基于CMOS探測(cè)器的湍流信道高性能ATP技術(shù)研究
本文關(guān)鍵詞: 空間光通信 湍流信道 ATP CMOS探測(cè)器 出處:《電子科技大學(xué)》2017年碩士論文 論文類型:學(xué)位論文
【摘要】:ATP(Acquisition,Tracking and pointing)技術(shù)是空間激光通信鏈路快速建立和保持鏈路穩(wěn)定的重要條件,ATP技術(shù)是空間激光通信領(lǐng)域研究的熱點(diǎn)和難點(diǎn)。本文以某近地湍流信道空間激光通信項(xiàng)目為依托,開展了基于CMOS探測(cè)器的湍流信道高性能ATP技術(shù)研究,研究主要目標(biāo)是完成具有大視場(chǎng)快速捕獲能力及小視場(chǎng)高性能跟蹤的ATP方案設(shè)計(jì)及實(shí)現(xiàn)。論文主要研究?jī)?nèi)容如下:1)論文開展了ATP技術(shù)國(guó)內(nèi)外動(dòng)態(tài)分析,梳理了ATP技術(shù)發(fā)展在目前所存在的問題,根據(jù)應(yīng)用需求,確定了論文研究目標(biāo)。2)論文開展了ATP系統(tǒng)性能主要影響因素分析工作,其中涉及大氣湍流對(duì)光斑檢測(cè)的影響;對(duì)光斑檢測(cè)主要誤差來源進(jìn)行研究,并對(duì)噪聲對(duì)系統(tǒng)性能影響進(jìn)行分析;平臺(tái)抖動(dòng)對(duì)ATP系統(tǒng)性能影響;確定了論文研究的性能指標(biāo)。3)論文開展了近地湍流ATP系統(tǒng)重要方案設(shè)計(jì),主要包括:完成基于CMOS自適應(yīng)開窗的ATP掃描捕獲、粗精跟蹤方案的設(shè)計(jì);完成CMOS探測(cè)器的去噪算法分析及設(shè)計(jì);完成光斑質(zhì)心算法分析及設(shè)計(jì)。并通過仿真驗(yàn)證了粗精跟蹤閉環(huán)執(zhí)行性能以及光斑去噪算法性能。4)基于Altera Cyclone系列FPGA芯片,完成ATP系統(tǒng)主控模塊及光斑檢測(cè)模塊設(shè)計(jì)及電路實(shí)現(xiàn),通過實(shí)驗(yàn)測(cè)試方法驗(yàn)證了論文設(shè)計(jì)方案的可行性和有效性。5)搭建近地湍流信道10KM無線光通信實(shí)驗(yàn)平臺(tái)開展了鏈路級(jí)測(cè)試驗(yàn)證,驗(yàn)證結(jié)果表明:系統(tǒng)完整實(shí)現(xiàn)了基于CMOS自適應(yīng)開窗功能的捕獲、粗精跟蹤功能,并成功建立雙通鏈路;155Mbps傳輸碼率條件下,3*24小時(shí)通信誤碼率保持在1E-7量級(jí);粗跟蹤精度優(yōu)于24μrad;精跟蹤帶寬達(dá)到1khz、控制精度優(yōu)于5μrad。
[Abstract]:ATP technology is an important condition for the rapid establishment and maintenance of link stability of space laser communication links. ATP technology is a hot and difficult point in the field of space laser communication. This paper is based on a project of space laser communication in near-ground turbulent channel. The high performance ATP technology of turbulent channel based on CMOS detector is studied. The main goal of this paper is to complete the design and implementation of ATP scheme with large field of view fast capture ability and small field of view high performance tracking. The main research contents of this paper are as follows: 1) the dynamic analysis of ATP technology at home and abroad is carried out in this paper. Combing the problems existing in the development of ATP technology at present, according to the application requirements, the research objective of this paper is determined. (2) the main factors affecting the performance of ATP system are analyzed in this paper, including the influence of atmospheric turbulence on spot detection. The main error sources of spot detection are studied, and the influence of noise on system performance is analyzed. The platform jitter affects the performance of ATP system. The performance index. 3) the important scheme design of near-ground turbulence ATP system is carried out. The main contents are as follows: the design of ATP scanning acquisition based on CMOS adaptive window opening, the design of coarse fine tracking scheme, the analysis and design of CMOS detector de-noising algorithm; Finish the analysis and design of spot centroid algorithm, and verify the performance of coarse fine tracking closed loop and speckle denoising algorithm .4) based on Altera Cyclone series FPGA chip, the design and circuit realization of the main control module and spot detection module of ATP system are completed. The feasibility and validity of the design scheme are verified by the experimental test method. 5) the link level test verification is carried out on the 10km wireless optical communication platform of near-ground turbulence channel. The verification results show that the system realizes the capture and coarse fine tracking function based on CMOS adaptive window opening function, and successfully establishes a double-pass link with 155Mbps transmission bit rate to maintain the error rate in the order of 1E-7 under the condition of the transmission rate of 155Mbps. The coarse tracking accuracy is better than 24 渭 radand the precision tracking bandwidth is 1 kHz and the control precision is better than 5 渭 rad.
【學(xué)位授予單位】:電子科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TN929.1
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 冉海潮,孫麗華;基于煙氣湍流效應(yīng)的火災(zāi)判據(jù)[J];傳感技術(shù)學(xué)報(bào);2001年01期
2 宋正方;折疊光路上的湍流效應(yīng)[J];激光技術(shù);1988年01期
3 錢仙妹;朱文越;饒瑞中;;地空激光大氣斜程傳輸湍流效應(yīng)的數(shù)值模擬分析[J];紅外與激光工程;2008年05期
4 朱保華;黃靜;;湍流效應(yīng)對(duì)大氣激光信號(hào)傳輸影響的仿真分析[J];激光雜志;2013年03期
5 王正;李向陽;陳杰;趙祥迪;;重氣擴(kuò)散場(chǎng)中復(fù)雜障礙物周圍湍流效應(yīng)的評(píng)估[J];計(jì)算機(jī)與應(yīng)用化學(xué);2014年01期
6 王麗黎,柯熙政;湍流效應(yīng)對(duì)光通信鏈路的影響研究與仿真[J];光散射學(xué)報(bào);2004年03期
7 劉建國(guó),黃印博,王英儉;強(qiáng)湍流效應(yīng)下激光大氣傳輸短曝光光斑統(tǒng)計(jì)分析[J];強(qiáng)激光與粒子束;2005年03期
8 王英儉,吳毅,汪超,候再紅,楊剛,龔知本,王春紅,鮮浩,李新陽,吳旭斌,姜文漢;激光實(shí)際大氣傳輸湍流效應(yīng)相位校正一些實(shí)驗(yàn)結(jié)果[J];量子電子學(xué)報(bào);1998年02期
9 董秀清;楊炳元;金海望;劉洵宇;高科;白玉潔;;基于ATP模型下的消弧線圈接地系統(tǒng)特性分析[J];電氣自動(dòng)化;2012年03期
10 季智芳;潘華珍;熊連芳;方鳴武;;小鼠腹腔巨噬細(xì)胞吞噬人紅細(xì)胞過程中的電鏡觀察與,
本文編號(hào):1531290
本文鏈接:http://sikaile.net/kejilunwen/xinxigongchenglunwen/1531290.html