【摘要】：所有的測(cè)量系統(tǒng)或者測(cè)量設(shè)備都存在有限的分辨率的問(wèn)題,提高測(cè)量設(shè)備分辨率一直是測(cè)量與儀器領(lǐng)域所致力于解決的關(guān)鍵工作。相位測(cè)量與處理在時(shí)間頻率測(cè)量領(lǐng)域甚至更加廣泛的物理量測(cè)量方面一個(gè)突出的優(yōu)勢(shì)是具有很高的分辨率。傳統(tǒng)的相位測(cè)量與處理只能在標(biāo)稱(chēng)值相同的情況下實(shí)現(xiàn)并且伴隨著復(fù)雜的頻率變換,應(yīng)用場(chǎng)合受到限制。本文提出了廣義的相位測(cè)量和處理方法,詳細(xì)闡明了周期性信號(hào)間的相位關(guān)系規(guī)律,并且闡述了廣義的相位處理和群周期理論的關(guān)系,最后將其應(yīng)用于時(shí)頻測(cè)控和頻率鏈接中,實(shí)現(xiàn)了差異很大的頻率信號(hào)之間的直接的相位或者時(shí)間比對(duì),相比傳統(tǒng)的比對(duì)方法擴(kuò)大了頻率測(cè)量的范圍,并提高了測(cè)量的精度。本文從三個(gè)方向詳細(xì)介紹了廣義的相位處理技術(shù)在時(shí)頻測(cè)控技術(shù)和頻率鏈接中的應(yīng)用。在高分辨率頻率的測(cè)量中,應(yīng)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(zhuǎn)換的三種方法,并運(yùn)用其中一種方法給出了高精度的頻率測(cè)量方案。在高精度相位差測(cè)量中,借助了中介源頻率并分析了相位差測(cè)量的原理,結(jié)合同源同頻自校試驗(yàn)和不同源同頻的互比試驗(yàn)驗(yàn)證了方案的可行性,測(cè)量精度得到了改善。在頻率連接技術(shù)中,給出了特高頻率的測(cè)量的原理和試驗(yàn),以及通過(guò)銣原子鐘內(nèi)的頻率鏈接改進(jìn)方案分析了廣義的相位處理技術(shù)的應(yīng)用�？傊�,以三個(gè)應(yīng)用實(shí)例具體介紹了廣義的相位處理的作用和使用價(jià)值。在三個(gè)應(yīng)用中都實(shí)現(xiàn)了頻率差異很大的頻率信號(hào)的直接的相位比對(duì),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(shí)頻測(cè)量領(lǐng)域之外的物理量測(cè)量中,以AD轉(zhuǎn)換測(cè)量微小電壓的實(shí)例說(shuō)明了廣義的相位處理的應(yīng)用前景,并給出了模糊區(qū)邊沿和測(cè)量誤差的關(guān)系。廣義的相位測(cè)量和處理給未來(lái)高精度的物理量測(cè)量提供了一個(gè)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(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM933.312;TM935.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 周文水,王海,伏全海,周渭;相檢寬帶測(cè)頻儀器的改型[J];計(jì)量技術(shù);2004年04期

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本文編號(hào)：2137653