基于Cesium平臺的導(dǎo)航衛(wèi)星軌道模擬與可視化
發(fā)布時間：2019-03-28 12:33
【摘要】：隨著計算機和互聯(lián)網(wǎng)技術(shù)的發(fā)展,知識與信息的普及和共享逐漸成為這個時代的主題。網(wǎng)絡(luò)的發(fā)達極大減少了信息不對等,專業(yè)數(shù)據(jù)現(xiàn)在也能為普通人獲取和使用,而眾多"開源"工具的出現(xiàn)也降低了應(yīng)用開發(fā)的成本,促進了網(wǎng)絡(luò)產(chǎn)品的多樣化,其中也包括對GNSS可視化的研究。互聯(lián)網(wǎng)提供了豐富的研究導(dǎo)航衛(wèi)星運動的數(shù)據(jù)、資料、方法和工具,人們可以方便地獲取這些內(nèi)容。但目前關(guān)于GNSS軌道模擬與可視化的研究多采用二次開發(fā)的方式完成。這種方式不僅需要支付組件購置費,要求研究者具備一定的導(dǎo)航和通信專業(yè)知識,以及多種計算機語言編程能力。而且開發(fā)成品以需要下載安裝的軟件為主,網(wǎng)絡(luò)傳播效率不夠高。在開發(fā)成本、傳播成本、傳播效率上,這種實現(xiàn)方式并不適應(yīng)web生態(tài)。以Cesium為代表的運行于web端的數(shù)字地球產(chǎn)品則可以作為衛(wèi)星軌道可視化平臺,創(chuàng)建以GNSS為研究主體的可視化應(yīng)用,彌補上述開發(fā)現(xiàn)狀的不足。本文以全球四大GNSS衛(wèi)星和太空垃圾為研究對象,提出具有流式數(shù)據(jù)傳輸特點的,基于Cesium平臺的太空目標物軌道模擬與可視化方法:本研究采用權(quán)威發(fā)布的目標物軌跡參量和天文模型計算其運動軌跡;使用新型文本語言CZML來記錄和描述目標物運動狀態(tài);發(fā)揮CZML格式的特色傳輸機制,使用SSE技術(shù)(Server-Sent Event)實現(xiàn)CZML軌道數(shù)據(jù)的流式傳輸,減輕web端數(shù)據(jù)通信壓力,提高可視化效率與交互體驗。論文首先搜集目標物的軌道參數(shù)資料——兩行根參數(shù)(TLE,Two Line Element),與天文學(xué)計算腳本——SGP4結(jié)合,計算各目標物軌跡數(shù)據(jù),將結(jié)果存儲到CZML文件中;接著將SSE技術(shù)與CZML特有的流式傳輸機制結(jié)合,實現(xiàn)軌道數(shù)據(jù)的流式傳輸;最后使用Cesium API搭建web端的GNSS軌道模擬與可視化系統(tǒng)。該系統(tǒng)不僅提供基本的導(dǎo)航衛(wèi)星和太空垃圾的軌跡可視化功能,還可以進行衛(wèi)星星下點位置、過頂預(yù)報等衛(wèi)星天文屬性信息的查詢,為用戶了解導(dǎo)航衛(wèi)星和太空提供更加全面、科學(xué)的認知途徑。本文提出的基于Cesium數(shù)字地球平臺的全球GNSS衛(wèi)星軌道模擬與可視化方法,實踐門檻低、可視化信息豐富、交互性強、數(shù)據(jù)傳輸快,是契合web網(wǎng)絡(luò)平臺與HTML5新規(guī)范的數(shù)據(jù)可視化思路。該方法將有助于以更加生動、有趣又不失科學(xué)性的方式表達、展示、交流衛(wèi)星的軌道、姿態(tài)信息,以及包括太空垃圾在內(nèi)的科學(xué)知識,為增進人們對導(dǎo)航衛(wèi)星的認識乃至提高太空意識都有所裨益。
[Abstract]:With the development of computer and Internet technology, the popularization and sharing of knowledge and information has gradually become the theme of this era. The development of the network has greatly reduced information inequality, professional data can now be accessed and used by ordinary people, and the emergence of many "open source" tools has also reduced the cost of application development and promoted the diversification of network products. It also includes the research of GNSS visualization. The Internet provides a wealth of data, information, methods and tools for studying GNSS movements that people can easily access. But at present, the research on GNSS orbit simulation and visualization is done by the way of secondary development. This approach not only needs to pay for the purchase of components, but also requires the researcher to have a certain degree of navigation and communication expertise, as well as a variety of computer language programming capabilities. And the development of finished products to need to download and install the software-based, network communication efficiency is not high enough. In terms of development cost and communication efficiency, this implementation is not suitable for web ecology. The digital earth products, such as Cesium, which run on the web, can be used as the visualization platform of satellite orbit, and the visualization application based on GNSS can be created, which can make up for the deficiency of the above-mentioned development situation. In this paper, four major GNSS satellites and space garbage in the world are studied, and the features of streaming data transmission are proposed. The orbit simulation and visualization method of space object based on Cesium platform: in this study, the trajectory parameters and astronomical model are used to calculate the trajectory of the object. A new text language, CZML, is used to record and describe the moving state of the object. This