Analysis of Multipath Effect on the Antennas of CORS Receivers

Though state-of-the-art Trimble dual-frequency receivers are employed in Continuously Operating Reference Stations (CORS) in China [1], the accuracy of CORS coordinate are affected by multipath, receiver noise, etc., while multipath is generally considered as the main contributor. To make a wisely choice on receivers and antennas in the construction of CORS, Trimble NetR5 with TRM55971.00 antenna and Trimble R8 Model 2 with TRM60158.00 antenna, which are common used, are selected to making a comparison in terms of multipath effect. The same data is calculated by TEQC for the sake of validating the algorithm this paper used. The answer shows that the multipath effect of Trimble NetR5 is better than R8 Model 2 about 12 % in the same place in adjacent days. What’s more, to ensure that Trimble NetR5 has a stable performance, the multipath effect time series of an IGS station is calculated.