一種基于偽相關(guān)函數(shù)的CBOC信號跟蹤方法
發(fā)布時間:2018-08-27 05:57
【摘要】:針對下一代衛(wèi)星導(dǎo)航系統(tǒng)的設(shè)計逐漸完善,衛(wèi)星導(dǎo)航基帶信號處理對環(huán)路跟蹤靈敏度和抗多徑性能要求不斷提升的情況,本文基于Galileo E1頻點公開的CBOC信號,設(shè)計一種構(gòu)建CBOC信號偽相關(guān)函數(shù)(PCF)的偽碼跟蹤方法,并基于該方法,設(shè)計了相位鎖定環(huán)與延遲鎖定環(huán)路的跟蹤策略,實現(xiàn)了環(huán)路的高速鎖定和穩(wěn)定跟蹤.并通過仿真實驗驗證了該方法在靈敏度和有限帶寬下抗多徑兩分面提升了CBOC跟蹤環(huán)路抗多徑性能和跟蹤靈敏度,改善了跟蹤環(huán)路在復(fù)雜環(huán)境下的跟蹤性能.
[Abstract]:In order to improve the design of next generation satellite navigation system and improve the loop tracking sensitivity and anti-multipath performance of satellite navigation baseband signal processing, this paper based on the Galileo E1 frequency point open CBOC signal, A pseudo code tracking method based on pseudo correlation function (PCF) of CBOC signal is designed. Based on this method, the tracking strategies of phase locked loop and delay lock loop are designed, and the high speed locking and stable tracking of the loop are realized. The simulation results show that the method can improve the anti-multipath performance and tracking sensitivity of CBOC tracking loop under the condition of sensitivity and limited bandwidth, and improve the tracking performance of the tracking loop in complex environment.
【作者單位】: 北京理工大學(xué)信息與電子學(xué)院;
【基金】:國家自然科學(xué)基金資助項目(61101128)
【分類號】:TN967.1
[Abstract]:In order to improve the design of next generation satellite navigation system and improve the loop tracking sensitivity and anti-multipath performance of satellite navigation baseband signal processing, this paper based on the Galileo E1 frequency point open CBOC signal, A pseudo code tracking method based on pseudo correlation function (PCF) of CBOC signal is designed. Based on this method, the tracking strategies of phase locked loop and delay lock loop are designed, and the high speed locking and stable tracking of the loop are realized. The simulation results show that the method can improve the anti-multipath performance and tracking sensitivity of CBOC tracking loop under the condition of sensitivity and limited bandwidth, and improve the tracking performance of the tracking loop in complex environment.
【作者單位】: 北京理工大學(xué)信息與電子學(xué)院;
【基金】:國家自然科學(xué)基金資助項目(61101128)
【分類號】:TN967.1
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