【摘要】：隨著鐵路列控技術(shù)的發(fā)展，目前普遍認(rèn)同的是發(fā)展CBTC(Communication BasedTrain Control,基于通信的列車(chē)控制系統(tǒng))。CBTC中列車(chē)完整性檢查是關(guān)系到系統(tǒng)安全性的一個(gè)關(guān)鍵環(huán)節(jié)。在沒(méi)有軌道電路的情況下，，如何利用車(chē)載設(shè)備進(jìn)行列車(chē)完整性檢查將成為一個(gè)新的需要解決的問(wèn)題，所以研究一種新型的列車(chē)完整性檢查方法具有重要的理論價(jià)值和實(shí)際意義。 隨著通信、網(wǎng)絡(luò)、計(jì)算機(jī)等技術(shù)的發(fā)展，一些先進(jìn)的技術(shù)也逐步應(yīng)用到鐵路運(yùn)輸中。而以GPS(Global Positioning System,全球衛(wèi)星定位系統(tǒng))為代表的GNSS(Global Naviga-tion Satellite System,全球衛(wèi)星導(dǎo)航系統(tǒng))定位技術(shù)也越來(lái)越多的應(yīng)用到鐵路領(lǐng)域當(dāng)中。目前將GPS運(yùn)用于列車(chē)完整性檢查還沒(méi)有成熟的理論，它通常和列尾裝置結(jié)合構(gòu)成一個(gè)冗余的完整性檢查系統(tǒng)。在列車(chē)行駛過(guò)程中，在列車(chē)尾部車(chē)鉤安裝的GPS天線容易被車(chē)廂遮擋，在少于4顆衛(wèi)星的情況下(GPS不完備條件下)常規(guī)衛(wèi)星定位方法受到限制，無(wú)法實(shí)現(xiàn)利用GPS進(jìn)行列車(chē)完整性檢查。因此本論文利用車(chē)頭完全定位且與車(chē)尾通信保持暢通的特點(diǎn)，提出了一種新的列車(chē)完整性檢查方法，該方法是建立在GPS不完備條件下衛(wèi)星定位算法基礎(chǔ)上的。三星算法的核心思想是結(jié)合車(chē)頭定位信息建立一顆虛擬衛(wèi)星，從而增加一個(gè)約束方程，然后與可視衛(wèi)星構(gòu)成的方程聯(lián)立，從而實(shí)現(xiàn)車(chē)尾定位解算。即使在GPS正常工作期間，本算法仍然可以作為一個(gè)相當(dāng)有價(jià)值的補(bǔ)充。最后利用車(chē)頭和車(chē)尾的位置信息實(shí)時(shí)地測(cè)算車(chē)長(zhǎng)變化，從而實(shí)現(xiàn)檢查列車(chē)完整性的目的。論文對(duì)算法進(jìn)行了詳細(xì)的數(shù)學(xué)推導(dǎo)，并設(shè)計(jì)了GPS列車(chē)完整性檢查算法模擬軟件，通過(guò)實(shí)驗(yàn)進(jìn)行了算法驗(yàn)證，其定位精度較高，滿足列車(chē)完整性檢查的要求。
[Abstract]:With the development of railway train control technology, it is generally accepted that the train integrity inspection in CBTC (Communication BasedTrain Control, communication-based train control system). CBTC is a key link related to the safety of the system. In the absence of track circuit, how to use on-board equipment for train integrity inspection will become a new problem to be solved, so it is of great theoretical and practical significance to study a new train integrity inspection method. With the development of communication, network, computer and other technologies, some advanced technologies are gradually applied to railway transportation. GNSS (Global Naviga-tion Satellite System, Global Satellite Navigation system (GNSS (Global Naviga-tion Satellite System,), represented by GPS (Global Positioning System, Global Positioning system (GPS), is more and more used in railway field. At present, there is no mature theory that GPS is applied to train integrity check. It is usually combined with train tail device to form a redundant integrity inspection system. In the course of train running, the GPS antenna installed at the rear hook of the train is easily obscured by the car, and the conventional satellite positioning method is limited under the condition of less than four satellites (GPS is incomplete). It is impossible to use GPS to carry out train integrity inspection. Therefore, based on the characteristics of complete front positioning and smooth communication with the rear, a new train integrity inspection method is proposed in this paper, which is based on the satellite positioning algorithm under the condition of incomplete GPS. The core idea of Samsung algorithm is to establish a virtual satellite combined with the front positioning information, so as to add a constraint equation, and then go hand in hand with the equation composed of visual satellite, so as to realize the solution of rear positioning. Even during the normal operation of GPS, this algorithm can still be used as a valuable supplement. Finally, the position information of the front and rear is used to measure the change of the vehicle length in real time, so as to realize the purpose of checking the integrity of the train. In this paper, the algorithm is deduced in detail, and the simulation software of GPS train integrity inspection algorithm is designed. The algorithm is verified by experiments, and its positioning accuracy is high, which meets the requirements of train integrity inspection.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：U284.48;P228.4

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