高重复率SLR数据预处理方法的实现

Realization of the method of data post-processing for high repetition rate SLR

千次重复频率SLR技术主要优势是观测数据量大,从而得到高精度测量结果,相比低重复频率(小于10Hz)测距资料,kHz数据量有近百倍的增加,因而快速、有效对每次每圈卫星kHz资料处理是高重复率激光测距重要内容,以满足ILRS对测距数据及时处理和发送的要求。通过采用均匀选取数据的点图方式,加速数据点屏幕显示;采用Visual C++与Fortran混合编程思想,充分利用Visual C++可视化操作和Fortran高效运算能力,实现了一种大数量高效预处理方法。该方法已在上海天文台等高重复率激光测距数据处理中得到很好应用。

Large mounts of measuring data and high precision measuring results are the major advantage for high repetition SLR.The method of efficient post-processing is the guarantee of measuring data timely processed and sent to International laser ranging data processing center.Through plotting the range residual as the even choosing way in order to accelerate data points display on the screen;adopting Visual C＋＋ and Fortran mixed programming idea and making full of the visualization of Visual C＋＋ and the Fortran ability of efficient numerical calculation,a method of efficient post-processing for large mounts of measuring data is realized and has applied to the high repetition rate laser ranging at Shanghai Observatory.The results show that compared with the method of post-processing developed by Visual Basic programming tool at low repetition rate laser ranging,for the above post-processing method the processing efficiency is increased and the requirements of data timely processed and sent are also fulfilled.