应用天文研究室知识库

介绍了2011年中国科学院新疆天文台南山站GPS和25m VLBI天线的归心测量方案、局域三角测量网、高程控制网与靶标交会测量方法及资料解算。利用测量数据,首次建立了南山GPS与VLBI空间大地测量技术并置站本地连接参数,测量精度优于1mm。

In order to detect PS more effectively, a method that detects PS according to several PSstandard points is proposed in this paper. This method considers the stability as well as the strong characteristics of the PS scattering. In the original selection, the amplitude threshold is set according to the PS standard points. The amplitude dispersion threshold is also set according to them in the second selection. Both of the two thresholds do not need to be set manually, as they are hardly influenced by subjective factors. We conduct the PS detection experiments with 18TerraSAR-X images that cover Macao Peninsula. The result shows that the proposed method can detect PS in the SAR image more rapidly, effectively and reliably than traditional methods.