本文選題：北斗衛(wèi)星導(dǎo)航系統(tǒng) + 信號(hào)結(jié)構(gòu)　； 參考：《計(jì)算機(jī)應(yīng)用研究》2014年02期

【摘要】：在介紹近期公布的北斗衛(wèi)星導(dǎo)航系統(tǒng)空間信號(hào)接口控制文件(interface control document)中B1頻點(diǎn)QPSK(quadrature phase shift keying,正交相移鍵控)調(diào)制信號(hào)及測(cè)距碼構(gòu)成的基礎(chǔ)上,針對(duì)窄帶干擾對(duì)衛(wèi)星導(dǎo)航信號(hào)性能影響問(wèn)題,通過(guò)建立衛(wèi)星導(dǎo)航直接序列擴(kuò)頻通信系統(tǒng)模型,對(duì)窄帶干擾下的北斗衛(wèi)星導(dǎo)航系統(tǒng)解擴(kuò)處理增益、相關(guān)解擴(kuò)處理變化規(guī)律、誤碼性能以及對(duì)導(dǎo)航信號(hào)等效載噪比的影響進(jìn)行了分析和數(shù)字仿真。仿真結(jié)果表明,窄帶干擾下,導(dǎo)航信號(hào)性能降低程度與干擾實(shí)施位置、擴(kuò)頻碼特性、調(diào)制樣式等有關(guān),導(dǎo)航信號(hào)的性能改善需綜合考慮干擾特性、擴(kuò)頻特性及調(diào)制樣式等方面的影響。
[Abstract]:On the basis of introducing the composition of B1 frequency point QPSK (quadrature phase shift keying, orthogonal phase shift keying) modulation signal and range finder in the space signal interface control file (interface control document) of the Beidou satellite navigation system (Beidou satellite navigation system), the influence of narrowband interference on the performance of satellite navigation signal is established by establishing satellite navigation direct. The model of sequence spread spectrum communication system is used to analyze and simulate the influence of the despreading processing gain, the related despreading process, the error code performance and the influence of the equivalent carrier noise ratio of the navigation signal under the narrow band interference. The simulation results show that the performance reduction of the navigation signal and the interference implementation under the narrowband interference are shown. Location, the characteristics of the spread spectrum code, modulation mode and so on. The performance improvement of the navigation signal must take into account the interference characteristics, spread spectrum characteristics and modulation mode.
【作者單位】： 西北工業(yè)大學(xué)無(wú)人機(jī)特種技術(shù)重點(diǎn)實(shí)驗(yàn)室;91504部隊(duì);
【基金】：2010年西北工業(yè)大學(xué)科技創(chuàng)新基金資助項(xiàng)目(2010KJ0140) 2012年西北工業(yè)大學(xué)科技創(chuàng)新基金資助項(xiàng)目
【分類(lèi)號(hào)】：TN967.1

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相關(guān)期刊論文 前10條

1 朱永輝;白征東;過(guò)靜s，

本文編號(hào)：2095732