多頻段GNSS信號(hào)兼容技術(shù)研究
發(fā)布時(shí)間：2019-02-27 20:24
【摘要】：美國(guó)全球定位系統(tǒng)（Global Positioning System, GPS）的建成給世界的導(dǎo)航、定位與授時(shí)技術(shù)帶來(lái)了巨大變革，俄羅斯，歐洲，中國(guó)也相繼發(fā)展各自獨(dú)立的L頻段全球?qū)Ш叫l(wèi)星系統(tǒng)（Global Navigation Satellite System，GNSS）。與L頻段GNSS信號(hào)相比，C頻段信號(hào)具有抗電離層影響和抗多路徑性能好的優(yōu)點(diǎn)，能夠?yàn)閷?duì)信號(hào)質(zhì)量要求高的航空、金融和電力等國(guó)家重要部門和行業(yè)提供更加安全的服務(wù)性能，而S頻段導(dǎo)航服務(wù)易與該頻段上其它移動(dòng)和無(wú)線服務(wù)融合的優(yōu)勢(shì)同樣引起了各國(guó)對(duì)S頻段GNSS的開(kāi)發(fā)和建設(shè)，，未來(lái)C、S頻段上多個(gè)導(dǎo)航衛(wèi)星系統(tǒng)信號(hào)共存同樣不容忽視，各頻段上射頻信號(hào)干擾不可避免，因此開(kāi)展多頻段GNSS信號(hào)的兼容性技術(shù)研究對(duì)于L、C、S頻段導(dǎo)航衛(wèi)星系統(tǒng)建設(shè)與發(fā)展意義重大。本文以863主題項(xiàng)目課題“GNSS兼容互用技術(shù)及新型信號(hào)體制研究”和專項(xiàng)課題“GNSS L/S/C頻段兼容性分析研究”的研究?jī)?nèi)容為基礎(chǔ)，對(duì)L、C、S頻段GNSS信號(hào)的兼容性進(jìn)行全面理論分析和仿真驗(yàn)證，并完善GNSS信號(hào)與帶外射頻信號(hào)的兼容性分析技術(shù)，深入研究GNSS信號(hào)信號(hào)調(diào)制和擴(kuò)頻碼的設(shè)計(jì)技術(shù)，分析調(diào)制信號(hào)對(duì)兼容性的影響，并提出擴(kuò)頻碼的設(shè)計(jì)新方法和擴(kuò)頻碼兼容性分析概念。 本文研究?jī)?nèi)容主要分為以下4個(gè)方面： （1）全面分析GNSS信號(hào)兼容評(píng)估的模型和方法，分別構(gòu)建基于頻譜分離系數(shù)（Spectral Sepration Coefficient，SSC）和碼跟蹤譜靈敏度系數(shù)（Code TrackingSpctral Sensitivity Coefficient，CT_SSC）的兼容評(píng)估模型，確立有效載噪比衰減作為L(zhǎng)、C、S頻段GNSS信號(hào)兼容評(píng)估的通用方法，仿真計(jì)算各頻段兼容性，并對(duì)結(jié)果進(jìn)行評(píng)估。 （2）分析L、C、S頻段GNSS信號(hào)和相鄰射頻信號(hào)的干擾特征，確定干擾評(píng)估的模型和方法，并進(jìn)行干擾評(píng)估，包括L頻段GNSS信號(hào)和射電天文（RadioAstronomy，RA）的干擾評(píng)估；C頻段GNSS信號(hào)和RA，以及微波著陸系統(tǒng)（Micowave Landing System，MLS）的干擾評(píng)估；S頻段GNSS信號(hào)和Globalstar系統(tǒng)，固定業(yè)務(wù)（Fixed Service，F(xiàn)S），以及全球微波互聯(lián)接入（WorldwideInteroperability for Microwave Access，WiMAX）的干擾評(píng)估。 （3）分析GNSS信號(hào)的波形調(diào)制，提出C頻段采用最小頻移鍵控及二進(jìn)制編碼符號(hào)（Minimum Shift Keying-Binary Code Symbol，MSK-BCS）調(diào)制波形的兼容性優(yōu)于傳統(tǒng)導(dǎo)航信號(hào)調(diào)制波形，而S頻段采用一般二進(jìn)制偏移載波調(diào)制（Generalised Binary Offset Carrier，GBOC）調(diào)制波形時(shí)，兼容性能也有所改善。 （4）基于Weil序列生成與GPS L1C信號(hào)的擴(kuò)頻碼奇偶自互相關(guān)性能相當(dāng)?shù)?0230長(zhǎng)度擴(kuò)頻碼序列，提出一種新型擴(kuò)頻碼生成方法，并通過(guò)優(yōu)化算法獲得100組優(yōu)良性能的長(zhǎng)度為4092的擴(kuò)頻碼；針對(duì)L頻段GNSS信號(hào)中心頻點(diǎn)重疊嚴(yán)重問(wèn)題，以擴(kuò)頻碼的相關(guān)特性為基礎(chǔ)提出GNSS信號(hào)擴(kuò)頻碼兼容評(píng)估概念，給出評(píng)估參數(shù)，建立擴(kuò)頻碼兼容分析的數(shù)學(xué)模型和接收機(jī)模型，并對(duì)GNSS信號(hào)的擴(kuò)頻碼進(jìn)行兼容評(píng)估。 本文研究的創(chuàng)新點(diǎn)主要體現(xiàn)在以下方面： （1）采用通用評(píng)估方法，對(duì)L、C、S頻段GNSS系統(tǒng)內(nèi)和系統(tǒng)間信號(hào)進(jìn)行兼容評(píng)估；對(duì)L、C、S頻段GNSS信號(hào)與所有相鄰頻段射頻信號(hào)進(jìn)行干擾評(píng)估。 （2）采用GNSS信號(hào)新型調(diào)制波形MSK-BCS和GBOC分析其在C頻段和S頻段的兼容性能表現(xiàn)，結(jié)果表明兼容性能有較大改善。 （3）提出一種新的擴(kuò)頻碼生成方法，利用擴(kuò)頻碼優(yōu)化快速算法，得到100組長(zhǎng)度為4092的擴(kuò)頻碼，其自相關(guān)性能明顯優(yōu)于同長(zhǎng)度的Galileo E1OS信號(hào)擴(kuò)頻碼，互相關(guān)性能與之相當(dāng)；提出擴(kuò)頻碼兼容評(píng)估概念，使得兼容評(píng)估結(jié)果更加全面完善。
[Abstract]:The establishment of the Global Positioning System (GPS) has brought great changes to the navigation, positioning and time-service technology of the world. Russia, Europe and China have also successively developed their own independent L-band Global Navigation Satellite System (GNSS). Compared with the L-band GNSS signal, the C-band signal has the advantages of anti-ionosphere effect and good anti-multipath performance, can provide more secure service performance to important sectors and industries such as aviation, financial and electric power with high signal quality, and the advantages of the S-band navigation service and other mobile and wireless service integration on the frequency band also cause the development and the construction of the S-band GNSS in the countries, and the coexistence of a plurality of navigation satellite system signals in the future C and S frequency band can not be ignored, and the interference of the radio-frequency signals on the frequency bands is inevitable, Therefore, the research on the compatibility of multi-band GNSS signals is of great significance to the construction and development of L, C and S-band navigation satellite systems. On the basis of the research contents of the "Research on GNSS-compatible Interoperability and New Signal System" and the special subject "Study on the Compatibility of the GNSS L/ S/ C-band" of the 863 subject project, the compatibility of the L, C and S frequency band GNSS signals is analyzed and verified in a comprehensive way, and the compatibility analysis technology of the GNSS signal and the out-of-band radio frequency signal is improved. In this paper, the design technique of GNSS