Research Status and Trend of Mitigating Multipath Effects Technology for GPS Receiver
Zhixian Zhang · Telecommunication Engineering · 2011
As the most prominent error source of GPS receiver,multipath causes the deterioration of the positioning precision and results in the impairment of the GPS system performance.First,the influence of multipath effects and the model of multipath error are analysed.Then,the existing methods of mitigating multipath effects are summarized and assorted two categories,including the time-domain processing and frequency-domain processing technology.And then,several novel methods for improving the performance of GPS receiver are discussed by means of employing a modified Rake receiver structure in GPS receiver.Their merits and demerits are respectively shown.Finally,further research directions in this area are also pointed out.