一種混沌雷達波形的模糊函數(shù)
AMBIGUITY FUNCTIONS OF ONE CERTAIN CHAOTIC RADAR WAVEFORMS
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摘要: 提出了一種基于一維混沌序列的混沌雷達波形。從理論上推導了兩種情況下的模糊函數(shù)表達式,即(1)連續(xù)混沌雷達波形,(2)被截斷的混沌序列調(diào)制的矩形脈沖雷達波形,并得到數(shù)值模擬結(jié)果。理論分析和數(shù)值模擬結(jié)果表明,第一種情形具有理想的圖釘形模糊函數(shù);第二種情形具有鋒利的刀刃形。這表明該種混沌雷達波形具有較好的距離和速度分辨率。
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關(guān)鍵詞:
- 混沌序列; 雷達波形; 模糊函數(shù)
Abstract: This paper presents one certain chaotic radar waveforms based on one-dimensional chaotic sequences.This paper derives theoretically the formulae of the ambiguity functions of two casess,i.e.,(1) continuous chaotic radar waveforms;(2)rectangular pulsse raaar waveforms modulated by cut-off chaotic sequences.Such theoretical analysis and numerical simulations denote that the ambiguity functions of the first case are shaped by iedal thumbtacks,and those of the second case are shaped by sharp knife edges.These results hint that such chaotic radar waveforms have good range and velocity resolutions. -
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