Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)
- Volume 8 Issue 4 Serial No. 23
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- Pages.102-109
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- 2005
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- 1598-9127(pISSN)
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- 2636-0640(eISSN)
The Listen-in Technique for Blind Signals
블라인드 신호 감청기술
- Nah, Sun-Phil (ADD) ;
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Park, Cheol-Sun
(ADD) ;
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Jang, Won
(ADD)
- Published : 2005.12.30
Abstract
In this paper, we propose a new listen-in technique to overcome the problems and the shortcomings which could possibly meet in the previous listen-in methods to deal with the blind signal manually according to operator's decision. In the proposed listen-in method, receiving the signals, classifying the modulation types, and demodulating the signals can be done automatically without operator's intervention. We realize the listen-in technology by developing the high speed frequency tuner, the automatic modulation recognizer, and the signal demodulator. In conclusion, we confirm and show that the developed equipment has a good performance in classifying the modulation type through the computer simulation and the field test.
Keywords
- Signal Tuning;
- Automatic Modulation Recognition;
- Signal Demodulator;
- Phase Locked Loop;
- Direct Digital Frequency Synthesis;
- Intermediate Frequency;
- Digital Downconverter