本文關(guān)鍵詞： 衛(wèi)星導(dǎo)航 多址干擾 早遲坡度技術(shù) 雙差相關(guān)器技術(shù) 并行干擾對消　出處：《信號處理》2014年12期 　論文類型：期刊論文

【摘要】：偽碼跟蹤多相關(guān)器技術(shù)廣泛應(yīng)用于導(dǎo)航接收機抗多徑和導(dǎo)航信號質(zhì)量監(jiān)測。論文通過對比分析多徑和多址信號對導(dǎo)航信號相關(guān)峰畸變的影響,揭示了多相關(guān)器技術(shù)可用于多址干擾抑制。通過仿真分析了多址誤差隨期望接收信號與干擾信號功率差和載波多普勒頻率差的變化規(guī)律,并與傳統(tǒng)的并行多址干擾對消方法進行了對比。仿真結(jié)果表明當(dāng)多址干擾信號功率差小于10d B時,ELS和Double-delta與單級并行干擾對消方法的性能相當(dāng),但是實現(xiàn)復(fù)雜度大大降低。
[Abstract]:Pseudo-code tracking multi-correlator technology is widely used in navigation receiver anti-multipath and navigation signal quality monitoring. This paper analyzes the effect of multi-path and multi-access signal on the correlation peak distortion of navigation signal. The multiple correlator technique can be used to suppress multiple access interference. The variation of multiple access error with the power difference between the received signal and the interference signal and the carrier Doppler frequency difference is analyzed by simulation. The simulation results show that the power difference of the multiple access interference signal is less than 10dB. The performance of ELS and Double-delta is comparable to that of single stage parallel interference cancellation, but the implementation complexity is greatly reduced.
【作者單位】： 國防科技大學(xué)電子科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金(61403413)
【分類號】：TN96.1
【正文快照】： 1引言衛(wèi)星導(dǎo)航系統(tǒng)中的偽距測量受多種誤差因素的影響,傳統(tǒng)觀點認為多址干擾對衛(wèi)星導(dǎo)航系統(tǒng)的偽距測量影響不大。但當(dāng)某些衛(wèi)星信號遭遇嚴重衰減時,來自強信號的多址干擾將顯著影響到弱信號的捕獲和跟蹤[1-3];或者隨著衛(wèi)星運動多址干擾信號與期望信號的頻率變化至特定關(guān)系時多，

本文編號：1490918