【摘要】：針對GPS最優(yōu)干擾信號評估方法欠缺的問題,提出了利用接收機(jī)誤碼率判斷最優(yōu)干擾信號的方法;通過對衛(wèi)星導(dǎo)航接收機(jī)工作原理的研究,建立了衛(wèi)星導(dǎo)航接收機(jī)模型;通過接收機(jī)不同模塊對導(dǎo)航信號處理過程的研究,建立了基于中頻信號的誤碼率模型;利用仿真工具模擬不同干擾信號,研究不同干擾環(huán)境下接收機(jī)的誤碼率;通過改變干擾信號功率得到誤碼率與干信比的關(guān)系曲線,比較不同干擾信號同干信比下接收機(jī)的誤碼率,得到最優(yōu)干擾信號;通過實(shí)驗(yàn)驗(yàn)證,在接收機(jī)干信比允許范圍內(nèi),相同干擾信號功率下,偽碼相關(guān)干擾信號干擾效果最優(yōu),為衛(wèi)星導(dǎo)航信號干擾設(shè)備的研發(fā)及設(shè)計提供了依據(jù)。
[Abstract]:In order to solve the problem of lack of GPS optimal interference signal evaluation method, a method of judging the optimal interference signal by using the bit error rate of the receiver is proposed, and the model of the satellite navigation receiver is established by studying the working principle of the satellite navigation receiver. Through the research of navigation signal processing process in different modules of the receiver, the bit error rate model based on intermediate frequency signal is established, and the bit error rate (BER) of the receiver in different interference environment is studied by using simulation tools to simulate different interference signals. By changing the power of the interference signal, the relationship curve between the bit error rate and the dry signal ratio is obtained, and the optimal interference signal is obtained by comparing the bit error rate of the receiver under the same interference signal ratio. The experimental results show that the pseudo-code related interference signal has the best interference effect under the same interference signal power within the allowable range of receiver dry-to-signal ratio, which provides the basis for the research and design of satellite navigation signal interference equipment.
【作者單位】： 北京信息科技大學(xué)高動態(tài)導(dǎo)航技術(shù)北京市重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金(61261160497) 十二五預(yù)先研究項目(9071223301)
【分類號】：P228.4
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本文編號：2490604