科研之友
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摘要
In this paper, we present a new scheme for the realization of a wide-band chaotic RADAR system. The remarkable characteristics of such scheme are: ( 1) Wide-band chaotic signal generated from microwave chaotic Colpitts oscillator is directly used as the RADAR signal; ( 2) Chaos synchronization is used to recover the chaotic signal from the back-scattered signal by targets; ( 3) The intrinsic sensitivities of the chaotic signal to the parameters of the chaotic circuit and to the initial conditions are used to realize the "multi-user" property. System simulations show that such RADAR can still work in an environment when the signal-to-noise ratio (SNR) is lower than -20 dB.
- 出版日期2007
- 单位西安空间无线电技术研究所; 浙江大学; 浙江大学城市学院
