The variable relationships between the electromagnetic scattering characteristics of serrated steps and the number,serrate angle or the pitch angle against incoming direction of wave were studied in a series of radar cross section(RCS) testing.

The electromagnetic computation data under different pitch angles,azimuth angles and polarizations are processed using SAR imaging algorithm,and the varying relations between the target scattering characteristics and the pitch angle,azimuth angle and polarization,as well as the relations with different polarization channels for target scattering peaks,are studied.

The paper analyzed the correlation of pitch angle and roll angle,which were measured by magnetic head flying angle adjustment apparatus,and introduced a method of angle adjusting.

A new method is given at first to control the pitching angle and pitching velocity of the launched missiles in this paper,then,a mathematical model and a digital simulation program are set up to analyze the dynamic performance of the the missile ejection mechanism.

By taking into considerations of such aspects as geometry containing, the robot center of gravity (CG) and the influence of maximum pitching angle on the possible overturning of the roobt, the paper puts forwards the necessary condition of stairs for the robot to.

In the modal of computing elevation angle and azimuth angle of satellite,we ignore the impact of precession,nutation and pole shift in the process of coordinate system transformation due to their small effects.

First, the basic tracking laws of the user satellite s satellite-satellite antenna are deduced and according to several different conditions, the expressions for the azimuth angle and elevation angle of the satellite-satellite antenna are revised.

According to the data of air target elevation angle measured by optical measuring system,which includes the error of atmospheric refraction,the model of elevation angle correction is built,the process of error-correction model computing is introduced.