Investigation of height repeatability from GPS measurements

Abstract

We have studied the repeatability of height differences from GPS observations using Trimble SST and SSE receivers for the purpose of using GPS to control height stability of tide gauges. We measured height differences in small networks and of a zero-baseline. These tests showed that height errors up to 40 mm can occur and that the size of the errors depend on the processing strategy and the types of receivers used. These results may explain similar inconsistent results of high precision GPS heighting reported by other investigators using similar receiver types and processing procedures. -Authors Show more