摘要
MBOC(6,1,1/11)调制是Compass系统与GPS和Galileo系统互操作的信号调制方式。文章采用FPGA实现了MBOC的数字中频调制,通过将FPGA实现的数据与Matlab仿真数据做比对,分析了由于量化带来的信号波形的幅度、功率谱密度和自相关函数等方面的误差。结果表明,采用14位量化时带来的误差很小,可以满足导航信号的设计要求。
MBOC（6,1, 1/11 ）modulation is the modulation type that Compass system cooperates with GPS system and Galileo system. The MBOC digital IF modulation is implemented on FPGA, the results between implement ion by FPGA and simulation by Matlab were analyzed, the errors on amplitude of signal waveforms,power spectrum density and autocorrelation due to quantization are analyzed, the results show the errors is small enough to satisfy the designing requests of navigation signals.
出处
《空间电子技术》
2010年第3期32-35,共4页
Space Electronic Technology
