本文選題：北斗衛(wèi)星導航系統(tǒng) + 信號結(jié)構(gòu)�。� 參考：《計算機應用研究》2014年02期

【摘要】：在介紹近期公布的北斗衛(wèi)星導航系統(tǒng)空間信號接口控制文件(interface control document)中B1頻點QPSK(quadrature phase shift keying,正交相移鍵控)調(diào)制信號及測距碼構(gòu)成的基礎上,針對窄帶干擾對衛(wèi)星導航信號性能影響問題,通過建立衛(wèi)星導航直接序列擴頻通信系統(tǒng)模型,對窄帶干擾下的北斗衛(wèi)星導航系統(tǒng)解擴處理增益、相關解擴處理變化規(guī)律、誤碼性能以及對導航信號等效載噪比的影響進行了分析和數(shù)字仿真。仿真結(jié)果表明,窄帶干擾下,導航信號性能降低程度與干擾實施位置、擴頻碼特性、調(diào)制樣式等有關,導航信號的性能改善需綜合考慮干擾特性、擴頻特性及調(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)大學無人機特種技術重點實驗室;91504部隊;
【基金】：2010年西北工業(yè)大學科技創(chuàng)新基金資助項目(2010KJ0140) 2012年西北工業(yè)大學科技創(chuàng)新基金資助項目
【分類號】：TN967.1

【參考文獻】

相關期刊論文 前2條

1 呂偉;朱建軍;;北斗衛(wèi)星導航系統(tǒng)發(fā)展綜述[J];地礦測繪;2007年03期

2 李志強,張北江,李廣俠;周期PN序列抗單頻干擾能力的分析[J];電子科技大學學報;2004年02期

【共引文獻】

相關期刊論文 前10條

1 朱永輝;白征東;過靜s，

本文編號：2095732