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Concept for low-cost chaos radar using coherent reception

机译:使用相干接收的低成本混沌雷达的概念

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We describe a new approach to random-signal radar based on the recent discovery of analytically solvable chaotic oscillators. These surprising nonlinear systems generate random, aperiodic waveforms that offer an exact analytic representation, allowing the implementation of simple matched filters and coherent reception. Notably, this approach enables nearly optimal detection of noise-like waveforms without need for expensive variable delay lines to store wideband waveforms for correlation. Mathematically, the waveform is expressed as a linear convolution of a bit sequence with a fixed basis function. We realize a simple matched filter for the waveform using a linear filter whose impulse response function is the time reverse of the basis function. Importantly, linear filters matched to finite bit sequences can be defined, enabling pulse compression and spread spectrum radar. We present an example oscillator, its matched filter, and simulation results demonstrating the pulse compression radar concept.
机译:我们基于解析可解混沌振荡器的最新发现描述了一种新的随机信号雷达方法。这些令人惊讶的非线性系统会生成随机的非周期性波形,这些波形可提供精确的解析表示,从而可以实现简单的匹配滤波器和相干接收。值得注意的是,这种方法能够几乎最佳地检测类似噪声的波形,而无需昂贵的可变延迟线来存储宽带波形以进行相关。在数学上,波形表示为具有固定基函数的位序列的线性卷积。我们使用线性滤波器实现了一个简单的波形匹配滤波器,该滤波器的脉冲响应函数是基函数的时间倒数。重要的是,可以定义与有限位序列匹配的线性滤波器,从而实现脉冲压缩和扩频雷达。我们以振荡器,匹配滤波器和仿真结果为例,演示了脉冲压缩雷达的概念。

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