本文關(guān)鍵詞： 載波測(cè)距 數(shù)字轉(zhuǎn)發(fā)載波 零值跳變 實(shí)驗(yàn)平臺(tái) 亞毫米精度　出處：《浙江大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著微小衛(wèi)星編隊(duì)系統(tǒng)的高速發(fā)展,星間高精度測(cè)距已經(jīng)成為一個(gè)重要課題,受到國(guó)內(nèi)外的廣泛關(guān)注。雙程轉(zhuǎn)發(fā)載波測(cè)距系統(tǒng)可以測(cè)得一個(gè)載波波長(zhǎng)范圍內(nèi)高精度的相對(duì)距離值,并且實(shí)現(xiàn)簡(jiǎn)單,已經(jīng)在已有的模擬平臺(tái)上以模擬轉(zhuǎn)發(fā)載波的方式得到了初步驗(yàn)證。從雙程轉(zhuǎn)發(fā)載波測(cè)距用于絕對(duì)距離測(cè)量的發(fā)展方向出發(fā),同時(shí)為了方便進(jìn)一步研究驗(yàn)證,本文提出以數(shù)字轉(zhuǎn)發(fā)載波的方式實(shí)現(xiàn)穩(wěn)定的雙程轉(zhuǎn)發(fā)載波測(cè)距。 本文首先在已有的數(shù)字平臺(tái)上以數(shù)字轉(zhuǎn)發(fā)載波的方式對(duì)雙程轉(zhuǎn)發(fā)載波測(cè)距進(jìn)行驗(yàn)證,發(fā)現(xiàn)存在與模擬轉(zhuǎn)發(fā)載波相同的距離零值跳變問(wèn)題。文中對(duì)該問(wèn)題進(jìn)行了詳細(xì)地分析并提出了相應(yīng)的解決方案,同時(shí)也分析了影響測(cè)距性能的因素并提出了相應(yīng)的改進(jìn)方案。根據(jù)提出的方案,本文對(duì)實(shí)驗(yàn)平臺(tái)提出了新的需求,并根據(jù)需求建立了雙程數(shù)字轉(zhuǎn)發(fā)載波測(cè)距實(shí)驗(yàn)平臺(tái),包括硬件平臺(tái)的設(shè)計(jì)與軟件平臺(tái)的改進(jìn)。硬件平臺(tái)設(shè)計(jì)分為C波段射頻板、晶振板、中頻濾波板的設(shè)計(jì)和中頻板與S波段射頻板的改進(jìn),軟件平臺(tái)改進(jìn)包括相干轉(zhuǎn)發(fā)方式、數(shù)字鎖相環(huán)參數(shù)、處理位數(shù)、濾波性能等的改進(jìn)。本文最后對(duì)實(shí)驗(yàn)平臺(tái)進(jìn)行了測(cè)試驗(yàn)證,首先驗(yàn)證了硬件實(shí)驗(yàn)平臺(tái)的功能與性能,然后結(jié)合軟件平臺(tái)對(duì)雙程數(shù)字轉(zhuǎn)發(fā)載波測(cè)距系統(tǒng)進(jìn)行全面測(cè)試驗(yàn)證。對(duì)引起距離零值跳變問(wèn)題的三方面原因進(jìn)行對(duì)比測(cè)試消除零值跳變現(xiàn)象,對(duì)軟件部分每個(gè)改進(jìn)點(diǎn)都進(jìn)行相同條件下的對(duì)比測(cè)試,提升了測(cè)距精度。 結(jié)合本文所有測(cè)試結(jié)果,表明本文設(shè)計(jì)的實(shí)驗(yàn)平臺(tái)用數(shù)字轉(zhuǎn)發(fā)載波的方式實(shí)現(xiàn)了穩(wěn)定的雙程轉(zhuǎn)發(fā)載波測(cè)距系統(tǒng)。目前系統(tǒng)單獨(dú)用于測(cè)量相對(duì)距離(有零值跳變),測(cè)試時(shí)間為10分鐘與11秒時(shí)的距離精度分別可以達(dá)到36.4um與20.35um；用于測(cè)量絕對(duì)距離(無(wú)零值跳變),測(cè)試時(shí)間為10分鐘與11秒時(shí)的距離精度分別可以達(dá)到125.9um與59.09um,滿足了亞毫米精度的指標(biāo)要求,為與偽碼測(cè)距系統(tǒng)結(jié)合完成高精度絕對(duì)距離的測(cè)量作了準(zhǔn)備。
[Abstract]:With the rapid development of micro-satellite formation system, high-precision ranging between satellites has become an important issue. Dual-pass forward carrier ranging system can measure a high precision relative distance value in the carrier wavelength range, and it is simple to realize. It has been preliminarily verified on the existing simulation platform in the way of analog forwarding carrier. Starting from the development direction of dual-pass forward carrier ranging used for absolute distance measurement, and in order to facilitate further research and verification. In this paper, a digital forwarding carrier is proposed to achieve a stable dual-way forward carrier ranging. In this paper, we first verify the dual-pass carrier distance measurement by digital forwarding carrier on the existing digital platform. It is found that there is the same distance zero jump problem as analog forward carrier. This problem is analyzed in detail and the corresponding solution is put forward. At the same time, the factors that affect the ranging performance are analyzed and the corresponding improvement scheme is put forward. According to the proposed scheme, this paper puts forward new requirements for the experimental platform. And according to the needs of dual-pass digital forwarding carrier ranging experimental platform, including hardware platform design and software platform improvement. The hardware platform design is divided into C-band RF board, crystal oscillator board. The design of if filter board and the improvement of if board and S-band RF board. The improvement of software platform includes coherent forwarding mode, digital phase-locked loop parameters, processing bit number. Finally, the experiment platform is tested and verified. Firstly, the function and performance of the hardware experimental platform are verified. Then combined with the software platform to carry out a comprehensive test verification of the dual-pass digital forwarding carrier ranging system, and compared the three causes of the zero-value jump problem to eliminate the zero-value jump phenomenon. The accuracy of ranging is improved by comparing and testing each improvement point of software under the same conditions. Combined with all the test results in this article. It shows that the experimental platform designed in this paper realizes a stable dual-pass relay carrier ranging system by digital forwarding carrier, and the system is used to measure relative distance (zero jump). The distance accuracy of 10 minutes and 11 seconds can reach 36.4um and 20.35umrespectively. For measuring absolute distance (no zero jump), the distance accuracy of 10 minutes and 11 seconds can reach 125.9um and 59.09um, respectively. It meets the requirement of submillimeter precision, and makes preparation for high precision absolute distance measurement combined with pseudo-code ranging system.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：P225.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 趙翔宇;郁發(fā)新;王春暉;金仲和;;皮衛(wèi)星星間高精度載波測(cè)距系統(tǒng)研究[J];傳感技術(shù)學(xué)報(bào);2007年06期

