| 区域CORS网坐标时间序列周期特征分析 |
| |
| 引用本文： | 黄焱,田林亚,孙腾科,马丙浩.区域CORS网坐标时间序列周期特征分析[J].测绘与空间地理信息,2015(9):139-141. |
| |
| 作者姓名： | 黄焱 田林亚 孙腾科 马丙浩 |
| |
| 作者单位： | 1. 青海省环境地质勘查局,青海西宁,810000;2. 河海大学地球科学与工程学院,江苏南京,210000 |
| |
| 摘 要： | 通过精密单点定位的方法获取了区域CORS网各基准站的坐标时间序列,并利用最大似然估计法和频谱分析法对其32个基准站坐标时间序列的周期特征进行了分析,获取了各基准站年周期、半年周期的振幅和相位值,以及各基准站的周期功率谱图。结果表明:GNSS基准站坐标时间序列不仅存在线性变化,还存在周期性变化,其中以U方向表征最为明显,与双差定位获得的坐标时间序列周期特性分析结果一致,说明以精密单点定位获取的GNSS基准站坐标时间序列是可靠的,可以用来分析基准站的变化特征。
|
| 关 键 词： | 区域CORS 精密单点定位 坐标时间序列 周期特性 |
Regional CORS Coordinates Time Series Cycle Characteristics Analysis |
| |
| Abstract: | For four years 32 evenly distributed GNSS station data of regional CORS processing, obtained the coordinate time series of each station by the method of PPP( precise point positioning) , then using the method of maximum likelihood estimate and spectrum a-nalysis to process the coordinate time series of 32 stations, obtained the amplitude of year and half-year cycle and phase value of each station, as well as power spectrum diagram.The results showed that:the coordinate time series of GNSS stations not only exist linear characteristics, but also cycle characteristics, each station has cycle change of year and half-year at N, E, U, and vertical di-rection has the most obvious year cycle characteristics, this is same as the results of double difference positioning, so the coordinate time series of GNSS stations by the method of PPP is reliable, they can use to analysis the change characteristics of GNSS station. |
| |
| Keywords: | regional CORS coordinates time series precise point positioning cycle characteristics |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
