欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
基于多相关器的多径最大似然估计方法,通过对接收机信号与本地码的相关曲线进行多点采样,建立相关输出的模型,利用最大似然法估计直射信号与多径信号各个参数。采用等间距选取估计点以简化最大似然估计的思想,提出一种基于多相关器的新的多径估计方法,选取更为合理的多相关器采样点配置方案,使估计不受无效多径信号的干扰,并且联合处理同相和正交两个支路的输出,可以得到多径信号的延迟、幅度和载波相位的信息。仿真试验表明,在一定的信噪比下,采用本文的方法可以实现较为准确的多径估计。
英文摘要：
Muhicorrelator-based maximum likelihood estimation is one of the methods for multipath estimation, in which the correlation curve between received and local signals is sampled by a bank of correlators and the correlation outputs are obtained, then the parameters of direct and multipath signals is estimated by using maximum likelihood estimation. In this paper, a novel muhicorrelator-based GPS muhipath estimation method is proposed by uniformly deploying estimation points to simplify the maximum likelihood estimation. A proper configuration for the bank of correlators is advised to prevent the interference from ineffective multipath signals. By jointly processing the in-phase and quadrature outputs, the delay, amplitude, and carrier phase information of multipath signals can be calculated. Simulation tests demonstrate the validity of the method proposed in this paper.
同期刊论文项目
同项目期刊论文
期刊信息
位置：