一种混沌雷达波形的模糊函数
AMBIGUITY FUNCTIONS OF ONE CERTAIN CHAOTIC RADAR WAVEFORMS
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摘要: 提出了一种基于一维混沌序列的混沌雷达波形。从理论上推导了两种情况下的模糊函数表达式,即(1)连续混沌雷达波形,(2)被截断的混沌序列调制的矩形脉冲雷达波形,并得到数值模拟结果。理论分析和数值模拟结果表明,第一种情形具有理想的图钉形模糊函数;第二种情形具有锋利的刀刃形。这表明该种混沌雷达波形具有较好的距离和速度分辨率。
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关键词:
- 混沌序列; 雷达波形; 模糊函数
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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