无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2011年
12期
23-25
,共3页
CBOC%信号处理%降采样%复杂度
CBOC%信號處理%降採樣%複雜度
CBOC%신호처리%강채양%복잡도
CBOC%signal processing%downsampling%complexity
为了降低信号捕获跟踪运算量，针对Galileo信号CBOC调制提出了一种新的CBOC信号处理中的二次采样算法。分析了CBOC信号调制方式及功率谱密度，介绍了CBOC信号二次采样算法，提出了CBOC信号处理二次采样方法的处理模型。仿真结果表明，CBOC信号处理中的二次采样算法可以实现信号的CBOC解调，降低了运算量并简化了Galileo接收机的捕获跟踪设计。
為瞭降低信號捕穫跟蹤運算量，針對Galileo信號CBOC調製提齣瞭一種新的CBOC信號處理中的二次採樣算法。分析瞭CBOC信號調製方式及功率譜密度，介紹瞭CBOC信號二次採樣算法，提齣瞭CBOC信號處理二次採樣方法的處理模型。倣真結果錶明，CBOC信號處理中的二次採樣算法可以實現信號的CBOC解調，降低瞭運算量併簡化瞭Galileo接收機的捕穫跟蹤設計。
위료강저신호포획근종운산량，침대Galileo신호CBOC조제제출료일충신적CBOC신호처리중적이차채양산법。분석료CBOC신호조제방식급공솔보밀도，개소료CBOC신호이차채양산법，제출료CBOC신호처리이차채양방법적처리모형。방진결과표명，CBOC신호처리중적이차채양산법가이실현신호적CBOC해조，강저료운산량병간화료Galileo접수궤적포획근종설계。
In order to reduce the computational amount of signal acquisition and tracking operations for Galileo receiver, a new downsampling method for CBOC signal processing is proposed. The CBOC signal modulation and power spectral density is analyzed, and the downsampling method in CBOC signal processing is presented, then the signal processing model of downsampling method is proposed. The simulation results show that the CBOC signal is demodulated after using the downsampling method. The computational amount and the design complexity are reduced using downsampling method in CBOC signal processing.
