波程差

针对无人机载SAR的特点，提出了基于特显点波程差的运动补偿方法，从方位向压缩原理入手，利用插值可以比较精确的补偿各回波的相位误差。

For UAV SAR , a motion compensation method based on wave path difference of significant point were proposed , this method starting from the principle of azimuth compression , can compensate echo phase error accurately by Interpolation .

发现行波效应特别是改变波程差的行波效应对结构的影响相当大，这也是工程应用中一个必须考虑的问题。

It is showed that seismic wave , especially the wave effect on path-difference lagging behind seismic inspirit has important influence on the structure . It is also a problem which must be confronted with in the project application .

以正弦波中多点异相位描述行波效应为基础，结合天津某级地震波，通过改变地震波输入波程差的滞后和输入方向的改变来模拟行波效应。

Based on depicting traveling wave with multi-point sine wave with different-phase , combining with Tianjin a certain degree earthquake , we imitate the traveling wave effect with inputting the path-difference lagging behind seismic inspirit and different direction of the wave .