A Study on Multipath Effect of the GPS Antenna
|Keywords:||全球定位系統;多路徑效應;Global Posioning System, GPS;Multipath Effect|
The subject of this research is to study the multipath effect of GPS antenna on positioning. An algorithm based on GPS signal structure of dual-freqency and geometry of satellite-reflector-receiver to detect multipath of GPS antenna is presented. This algorithm is derived to be the index of multipath occurred and to be applied to assist editing cycle slips of carrier phase measurements. The developed algorithm is also adopted to analyze the multipath effect of GPS antenna on GPS static surveying. The designed experiments are consist of two parts: short baselines and long baselines. The hardware used in the project is dual-frequency GPS receivers and antenna. As for the software, the developed multipath detecting program and existing baseline computation programs are adopted. Thus, the main goals of this research are to evaluate the effect and feasibility of the developed algorithm, to study the multipath effect on GPS positioning, and to modify the specification of GPS survey.
|Appears in Collections:||Thesis|