混沌相位調(diào)制雷達信號的模糊函數(shù)
AMBIGUITY FUNCTION OF CHAOTIC PHASE MODULATED RADAR SIGNALS
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摘要: 本文研究了一類混沌編碼信號,利用混沌信號進行雷達信號的相位編碼,并且計算了這類編碼信號的模糊函數(shù)。理論和仿真結(jié)果表明,混沌編碼信號的模糊函數(shù)十分逼近理想的圖釘型,信號具有很高的時延和多普勒分辨力,揭示了混沌用于雷達信號處理的可能性和優(yōu)越性。
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關(guān)鍵詞:
- 混沌; 模糊函數(shù); 相位編碼
Abstract: This paper analyzes a kind of chaotic modulation signals,the phase-modulated radar signals are generated by chaotic signals,at the same time the ambiguity function of the coded signals is given.Theory and simulation results show that the ambiguity function of chaotic modulated signals is approximatly thumbtack-shapeas the ideal results,thus the signal has high resolution both in time-delay domain and Doppler frequency domain.It implies the possibility and advantages for chaos to be used in radar signal processing. -
Leung H Applying chaos to radar detection in an ocean cnvironment：An experimental study.IEEE J[J].Oceanic Engineering.1995,20(1):56-64[2]Haykin S,et al Derection of signals in chaos Proc IEEE,1995，83(1)：94-122.[3]Schuster H G Deterministic Chaos,An Introduction(Second Revised Edition)．Federal Republic of Germany,VCH，1988,ch2[4]Chua L O，et al Generating randomness from chaos and constructing chaos with desired ran domness．Int．J Circuit and Applications,1990，18(3)：215-240．[5]林茂庸，等，雷達信號理論．北京：國防工業(yè)出版社，1984，第七章. -
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