發(fā)布時間：2018-12-06 13:53

【摘要】：我國正在全面推動發(fā)展獨立知識產權的“北斗二號”衛(wèi)星導航系統，亟需能夠模擬導航信號的模擬源，用于相關導航產品的研發(fā)和生產。軟件模擬源具有成本低廉、能產生復雜信號、便于升級等優(yōu)點。因此，本文針對“北斗二號”B1信號的軟件模擬源進行深入研究，實現信號的軟件仿真和硬件生成。 本文的主要研究內容包括3個方面： 首先，分析北斗衛(wèi)星導航系統的基本原理以及B1信號的結構和組成。研究導航信號模擬源的仿真對象，即導航信號及其傳播過程中發(fā)生的電離層延遲、對流層延遲和多徑延遲等誤差。 然后，根據模擬信號的要求，基于VS2008和MATLAB2010a研究導航信號的模擬方法及其軟件實現的主要框架，，確定B1信號和10種干擾噪聲的數據結構。開發(fā)“北斗二號”B1信號軟件模擬源，基于TCP/IP協議設計遠程控制功能，實現定時開關信號等功能。 最后，通過軟件定義的衛(wèi)星接收機多次捕獲模擬B1信號，根據不同編號測距碼的信號的捕獲概率，驗證所產生信號的正確性。實測結果證實該軟件能夠正確模擬“北斗二號”B1信號。
[Abstract]:China is fully promoting the development of independent intellectual property rights of the "Beidou II" satellite navigation system, it is urgent to simulate the analog source of navigation signals for the development and production of related navigation products. The software analog source has the advantages of low cost, complex signal generation and easy upgrade. Therefore, the software analog source of "Beidou 2" B1 signal is studied in this paper, and the software simulation and hardware generation of the signal are realized. The main contents of this paper include three aspects: firstly, the basic principle of Beidou satellite navigation system and the structure and composition of B1 signal are analyzed. The simulation object of the simulated source of navigation signal is studied, that is, the errors such as ionospheric delay, tropospheric delay and multipath delay occurring during the navigation signal and its propagation are studied. Then, according to the requirement of analog signal, based on VS2008 and MATLAB2010a, the simulation method of navigation signal and the main frame of its software realization are studied, and the data structure of B1 signal and 10 kinds of interference noise are determined. The software analog source of "Beidou No.2" B1 signal is developed, the remote control function is designed based on TCP/IP protocol, and the timing switch signal is realized. Finally, the analog B1 signal is captured multiple times by the satellite receiver defined by the software, and the correctness of the generated signal is verified according to the acquisition probability of the signal of different numbering ranging codes. The measured results show that the software can simulate Beidou 2 B1 signal correctly.
【學位授予單位】：西安電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN96.1

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