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从瞬态到全域稳定度的测量方法进步
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作者 白丽娜 王一妃 +2 位作者 周渭 黄李贝 王远 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2019年第3期8-13,共6页
将边沿效应推广到数字领域,利用数字边沿结合数字鉴相算法得到瞬态频率稳定度,将瞬态稳定度从10-4每百纳秒提高到10-5每百纳秒,解决了模拟相位重合检测技术存在的对硬件线路要求过高、设备漂移、无法扩展到全域稳定度等问题。数字方式... 将边沿效应推广到数字领域,利用数字边沿结合数字鉴相算法得到瞬态频率稳定度,将瞬态稳定度从10-4每百纳秒提高到10-5每百纳秒,解决了模拟相位重合检测技术存在的对硬件线路要求过高、设备漂移、无法扩展到全域稳定度等问题。数字方式可在瞬态稳定度的基础上扩展到短期及中、长期稳定度,从根源和影响效果等方面对频率源相位噪声进行更全面的描述。 展开更多
关键词 瞬态稳定度 相位重合检测 数字边沿效应
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ADC border effect and suppression of quantization error in the digital dynamic measurement 被引量:3
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作者 白丽娜 刘海东 +7 位作者 周渭 张勇 翟鸿启 崔震健 赵明英 谷小倩 刘蓓玲 黄李贝 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第9期91-97,共7页
The digital measurement and processing is an important direction in the measurement and control field. The quantization error widely existing in the digital processing is always the decisive factor that restricts the ... The digital measurement and processing is an important direction in the measurement and control field. The quantization error widely existing in the digital processing is always the decisive factor that restricts the development and applications of the digital technology. In this paper, we find that the stability of the digital quantization system is obviously better than the quantization resolution. The application of a border effect in the digital quantization can greatly improve the accuracy of digital processing. Its effective precision has nothing to do with the number of quantization bits, which is only related to the stability of the quantization system. The high precision measurement results obtained in the low level quantization system with high sampling rate have an important application value for the progress in the digital measurement and processing field. 展开更多
关键词 quantization error border effect digital converter(ADC)
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