paper gives full play to the characteristic transmission mechanism of CZML format, uses SSE technology (Server-Sent Event) to realize the streaming transmission of CZML track data, lightens the pressure of data communication on the web end, and improves the visualization efficiency and interactive experience. Firstly, the orbital parameters of the target-two-line root parameters (TLE,Two Line Element),) combined with the astronomical script-SGP4 are collected to calculate the trajectory data of each target, and the results are stored in the CZML file. Then the SSE technology and the special streaming transmission mechanism of CZML are combined to realize the streaming transmission of track data. Finally the GNSS orbit simulation and visualization system on the web end is built by using Cesium API. The system not only provides basic navigation satellite and space garbage trajectory visualization function, but also can query satellite astronomical attribute information such as satellite subsatellite point position, over-top prediction and so on, so as to provide users with a more comprehensive understanding of navigation satellite and space. The cognitive pathway of science. The method of global GNSS satellite orbit simulation and visualization based on Cesium digital earth platform is presented in this paper, which has the advantages of low threshold of practice, rich visualization information, strong interaction and fast data transmission. Is in line with web network platform and HTML5 new specification of data visualization ideas. This approach will help to express, demonstrate and exchange satellite orbit, attitude information, and scientific knowledge, including space debris, in a more vivid, interesting and scientific way. It is helpful to improve people's understanding of navigation satellites and even to raise awareness of space.
【學(xué)位授予單位】：華東師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P228.4
本文編號：2448870
[Abstract]:With the development of computer and Internet technology, the popularization and sharing of knowledge and information has gradually become the theme of this era. The development of the network has greatly reduced information inequality, professional data can now be accessed and used by ordinary people, and the emergence of many "open source" tools has also reduced the cost of application development and promoted the diversification of network products. It also includes the research of GNSS visualization. The Internet provides a wealth of data, information, methods and tools for studying GNSS movements that people can easily access. But at present, the research on GNSS orbit simulation and visualization is done by the way of secondary development. This approach not only needs to pay for the purchase of components, but also requires the researcher to have a certain degree of navigation and communication expertise, as well as a variety of computer language programming capabilities. And the development of finished products to need to download and install the software-based, network communication efficiency is not high enough. In terms of development cost and communication efficiency, this implementation is not suitable for web ecology. The digital earth products, such as Cesium, which run on the web, can be used as the visualization platform of satellite orbit, and the visualization application based on GNSS can be created, which can make up for the deficiency of the above-mentioned development situation. In this paper, four major