摘要
根据BKG中心的转换参数结果 ,采用FFT方法 ,计算分析了PZ 90GLONASS与ITRF间转换参数及其周期变化特性 。
By using FFT, this paper carries out the spectrum analysis of the transformation parameter results from the International GLONASS Experiment (IGEX) BKG Analysis Center. We found that the three rotation parameters all have primary periods 293.7 days, 685.3 days and 1 028.0 days with the amplitude being about 9.1～16.3mas. On the other hand, the remaining parameters also have the same long period fluctuations, but they aren't the dominant. The scale, translations Tx and Ty show more stable, their constant and bias terms could be neglected compared to the large rms. The fluctuation of translation Tz is similar to the rotations, and the bias term is evident, its first primary period is 293.7days. A set of transformation parameters based on our investigation are suggested.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2003年第6期740-744,共5页
Geomatics and Information Science of Wuhan University
基金
国家 8 63计划青年创新基金资助项目 ( 2 0 0 2AA7170 11)
国家 863计划重点资助项目 ( 2 0 0 2AA713 0 11)
