Dissertation > Excellent graduate degree dissertation topics show

Anti-Jam Technique Research for GPS

Author: HuJia
Tutor: HuangXiZuo
School: Chongqing University
Course: Detection Technology and Automation
Keywords: GPS jam anti-jam technique LNA design STAP STF
CLC: P228.4
Type: Master's thesis
Year: 2006
Downloads: 134
Quote: 0
Read: Download Dissertation

Abstract


During the local area wars in rencent years, GPS was given more and more attention. It has been a new and critical area in the modern war. Even in the civilian area,it also shows great potential. Today, EU makes every effort to develop Galileo navigation system,and hopes to be a main role in the future GNSS. China also successfully launched two Beidou experimenntal navigation satellites. Adding the GLONASS of Russia, all these make topics on GPS attract great interest. At the same time the vulnerability of GPS and GNSS to that interference is becoming visible. The research on GPS jam and anti jam field is just beginning in China. So it is very significant to design anti-jam RF circuit, to build anti-jam model and to build evaluation system for GPS anti-jam. The work in this pacer is as below:This princeple of the GPS receiver and some interference characters analyse is introduced in this paper. Based on this, the total solution for GPS anti-jam is given in this paper. In the paper, we have designed the RF circuit and induce the technique of RF filter which can mitigate out of band interference. For another receiver with multiple antennas, We also give the Space-time adaptive signal processing algorithm and build the model of based on STF. In the model, the narrowband jammers are modeled as vector autoregressive (VAR) processes and rejected by temporal whitening. The spatial nulling is implicitly achieved by estimating a sample covariance matrix and feeding its inverse into the strong trackingn filter (STF). Computer simulations demonstrate robust performance of the algorithm in severe jamming. In addition, We build the experiments platform in order to Measured Effects of a Narrowband Interference Suppressor on GPS Receivers with a single antenna. The solution evaluate the performance of GPS receiver with/without Narrowband Interference Suppressor. The result shows the Narrow Interference Suppressor can mitigate narrow interference to GPS.

Related Dissertations

  1. Research and Realization on Synchronization Technology of High Sensitivity GNSS Software Receiver,P228.4
  2. Study on Attitude Determination Method of Distributed Moving Warship OTHR System,P228.4
  3. Preparation and Performance of Molecular Imprinted Polymers for Rhodamine-B and Rhodamine-6G,O631.3
  4. The Research of Navigation Multi-Sensor Data Fusion Technology Based on Micro Unmanned Platform,V249.32
  5. Algorithm Research on SINS/GPS Integrated Navigation Syste,V249.328
  6. Study on the Locomotive Dynamic Supervision System,U284.48
  7. Research on Techniques of Information Acquisition and Location in Pavement Roughness Inspection,U416.2
  8. Research of Image Guided Technology for Cable Tunnel Patrol Vehicle,U469.6
  9. Analysis of the narrative mode of the Yunnan Ethnic Movies and TV,J905
  10. Research and Improvement of Multi-Level Modulation Self-Adaptive Digital Predistortion Algorithm,TN722.75
  11. Study on System of Electronic Documetnt Security Signature,TN918.2
  12. Research on Removal Algorithm of Shadows in Image Segmentation,TP391.41
  13. The Application of Fuzzy Control and Neural Network in Planar Double Inverted Pendulum,TP273.4
  14. Design of LXI 1553B Bus Communication Module,TP273
  15. Study on Integrated Prevention Measures of Bursaphelenchus Xylophilus in Xikou Senic Spot of Fenghua,S763.3
  16. Research on the Constructions of Several Classes of Sequence Based on Interleaving Techniques,TN911
  17. Preparation of the Crop Stalk-Based Shaped Activated Carbons and Fibreboard,X712
  18. Cryopreservation and Damage Research of Sperm of Cobia (Rachycentron Canadum) and Crimson Snapper (Lutjanus Erythopterus),S961.2
  19. Influence of Nitrate Concentrations on the Production of N2, N2O, NO, and CO2 by Soil Cores During Anaerobic Incubation,X131.3
  20. Primary Study on Measurement of Ammonia Emissions from a Farm Using Tunable Diode Laser Absorption Spectroscopic Technology,S158.5

CLC: > Astronomy,Earth Sciences > Surveying and Mapping > Geodesy > Satellite geodesy and space geodesy > Global Positioning System (GPS)
© 2012 www.DissertationTopic.Net  Mobile