GNSS satellites and space garbage in the world are studied, and the features of streaming data transmission are proposed. The orbit simulation and visualization method of space object based on Cesium platform: in this study, the trajectory parameters and astronomical model are used to calculate the trajectory of the object. A new text language, CZML, is used to record and describe the moving state of the object. This paper gives full play to the characteristic transmission mechanism of CZML format, uses SSE technology (Server-Sent Event) to realize the streaming transmission of CZML track data, lightens the pressure of data communication on the web end, and improves the visualization efficiency and interactive experience. Firstly, the orbital parameters of the target-two-line root parameters (TLE,Two Line Element),) combined with the astronomical script-SGP4 are collected to calculate the trajectory data of each target, and the results are stored in the CZML file. Then the SSE technology and the special streaming transmission mechanism of CZML are combined to realize the streaming transmission of track data. Finally the GNSS orbit simulation and visualization system on the web end is built by using Cesium API. The system not only provides basic navigation satellite and space garbage trajectory visualization function, but also can query satellite astronomical attribute information such as satellite subsatellite point position, over-top prediction and so on, so as to provide users with a more comprehensive understanding of navigation satellite and space. The cognitive pathway of science. The method of global GNSS satellite orbit simulation and visualization based on Cesium digital earth platform is presented in this paper, which has the advantages of low threshold of practice, rich visualization information, strong interaction and fast data transmission. Is in line with web network platform and HTML5 new specification of data visualization ideas. This approach will help to express, demonstrate and exchange satellite orbit, attitude information, and scientific knowledge, including space debris, in a more vivid, interesting and scientific way. It is helpful to improve people's understanding of navigation satellites and even to raise awareness of space.
【學(xué)位授予單位】：華東師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P228.4
【參考文獻】
相關(guān)期刊論文 前10條
1 張大力;;基于STK軟件的北斗導(dǎo)航衛(wèi)星軌道模擬[J];測繪工程;2015年07期
2 馮燕來;劉陽;車德朝;;衛(wèi)星軌道計算方法及精度分析[J];指揮信息系統(tǒng)與技術(shù);2014年05期
3 王洪利;;全球四大衛(wèi)星導(dǎo)航系統(tǒng)概述與比較[J];科技致富向?qū)?2014年20期
4 李鶴峰;黨亞民;秘金鐘;薛樹強;;北斗衛(wèi)星導(dǎo)航系統(tǒng)的發(fā)展、優(yōu)勢及建議[J];導(dǎo)航定位學(xué)報;2013年02期
5 寧津生;姚宜斌;張小紅;;全球?qū)Ш叫l(wèi)星系統(tǒng)發(fā)展綜述[J];導(dǎo)航定位學(xué)報;2013年01期
6 方繼嗣;朱衍波;王志鵬;;EGNOS完好性關(guān)鍵參數(shù)的處理與分析[J];中國民航大學(xué)學(xué)報;2013年01期
7 李大衛(wèi);劉靜;張耀;;TLE數(shù)據(jù)誤差與基于TLE數(shù)據(jù)的交會預(yù)報分析[J];空間科學(xué)學(xué)報;2012年03期
8 張家愛;孫飛;;Comet技術(shù)在Web開發(fā)中的研究與應(yīng)用[J];煤炭技術(shù);2011年12期
9 何思捷;楊磊;陳小前;;基于LabVIEW與STK的衛(wèi)星軌道預(yù)報可視化仿真平臺設(shè)計[J];科學(xué)技術(shù)與工程;2011年23期
10 劉衛(wèi);繆元興;;SGP4/SDP4模型預(yù)報可靠性分析[J];天文研究與技術(shù);2011年02期
相關(guān)會議論文 前1條
1 徐楨;劉強;;衛(wèi)星導(dǎo)航區(qū)域增強系統(tǒng)的應(yīng)用與發(fā)展[A];2007第三屆中國智能交通年會論文集[C];2007年
相關(guān)碩士學(xué)位論文 前4條
1 戴俊;基于STK的空間目標飛行可視化仿真[D];西安電子科技大學(xué);2014年
2 白海波;WebSocket技術(shù)在體育賽事網(wǎng)站中的研究與應(yīng)用[D];東華大學(xué);2014年
3 劉鍇;GNSS衛(wèi)星導(dǎo)航系統(tǒng)仿真[D];西安電子科技大學(xué);2014年
4 李寧;基于立體視覺的三維尺寸測量系統(tǒng)研制[D];合肥工業(yè)大學(xué);2013年
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