广义的相位测量与处理在时频测控和链接中的应用
发布时间：2018-07-22 13:43
【摘要】：所有的测量系统或者测量设备都存在有限的分辨率的问题,提高测量设备分辨率一直是测量与仪器领域所致力于解决的关键工作。相位测量与处理在时间频率测量领域甚至更加广泛的物理量测量方面一个突出的优势是具有很高的分辨率。传统的相位测量与处理只能在标称值相同的情况下实现并且伴随着复杂的频率变换,应用场合受到限制。本文提出了广义的相位测量和处理方法,详细阐明了周期性信号间的相位关系规律,并且阐述了广义的相位处理和群周期理论的关系,最后将其应用于时频测控和频率链接中,实现了差异很大的频率信号之间的直接的相位或者时间比对,相比传统的比对方法扩大了频率测量的范围,并提高了测量的精度。本文从三个方向详细介绍了广义的相位处理技术在时频测控技术和频率链接中的应用。在高分辨率频率的测量中,应用了模糊区以及模糊区边沿稳定性,并提出了离散模糊区向集中模糊区转换的三种方法,并运用其中一种方法给出了高精度的频率测量方案。在高精度相位差测量中,借助了中介源频率并分析了相位差测量的原理,结合同源同频自校试验和不同源同频的互比试验验证了方案的可行性,测量精度得到了改善。在频率连接技术中,给出了特高频率的测量的原理和试验,以及通过铷原子钟内的频率链接改进方案分析了广义的相位处理技术的应用。总之,以三个应用实例具体介绍了广义的相位处理的作用和使用价值。在三个应用中都实现了频率差异很大的频率信号的直接的相位比对,使得硬件电路省去了混频环节,降低了系统的本地噪声。最后把广义的相位处理概念推广到时频测量领域之外的物理量测量中,以AD转换测量微小电压的实例说明了广义的相位处理的应用前景,并给出了模糊区边沿和测量误差的关系。广义的相位测量和处理给未来高精度的物理量测量提供了一个新的思路。
[Abstract]:All measurement systems or measuring equipment have the problem of limited resolution. Improving the resolution of measuring equipment has always been the key work in the field of measurement and instrument. A prominent advantage of phase measurement and processing in the field of time-frequency measurement is its high resolution. The traditional phase measurement and processing can only be realized in the case of the same nominal value and accompanied by complex frequency conversion, so the applications are limited. In this paper, a generalized phase measurement and processing method is proposed, and the law of phase relationship between periodic signals is expounded in detail. The relationship between generalized phase processing and group period theory is also expounded. Finally, it is applied to time-frequency measurement and control and frequency link. The direct phase or time ratio between different frequency signals is realized. Compared with the traditional comparison method, the range of frequency measurement is enlarged and the accuracy of measurement is improved. In this paper, the application of generalized phase processing technology in time frequency measurement and control technology and frequency link is introduced in detail in three directions. In the measurement of high resolution frequency, the fuzzy region and the stability of the edge of the fuzzy region are applied, and three methods of converting the discrete fuzzy region to the centralized fuzzy region are proposed, and one of the methods is used to give the high precision frequency measurement scheme. In high precision phase difference measurement, the principle of phase difference measurement is analyzed with the aid of the intermediate source frequency. The feasibility of the scheme is verified by combining the homologous frequency self-calibration test and the different homologous frequency cross-ratio test, and the measuring accuracy is improved. In frequency connection technology, the principle and experiment of ultra-high frequency measurement are given, and the application of generalized phase processing technique is analyzed by frequency link improvement scheme in rubidium atomic clock. In a word, the function and use value of generalized phase processing are introduced with three application examples. In the three applications, the direct phase alignment of the frequency signal with great frequency difference is realized, which makes the hardware circuit save the mixing link and reduce the local noise of the system. Finally, the concept of generalized phase processing is extended to physical quantity measurement outside the field of time-frequency measurement. The application prospect of generalized phase processing is illustrated by an example of AD conversion measurement of small voltage. The relationship between the edge of fuzzy region and the measurement error is given. The generalized phase measurement and processing provide a new idea for the high precision physical quantity measurement in the future.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM933.312;TM935.1
本文编号：2137653
[Abstract]:All measurement systems or measuring equipment have the problem of limited resolution. Improving the resolution of measuring equipment has always been the key work in the field of measurement and instrument. A prominent advantage of phase measurement and processing in the field of time-frequency measurement is its high resolution. The traditional phase measurement and processing can only be realized in the case of the same nominal value and accompanied by complex frequency conversion, so the applications are limited. In this paper, a generalized phase measurement and processing method is proposed, and the law of phase relationship between periodic signals is expounded in detail. The relationship between generalized phase processing and group period theory is also expounded. Finally, it is applied to time-frequency measurement and control and frequency link. The direct phase or time ratio between different frequency signals is realized. Compared with the traditional comparison method, the range of frequency measurement is enlarged and the accuracy of measurement is improved. In this paper, the application of generalized phase processing technology in time frequency measurement and control technology and frequency link is introduced in detail in three directions. In the measurement of high resolution frequency, the fuzzy region and the stability of the edge of the fuzzy region are applied, and three methods of converting the discrete fuzzy region to the centralized fuzzy region are proposed, and one of the methods is used to give the high precision frequency measurement scheme. In high precision phase difference measurement, the principle of phase difference measurement is analyzed with the aid of the intermediate source frequency. The feasibility of the scheme is verified by combining the homologous frequency self-calibration test and the different homologous frequency cross-ratio test, and the measuring accuracy is improved. In frequency connection technology, the principle and experiment of ultra-high frequency measurement are given, and the application of generalized phase processing technique is analyzed by frequency link improvement scheme in rubidium atomic clock. In a word, the function and use value of generalized phase processing are introduced with three application examples. In the three applications, the direct phase alignment of the frequency signal with great frequency difference is realized, which makes the hardware circuit save the mixing link and reduce the local noise of the system. Finally, the concept of generalized phase processing is extended to physical quantity measurement outside the field of time-frequency measurement. The application prospect of generalized phase processing is illustrated by an example of AD conversion measurement of small voltage. The relationship between the edge of fuzzy region and the measurement error is given. The generalized phase measurement and processing provide a new idea for the high precision physical quantity measurement in the future.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM933.312;TM935.1
【参考文献】
相关期刊论文 前1条
1 周文水,王海,伏全海,周渭;相检宽带测频仪器的改型[J];计量技术;2004年04期
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