本文關(guān)鍵詞： GPS 捕獲 跟蹤 多通道 FPGA 定位　出處：《北京交通大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：摘要：現(xiàn)在衛(wèi)星導(dǎo)航定位系統(tǒng)已經(jīng)廣泛的運用在軍事和民用部門,繼美國和俄羅斯后我國也成功的開發(fā)出北斗導(dǎo)航定位系統(tǒng),所以對衛(wèi)星定位接收機技術(shù)的研究勢在必行。本論文主要對的GPS接收機的多通道捕獲跟蹤在FPGA上設(shè)計進行了研究和實現(xiàn),同時進行了相對偽距定位算法的研究。本論文使用的是頻點跳變法捕獲跟蹤衛(wèi)星,相位跳變法解獲星歷。實現(xiàn)多通道捕獲跟蹤并準確的解出導(dǎo)航電文后,需要給定位算法軟件提供導(dǎo)航信息參數(shù)和不同衛(wèi)星到達接收機的時間差。 首先論文闡述了GPS定位系統(tǒng)的基本概念、衛(wèi)星的捕獲跟蹤的基礎(chǔ)原理、GPS衛(wèi)星定位的基本原理和方法。然后在硬件部分,為了實現(xiàn)FPGA上多通道捕獲跟蹤并成功解除導(dǎo)航電文,分別對設(shè)計當中的單通道捕獲、單通道跟蹤、衛(wèi)星信息傳輸和分配、時間間隔計數(shù)和數(shù)據(jù)上傳六個模塊在FPGA里的實現(xiàn)方法進行了分析和驗證。單通道捕獲跟蹤部分重點介紹頻點跳變法捕獲跟蹤和相位跳變法解獲星歷,捕獲傳輸和分配部分完成了把捕獲到的衛(wèi)星信息實時和不重復(fù)的分配給多個通道,時間間隔計數(shù)部分主要的功能是提取出各顆衛(wèi)星到達接收機的時間差,數(shù)據(jù)上傳部分把解出的星歷和時間差以固定的格式傳送給定位軟件。最后本論文對相對偽距定位算法和軟件實現(xiàn)進行了研究。 通過對設(shè)計的仿真驗證,成功的實現(xiàn)了多通道捕獲跟蹤并且準確的解出衛(wèi)星星歷。使用這種多通道跟蹤方法可以有效的利用硬件資源,減小功耗。本論文對相對偽距定位算法及軟件的研究,也為以后精確定位提供了理論基礎(chǔ)。
[Abstract]:Absrtact: now the satellite navigation and positioning system has been widely used in the military and civil departments, after the United States and Russia, China has successfully developed the Beidou navigation and positioning system. Therefore, it is imperative to study the technology of satellite positioning receiver. This paper mainly focuses on the design and implementation of multi-channel acquisition and tracking of GPS receiver on FPGA. At the same time, the relative pseudo-range location algorithm is studied. In this paper, the frequency hopping method is used to capture and track satellite, the phase jump method to solve the ephemeris, to achieve multi-channel acquisition and tracking and accurate solution of navigation message. The navigation information parameters and the time difference between different satellites arriving at the receiver should be provided to the localization algorithm software. Firstly, the paper describes the basic concept of GPS positioning system, the basic principle of satellite capture and tracking, and the basic principle and method of GPS positioning. Then, in the hardware part. In order to realize the multi-channel capture and tracking on FPGA and successfully release the navigation message, the single channel acquisition, single channel tracking, satellite information transmission and distribution in the design are carried out respectively. The implementation method of six modules of time interval counting and data uploading is analyzed and verified in FPGA. In the part of single channel capture and tracking, the frequency hopping capture tracking and phase hopping method are introduced to solve the ephemeris. The acquisition transmission and distribution part completes the real-time and non-repeated allocation of the captured satellite information to multiple channels. The main function of the time interval counting section is to extract the time difference between each satellite to the receiver. The data upload part transfers the calculated ephemeris and time difference to the location software in a fixed format. Finally, the relative pseudo-range localization algorithm and the software implementation are studied in this paper. Through the simulation verification of the design, the multi-channel capture and tracking is successfully realized and the satellite ephemeris is solved accurately. Using this multi-channel tracking method, the hardware resources can be used effectively. In this paper, the research of relative pseudo-range location algorithm and software also provides a theoretical basis for future accurate positioning.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN96.1

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本文編號：1491989