CAJ | 학술논문

目前普遍应用Duffing混沌振子系统检测噪声背景下微弱信号，由于其具有对周期信号敏感而对干扰信号免疫的特点，所以在检测时常常忽略噪声的影响。然而大量实验发现，系统对某些方差的噪声免疫力很低，容易造成误判。由此，在分析噪声对微弱信号检测影响的基础上，采用互相关检测器对待测信号进行处理，以此抑制噪声。对工程上不易实现的混沌阵列检测法引入实用性强的循环算法，操作简单，仿真结果精度高。
목전보편응용Duffing혼돈진자계통검측조성배경하미약신호，유우기구유대주기신호민감이대간우신호면역적특점，소이재검측시상상홀략조성적영향。연이대량실험발현，계통대모사방차적조성면역력흔저，용역조성오판。유차，재분석조성대미약신호검측영향적기출상，채용호상관검측기대대측신호진행처리，이차억제조성。대공정상불역실현적혼돈진렬검측법인입실용성강적순배산법，조작간단，방진결과정도고。
Currently, the method of Duffing chaotic oscillator system is widely used in detection of weak signals in noise background. In this method, the noise effect is usually ignored in the detection because the Duffing chaotic oscillator system is sensitive to periodical signal and inert to noise. However, it was found through a large number of experiments that this chaotic system has low noise immunity for the noises with some square-root difference, which will make mistake in signal detection. In this paper, the affect of the noise on weak signal detection was analyzed. The cross-correlation detection system, which can suppress the noise, was used to process the signal. Also, the cyclic algorithm was introduced to the chaotic array detection. This method is simple and easy to handle, and the simulation results have high accuracy.