Dissertation > Excellent graduate degree dissertation topics show

Research on the Coherence and Countermeasure of Wideband DRFM

Author: LiuTianPeng
Tutor: WeiZuoZhang
School: National University of Defense Science and Technology
Course: Information and Communication Engineering
Keywords: Wideband radar DRFM Deception jamming Coherent sexual Phase quantization Frequency agility
CLC: TN974
Type: Master's thesis
Year: 2010
Downloads: 129
Quote: 1
Read: Download Dissertation

Abstract


The broadband radar deception jamming is one of the broadband radar electronic interference ( ECM ) , digital radio frequency memory ( DRFM ) is widely used in the store and forward the characteristics of its coherent deception jamming system . How to improve the fidelity of the false target , and how to fight against wideband radar deception jamming radar against a hot issue in this paper to address the problem from the following aspects . First , the combination of the the ISAR the Turntable imaging model , research -based solution line frequency tone processing ISAR imaging principle ; introduced the DRFM quantitative and implementation structure ; On this basis , research based the DRFM broadband radar deception jamming system structure and interference signal form . Secondly, the study of the local oscillator frequency drift , the sampling clock frequency drift , and the quantization error on the coherent properties of the interference signal to derive a phase error generated by the system factors , and attributed to the I and Q channel phase inconsistencies ; Analysis of the I Q channel amplitude and phase inconsistencies mirror frequency component . I and Q channel amplitude and phase inconsistent the LFM signal pulse pressure waveform main lobe peak reduction signal-to-noise ratio , sidelobe level was significantly higher conclusion derived by simulation experiments . Again , is derived based on the phase quantization the DRFM of interference signal spectrum , as well as joint quantify the interference signal delay and phase spectrum , pointed out that the the DRFM signal quantization processing makes the signal spectrum characteristics change ; simulation results show that the phase quantization DRFM output signal spectrum false lines , selection of the number of bits DRFM 4 or more can effectively reduce the impact . Finally, for wideband radar against fraudulent jamming problems , based on the inter - pulse frequency agility SAR anti-jamming technology ; broadband frequency agile radar imaging , compression algorithm based on the time domain orientation and orientation based on compressed sensing compression algorithm, simulation results demonstrate the effectiveness of the two algorithms . In this paper , through the study of the problem , get some stage of conclusion , broadband radar anti - deception jamming problems provides a reference to improve the fidelity of a false target .

Related Dissertations

  1. Based on the voltage control mode of a millimeter wave magnetron tuning,TN123
  2. Two kinds of wideband radar SAR imaging method and test applications,TN958
  3. Radar-based features of the micro- phase ranging access to research,TN958
  4. Digital wideband radar signal generation technology research,TN957.51
  5. Research of Ultra-wideband Radar Signal Processing Based on Wavelet Theory,TN957.51
  6. Design and Application of the Airborne Jamming Pod Interference Simulator,TN974
  7. X Band Radar Frequency Source Technology Research,TN957.51
  8. Research on Key Technology of Broadband Radar,TN957.51
  9. Research and Realization of Radar Active Deceive Jamming Signal Detection System,TN974
  10. Bistatic SAR interference technology research,TN974
  11. FPGA-based radar active jamming technology research,TN974
  12. Design and Implementation of A 2.4GHz Communication Module for Wireless Sensor Network Node,TN929.5
  13. Research on ISAR Deception Jamming Methos,TN874
  14. Research on Jamming Technology to Multiple Radar Signals Simultaneously Based on Digital Radio Frequency Memory,TN972
  15. The Research of Doopler Frequency Shift Interference in Electronic Countermeasure of Sensor Nets,TN974
  16. Simulation and Statistical Characteristics Analysis of Clutter for Space-borne Radar,TN955
  17. Wideband radar echo detection of LFM Signals,TN957.51
  18. Bistatic SAR interference technology research,TN958
  19. The radar active jamming technology research,TN974
  20. Portable radar signal processor design and implementation,TN957.51

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Electronic warfare ( jamming and anti - jamming ) > Radar electronic countermeasures
© 2012 www.DissertationTopic.Net  Mobile