codes which consider accidental eccentricity in any case,it is not very strict in our codes to consider accidental eccentricity under special conditions.

In this paper,dynamic analysis are performed on regular structures with regard of accidental eccentricity.

The accidental eccentricity is considered for regular structures and ignored for irregular structures in seismic design according to the Chinese codes,while it is considered for both regular structures and irregular structures according to some codes such as UBC,FEMA302s,etc.

the authors change the 2-D plane problem of fullrange velocity-yaw angle calibration technique into that of two curve lines.

In this paper, from the view of engineering application, under the condition that three control points formed an isosceles triangle and only the error of image coordinates was considered, the influence of yaw angle to the robustness of P3P pose estimation method was developed.

Since the operating principle of SAR is based on the knowledge of relative motion between radar and target, the yaw angle error degrades the image greatly.

The preliminary result has suggested that the rolling angle and yawing angle are steady in the test with control law.

This paper analyzes the ground velocity and crab angle emerged while plane flies,and gives out the value of ground velocity and crab angle of the radar with different beams number under the Doppler effect,and compares error estimation of the ground velocity and crab angle.