發(fā)布時(shí)間：2018-02-28 09:07

  本文關(guān)鍵詞： 頻率處理 DDS 群相位 相位差測(cè)量　出處：《西安電子科技大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：本論文作為基礎(chǔ)性研究,根據(jù)我國(guó)導(dǎo)航衛(wèi)星時(shí)頻生成與保持技術(shù)的要求,利用DDS將星載原子鐘輸出的10MHz信號(hào)經(jīng)過(guò)頻率處理產(chǎn)生高頻率穩(wěn)定度、高分辨率、低相位噪聲的基準(zhǔn)10.23MHz時(shí)頻信號(hào)。對(duì)于主備鐘信號(hào)的相位差測(cè)量,本文根據(jù)群相位同步的概念,通過(guò)參考頻率信號(hào)和被測(cè)頻率信號(hào)之間相位重合檢測(cè)構(gòu)成測(cè)量閘門的方法消除了通常計(jì)數(shù)測(cè)量方法中存在的士1計(jì)數(shù)誤差,測(cè)量分辨率能夠大幅提高。通過(guò)實(shí)驗(yàn)表明,該方法寬范圍的測(cè)量分辨率可達(dá)5×10-11/s,滿足低成本、寬范圍的應(yīng)用需求。 該基準(zhǔn)頻率處理技術(shù)可以根據(jù)記錄下衛(wèi)星星載鐘的漂移數(shù)據(jù),如根據(jù)溫度—頻率變化數(shù)據(jù)算出調(diào)整信號(hào),控制DDS保證基準(zhǔn)頻率信號(hào)的穩(wěn)定度。由于成本低,靈活,信號(hào)處理范圍寬,因此可以廣泛運(yùn)用于一些高精密儀器的設(shè)計(jì),填補(bǔ)我國(guó)高精密儀器設(shè)計(jì)的空白,產(chǎn)生可觀的社會(huì)和經(jīng)濟(jì)效益。
[Abstract]:As a basic research, according to the requirement of time frequency generation and maintenance technology of navigation satellite in China, this paper uses DDS to process the 10MHz signal of spaceborne atomic clock through frequency processing to produce high frequency stability and high resolution. Low-phase noise reference 10.23MHz time-frequency signal. For the phase difference measurement of the master and backup clock signal, according to the concept of group phase synchronization, By detecting the phase coincidence between the reference frequency signal and the measured frequency signal, the method of detecting the phase coincidence between the reference frequency signal and the measured frequency signal to form the measuring gate eliminates the taxi 1 counting error in the usual counting measurement method, and the measurement resolution can be greatly improved. The wide range resolution of the method can reach 5 脳 10 ~ (-11) / s, which can meet the requirements of low cost and wide range of applications. The reference frequency processing technique can calculate the adjusted signal according to the satellite satellite clock drift data recorded, such as the temperature-frequency change data, and control the DDS to ensure the stability of the reference frequency signal. Because of the wide range of signal processing, it can be widely used in the design of some high-precision instruments, fill the blank in the design of high-precision instruments in China, and produce considerable social and economic benefits.
【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】：2013
【分類號(hào)】：V474.2;P228

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 毛敏;鄭珍;周渭;;基于DDS的低通濾波器的設(shè)計(jì)與實(shí)現(xiàn)[J];電子科技;2006年03期

2 楊蕾;;基于DDS的高碼速率遙感衛(wèi)星模擬信號(hào)頻綜源設(shè)計(jì)與實(shí)現(xiàn)[J];電子器件;2009年06期

3 顧亞楠;陳忠貴;帥平;;國(guó)外導(dǎo)航衛(wèi)星星載原子鐘技術(shù)發(fā)展概況[J];國(guó)際太空;2008年10期

4 翟造成;楊佩紅;;第三代衛(wèi)星導(dǎo)航定位系統(tǒng)星載原子鐘的新發(fā)展[J];天文學(xué)進(jìn)展;2008年04期

5 遲忠君;徐云;常飛;;頻率合成技術(shù)發(fā)展概述[J];現(xiàn)代科學(xué)儀器;2006年03期

6 王義遒;建設(shè)我國(guó)獨(dú)立自主時(shí)間頻率系統(tǒng)的思考[J];宇航計(jì)測(cè)技術(shù);2004年01期

7 周渭;相檢寬帶測(cè)頻技術(shù)[J];儀器儀表學(xué)報(bào);1993年04期

8 杜保強(qiáng);周渭;陳法喜;周海牛;;一種新型超高精度頻標(biāo)比對(duì)系統(tǒng)的設(shè)計(jì)[J];儀器儀表學(xué)報(bào);2009年05期

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