signal modulation and spreading code is deeply studied, the influence of the modulated signal on the compatibility is analyzed, and the new design method of spreading code and the concept of the compatibility of spread spectrum code are put forward. The content of this paper is mainly divided into the following four parties: (1) The model and method of GNSS signal compatibility evaluation are analyzed comprehensively, and the compatibility evaluation based on the spectral separation coefficient (SSC) and the code tracking spectrum sensitivity coefficient (CT _ SSC) is respectively constructed. The method for estimating the compatibility of the GNSS signals of the L, C and S frequency bands is established by using the estimation model, and the compatibility of each frequency band is calculated by the simulation, and the result is Line assessment. (2) Analysis of interference characteristics of L, C, S-band GNSS signals and adjacent radio-frequency signals, model and method for determining interference assessment, and interference assessment, including interference assessment of L-band GNSS signals and radio astronomy (RA); C-band GNSS Signal and RA, and the interference assessment of the Microwave Landing System (MLS); S-band GNSS signals and Globalstar systems, Fixed Service (FS), and Worldwide Interoperability for Microwave Access (WiMAX) (3) The waveform modulation of the GNSS signal is analyzed, and the compatibility of the modulation waveform with the minimum frequency shift keying and the binary code symbol (MSK-BCS) in the C-band is better than that of the conventional navigation signal, and the general binary offset carrier modulation is adopted in the S-band. Carrier, GBOC) modulated waveform, compatible and (4) generating a 10230-length spreading code sequence corresponding to the spreading code parity and the odd-even self-correlation performance of the GPS L1C signal based on the Weil sequence, proposing a novel spreading code generation method, and obtaining the length of 100 sets of excellent performance by an optimization algorithm, A spread-spectrum code of 4092 is proposed. In order to solve the serious problem of the central frequency point of the GNSS signal in the L-band, the concept of the compatibility evaluation of the spread-spectrum code of the GNSS signal is put forward based on the correlation characteristic of the spread-spectrum code, the evaluation parameters are given, the mathematical model and the receiver model for the compatibility analysis of the spread-spectrum code are set up, and the GNSS signal is A compatible evaluation of spreading codes. The new point is mainly reflected in the following aspects: (1) The general evaluation method is adopted to carry out the compatibility evaluation on the signals between the L, C and S frequency band GNSS systems and the system; and the GNSS signals of the L, C and S frequency band and all the phases (2) The compatibility between the C-band and the S-band is analyzed by using the new modulation waveform MSK-BCS and GBOC of the GNSS signal. The results show that the compatibility can be improved greatly. (3) A new method of spreading code is proposed, and the spreading code is optimized by using the spreading code to obtain the spreading code with the length of 4092. The self-correlation performance is better than that of the same length of the Galileo E1OS signal spreading code and the cross correlation. to be comparable to it; to propose a spread-spectrum-code-compatible evaluation
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN96.1
本文編號(hào)：2431552
[Abstract]:The establishment of the Global Positioning System (GPS) has brought great changes to the navigation, positioning and time-service technology of the world. Russia, Europe and China have also successively developed their own independent L-band Global Navigation Satellite System (GNSS). Compared with the L-band GNSS signal, the C-band signal has the advantages of anti-ionosphere effect and good anti-multipath performance, can provide more secure service performance to important sectors and industries such as aviation, financial and electric power with high signal quality, and the advantages of the S-band navigation service and other mobile and wireless service integration on the frequency band also cause the development and the construction of the S-band GNSS in the countries, and the coexistence of a plurality of navigation satellite system