2 湯漢屏;直接數(shù)字頻率合成雜散抑制方法的研究[J];電訊技術(shù);2002年05期

3 陸祖良;;DAC混疊效應(yīng)的應(yīng)用討論[J];電測(cè)與儀表;2012年01期

4 詹亞鋒,馬正新,曹志剛;現(xiàn)代微小衛(wèi)星技術(shù)及發(fā)展趨勢(shì)[J];電子學(xué)報(bào);2000年07期

5 劉洋;易東云;王正明;;編隊(duì)衛(wèi)星星間相對(duì)狀態(tài)測(cè)量的國(guó)外研究現(xiàn)狀[J];飛行器測(cè)控學(xué)報(bào);2006年02期

6 黃勇;帶通均勻欠采樣技術(shù)及其應(yīng)用[J];四川工業(yè)學(xué)院學(xué)報(bào);1998年04期

7 陳仕進(jìn);高精度測(cè)距方法研究[J];無(wú)線電工程;2003年12期

8 孫曉聞;張瑞永;陳國(guó)海;;直接數(shù)字頻率合成器的相位噪聲分析[J];現(xiàn)代雷達(dá);2009年06期

9 陳谷倉(cāng),王元?dú)J,王天祥,陳宏;編隊(duì)小衛(wèi)星相對(duì)位置和相對(duì)姿態(tài)解算模型與精度分析[J];系統(tǒng)仿真學(xué)報(bào);2005年11期

10 張乃通;李暉;張欽宇;;深空探測(cè)通信技術(shù)發(fā)展趨勢(shì)及思考[J];宇航學(xué)報(bào);2007年04期

相關(guān)博士學(xué)位論文 前1條

1 金小軍;再生偽碼測(cè)距技術(shù)及實(shí)現(xiàn)研究[D];浙江大學(xué);2007年

相關(guān)碩士學(xué)位論文 前2條

1 王飛行;AOS體制下測(cè)距方法的研究[D];國(guó)防科學(xué)技術(shù)大學(xué);2004年

2 鄭云卓;數(shù)字測(cè)控應(yīng)答機(jī)射頻系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)[D];浙江大學(xué);2008年

，

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