【摘 要】
：
目前,BOC族调制信号在新一代卫星导航定位系统中广泛应用。为了解决导航信号接收机的宽带化、低采样率和低功耗的问题,对BOC调制导航信号进行稀疏性分析十分必要。结合压
【机 构】
：
北京卫星导航中心,北京,中国,100094
论文部分内容阅读
目前,BOC族调制信号在新一代卫星导航定位系统中广泛应用。为了解决导航信号接收机的宽带化、低采样率和低功耗的问题,对BOC调制导航信号进行稀疏性分析十分必要。结合压缩感知原理并在学习字典的框架下,提出了一种基于SL0改进型的ITNSL0稀疏分解算法。仿真结果表明,相比于传统的OMP算法,该方法对BOC调制导航信号的稀疏分解效果较好,在稀疏分解速度、重构精度和去噪特性上有明显提升,为减少接收机中导航信号同步捕获时间及提升后续信号处理增益等内容奠定了基础。
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