signals in the future C and S frequency band can not be ignored, and the interference of the radio-frequency signals on the frequency bands is inevitable, Therefore, the research on the compatibility of multi-band GNSS signals is of great significance to the construction and development of L, C and S-band navigation satellite systems. On the basis of the research contents of the "Research on GNSS-compatible Interoperability and New Signal System" and the special subject "Study on the Compatibility of the GNSS L/ S/ C-band" of the 863 subject project, the compatibility of the L, C and S frequency band GNSS signals is analyzed and verified in a comprehensive way, and the compatibility analysis technology of the GNSS signal and the out-of-band radio frequency signal is improved. In this paper, the design technique of GNSS signal modulation and spreading code is deeply studied, the influence of the modulated signal on the compatibility is analyzed, and the new design method of spreading code and the concept of the compatibility of spread spectrum code are put forward. The content of this paper is mainly divided into the following four parties: (1) The model and method of GNSS signal compatibility evaluation are analyzed comprehensively, and the compatibility evaluation based on the spectral separation coefficient (SSC) and the code tracking spectrum sensitivity coefficient (CT _ SSC) is respectively constructed. The method for estimating the compatibility of the GNSS signals of the L, C and S frequency bands is established by using the estimation model, and the compatibility of each frequency band is calculated by the simulation, and the result is Line assessment. (2) Analysis of interference characteristics of L, C, S-band GNSS signals and adjacent radio-frequency signals, model and method for determining interference assessment, and interference assessment, including interference assessment of L-band GNSS signals and radio astronomy (RA); C-band GNSS Signal and RA, and the interference assessment of the Microwave Landing System (MLS); S-band GNSS signals and Globalstar systems, Fixed Service (FS), and Worldwide Interoperability for Microwave Access (WiMAX) (3) The waveform modulation of the GNSS signal is analyzed, and the compatibility of the modulation waveform with the minimum frequency shift keying and the binary code symbol (MSK-BCS) in the C-band is better than that of the conventional navigation signal, and the general binary offset carrier modulation is adopted in the S-band. Carrier, GBOC) modulated waveform, compatible and (4) generating a 10230-length spreading code sequence corresponding to the spreading code parity and the odd-even self-correlation performance of the GPS L1C signal based on the Weil sequence, proposing a novel spreading code generation method, and obtaining the length of 100 sets of excellent performance by an optimization algorithm, A spread-spectrum code of 4092 is proposed. In order to solve the serious problem of the central frequency point of the GNSS signal in the L-band, the concept of the compatibility evaluation of the spread-spectrum code of the GNSS signal is put forward based on the correlation characteristic of the spread-spectrum code, the evaluation parameters are given, the mathematical model and the receiver model for the compatibility analysis of the spread-spectrum code are set up, and the GNSS signal is A compatible evaluation of spreading codes. The new point is mainly reflected in the following aspects: (1) The general evaluation method is adopted to carry out the compatibility evaluation on the signals between the L, C and S frequency band GNSS systems and the system; and the GNSS signals of the L, C and S frequency band and all the phases (2) The compatibility between the C-band and the S-band is analyzed by using the new modulation waveform MSK-BCS and GBOC of the GNSS signal. The results show that the compatibility can be improved greatly. (3) A new method of spreading code is proposed, and the spreading code is optimized by using the spreading code to obtain the spreading code with the length of 4092. The self-correlation performance is better than that of the same length of the Galileo E1OS signal spreading code and the cross correlation. to be comparable to it; to propose a spread-spectrum-code-compatible evaluation
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN96.1
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