摘要
根据原子钟信号噪声的特点,引入了小波分析的处理方法,并给出了小波分析函数的数学模型和滤波器构建方法。利用该方法对卫星钟的钟差数据进行分析,并利用allan方差对处理结果进行评估,结果显示小波分析方法有效地减弱了原子钟信号噪声,原子钟的频率稳定度得到了明显提高。
This article induced wavelet analysis method with the model function of wavelet and the construction of filter by analyzing the characteristic of noise of satellite clocks. The clock offset data was analyzed using the wavelet method and the results were evaluated through Allan deviation. It shows that wavelet method effectively restrains the noise of signals and the frequency stability is improved obviously.
出处
《测绘》
2009年第3期115-118,共4页
Surveying and Mapping
关键词
噪声处理
小波分析
ALLAN方差
卫星钟
Noise processing
Wavelet analysis
Allan deviation
Satellite clocks
