发明授权
US06868110B2 Multipath and tracking error reduction method for spread-spectrum receivers
失效
用于扩频接收机的多路径和跟踪误差降低方法
- 专利标题: Multipath and tracking error reduction method for spread-spectrum receivers
- 专利标题(中): 用于扩频接收机的多路径和跟踪误差降低方法
-
申请号: US09728949申请日: 2000-12-01
-
公开(公告)号: US06868110B2公开(公告)日: 2005-03-15
- 发明人: Robert Eric Phelts , Per Enge
- 申请人: Robert Eric Phelts , Per Enge
- 申请人地址: US CA Stanford
- 专利权人: The Board of Trustees of the Leland Stanford Junior University
- 当前专利权人: The Board of Trustees of the Leland Stanford Junior University
- 当前专利权人地址: US CA Stanford
- 代理机构: Lumen Intellectual Property Services, Inc.
- 主分类号: G01S1/00
- IPC分类号: G01S1/00 ; H04B1/707 ; H04B1/7085 ; H04B1/711 ; H04B1/7115 ; H04L7/10 ; H04B1/713
摘要:
A multipath mitigation method consists of locating a multipath-invariant (MPI) point of an ideal autocorrelation function and measuring the distance between the MPI point and DLL. The same MPI point is located in a received correlation function, and the distance between the point and the DLL, now affected by multipath, is measured. The difference between the ideal distance and the actual distance is the code tracking error resulting from multipath. The error is subtracted from the computed pseudorange or used to control the DLL. The method can be used to reduce the effects of all types of tracking error sources, such as signal transmission failure or code noise.
公开/授权文献
信息查询