基于MOF准则的原子钟噪声分离研究  

Research on Atomic Clock Noise-separation Based on MOF Criteria

作　　者：王国成[1] 柳林涛[1] 李忠华[1] 潘峰[2] 

机构地区：[1]中科院测量与地球物理研究所,武汉430077 [2]北京环球信息应用开发中心,北京100094

出　　处：《宇航计测技术》2011年第5期12-14,共3页Journal of Astronautic Metrology and Measurement

摘　　要：按照MOF(the Method of Frame)准则,对原子钟信号进行噪声分离,并应用阿伦方差对基于不同小波字典的噪声分离结果进行评价。试验结果表明,应用余弦(DCT)字典、余弦包(CP)字典、Sym8小波包(WP)字典进行噪声分离后的阿伦方差分别从原始信号的4.5538e-15提高到2.2100e-15,3.3125e-15,8.2848e-16,说明MOF准则下,选取适当的小波字典对原子钟信号进行噪声分离,能够获得很好的稳定度。In this study noise in atomic clock signals is separated according to MOF （the Method of Frame） criteria, and the Allan variance is applied to appraise the noise-separation result attained by dif- ferent wavelet dictionary. It is shown that the Allan variance of the noise-separation results applied DCT dictionary, CP （Cosine Packet） dictionary and WP （Wavelet Packet） dictionary, is improved from the origin of 4. 5538e-15 to 2. 2100e-15,3. 3125e-15 and 8. 2848e-16, respectively. Indicate that during the process of separating the noise in atomic clock signal under MOF criteria, if we can choose appropriate wavelet dictionary, the noise-separation result will be provided with excellent stability.

关 键 词：MOF准则 小波基 阿伦方差 噪声分离 

分 类 号：TM935[电气工程—电力电子与电力传动]