problem .

Related Dissertations

  1. Research on Automatic Detection Algorithm for Substructure Distress of Highway Pavement Based on SVM,U418.6
  2. ISAR Imaging Simulation of Space Targets and Target Recognition Based on ISAR Images,TN957.52
  3. Research on Feature Extraction and Classification of Pulse Waveform for Cholecystitis and Nephrotic Syndrome Diagnosis,TP391.41
  4. Application of Q-Learning in the Content-Based Image Retrieval Technology,TP391.41
  5. Research on Transductive Support Vector Machine and Its Application in Image Retrieval,TP391.41
  6. Research on Feature Extraction and Classification of Tongue Shape and Tooth-Marked Tongue in TCM Tongue Diagnosis,TP391.41
  7. Research on Visual Measurement for Spacecraft Rendezvous and Approach,TP391.41
  8. Research on the Image Real-Time Acquisition, Storage and Image Processing System,TP391.41
  9. Feature Extraction, Selection and Combination in Lipreading,TP391.41
  10. Multi-currency Notes Technology Research and Implementation,TP391.41
  11. The Research on Paper Currency Classification Method Based on Harr-Like Feature and Minimal Ball Including Samples,TP391.41
  12. Pavement Distress Recognition Based on Image,TP391.41
  13. Research on Visual Detection and Tracking of Mobile Robots,TP242.62
  14. Research on Fusion Algorithm of Hyper Spectral and High Spatial Resolution Remote Sensing Image,TP751
  15. Research on Target Tracking and System in Wireless Sensor Networks Based on Character of Movement and Terrain Restriction,TP212.9
  16. An Approach for Identifying a Plant Resistance Gene Based on the Random Forest,Q943
  17. Over-voltage Identification of Transmission Line Based on Hilbert-Huang Transformation,TM866
  18. Tobacco Diseases Auto-Recognition Research Based on Image Processing Technology,S435.72
  19. Research on Nondestructive Detection Technology for External Qualities of Papayas Based-on Vision,S667.9
  20. Research on Identification System of Cashmere and Wool Fiber,TS101.921
  21. Research for Infrared Image Target Identification and Tracking Technology,TP391.41

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication theory > Signal analysis
© 2012 www.DissertationTopic.Net  Mobile