基于多重耦合降噪的混沌测量研究

Study of Chaotic Measurement Based on Noise Reduction by Multi-Coupling

混沌测量系统对噪声的敏感性很高,为了增强其抗噪声干扰的能力,提高系统的测量精度,该文提出对混沌测量电路进行多重耦合.从理论上推导了该方法的可行性,并且通过实验进一步从序列符号距离和线性度两方面进行比较,结果表明经过多重耦合的混沌测量电路,与未耦合以及相邻耦合的测量系统相比,具有更强的噪声抑制能力.因此在耦合测量系统中,系统耦合强度与其噪声抑制能力成正比,在相同个数测量电路参与耦合的情况下,本文所提出的多重耦合方式可以使测量系统得到较优的测量精度及稳定性.

Chaotic system is highly sensitive to noise. So in order to strengthen its noise reduction ability and improve measurement precision, a system composed of multi-coupling chaotic measurement circuits is proposed, which is validated theoretically. Further experiment also shows that multi-coupling circuits have a better noise reduction performance both in symbol distance and linearity, compared with the single one and side coupling ones. The result shows that system＇s coupling strength is in direct proportion to its noise reduction ability, and multi-coupling is more precise and robust than the other coupling methods while the same number circuits joining in the coupling.