【摘要】 由于GPS观测方法在有源性、点观测、数据成分、数据剔除、数据预处理、比较基准、基础数据的惟一性等方面,与伸缩仪、水平摆倾斜仪等形变观测方法存在相当大的差异,为了了解GPS测量的特性,选择固体潮为观测对象,比较了GPS与伸缩仪等形变观测仪的异同。从延庆、东三旗、十三陵等台相关设备实测结果来看,GPS观测到的固体潮在形态上与理论值和伸缩仪等设备观测结果十分相似,但幅度要大得多,垂直分量最大日幅差接近100mm。更多还原

【Abstract】 As the GPS method is different from deformation measuring methods with extensometer and horizontal pendulum tiltmeter at the aspect of having source, point observation, data composition, data deleting, data preprocessing, comparing datum,the sole basic data and so on. In order to understand the particularity of GPS survey, taking earth tide as the surveying object, GPS is compared with the convention deformation measuring methods here. The results at YANQ, DSQI, BJSH and other stations show that the earth tide surveyed by GPS is similar to the theoretical value and the data observeed by conventional deformation measuring instruments such as extensometer, but the amplitude of GPS result is bigger than others, as the max amplitude difference in one day of vertical-component can achieve 100 mm.更多还原