【摘要】：所有的測量系統(tǒng)或者測量設備都存在有限的分辨率的問題,提高測量設備分辨率一直是測量與儀器領域所致力于解決的關鍵工作。相位測量與處理在時間頻率測量領域甚至更加廣泛的物理量測量方面一個突出的優(yōu)勢是具有很高的分辨率。傳統(tǒng)的相位測量與處理只能在標稱值相同的情況下實現(xiàn)并且伴隨著復雜的頻率變換,應用場合受到限制。本文提出了廣義的相位測量和處理方法,詳細闡明了周期性信號間的相位關系規(guī)律,并且闡述了廣義的相位處理和群周期理論的關系,最后將其應用于時頻測控和頻率鏈接中,實現(xiàn)了差異很大的頻率信號之間的直接的相位或者時間比對,相比傳統(tǒng)的比對方法擴大了頻率測量的范圍,并提高了測量的精度。本文從三個方向詳細介紹了廣義的相位處理技術在時頻測控技術和頻率鏈接中的應用。在高分辨率頻率的測量中,應用了模糊區(qū)以及模糊區(qū)邊沿穩(wěn)定性,并提出了離散模糊區(qū)向集中模糊區(qū)轉換的三種方法,并運用其中一種方法給出了高精度的頻率測量方案。在高精度相位差測量中,借助了中介源頻率并分析了相位差測量的原理,結合同源同頻自校試驗和不同源同頻的互比試驗驗證了方案的可行性,測量精度得到了改善。在頻率連接技術中,給出了特高頻率的測量的原理和試驗,以及通過銣原子鐘內(nèi)的頻率鏈接改進方案分析了廣義的相位處理技術的應用�？傊�,以三個應用實例具體介紹了廣義的相位處理的作用和使用價值。在三個應用中都實現(xiàn)了頻率差異很大的頻率信號的直接的相位比對,使得硬件電路省去了混頻環(huán)節(jié),降低了系統(tǒng)的本地噪聲。最后把廣義的相位處理概念推廣到時頻測量領域之外的物理量測量中,以AD轉換測量微小電壓的實例說明了廣義的相位處理的應用前景,并給出了模糊區(qū)邊沿和測量誤差的關系。廣義的相位測量和處理給未來高精度的物理量測量提供了一個新的思路。
[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.
【學位授予單位】：西安電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM933.312;TM935.1

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本文編號：2137653