Not level antenna seat may affect the accuracy of measuring angle. In order to improve the tracking precision of the an?tenna, this paper researches the model of the not vertical azimuth axis causing measuring angle error, tilt angle and azimuth angle calculating. A correctional model of not level antenna is put forward, and verify its effectiveness through the model simulation.

There are influences coming form air dynamics in the process of projectile's flying.The motion equation of projectile is very complicated which is caused by the uncertain air dynamics' coefficients.As a result,this article puts forward a simplified model of trajectory equation through the following processes.Firstly,the air dynamics' variance is analyzed by the effect of air dynamics to projectile;secondly,the influences of air dynamics is researched to projectile in the process of flying.To demonstrate the effectiveness of the proposed model,it takes some type high artillery fire for an example to carry out simulation calculation.

Through the analysis of the effect of projectile flying time fitting errors to fire data in the basic firing table,the article puts forward the analytic expressions of firing errors which caused by errors of time fitting.Moreover,it analyzes the effect of flying time fitting errors to elevation and shooting direction errors that adopts five typical flight paths.Then,it advances the relations between fitting errors to fire data errors in the different flight paths shortcut,flight paths elevation,flight paths distance and target velocity,which prepares the evidences to ensure the projectile flying time fitting's precision.

In order to reproduce the actual battle scenes in real time,the 3D real-time battlefield scene has been built in this paper based on the theory of particle system,and the combination with OSG and MFC technology.According to the ballistic fire control solver parameters,this paper has simulated realistically the whole process of the shells from the bore to hit the target,including the smoke fire from muzzle at the time of artillery shells' colliding,the trajectory of artillery shells,explosions after artillery shells hitting the target.This 3D real-time scene rendering technology has successfully solved the conflict between realistic simulation of particle system and real-time nature,modified the traditional two-dimensional observation that make command and operations staffs getting immersive visual experiences.In the future information warfare,it will offer an important significance.

文章探讨了一种利用Matlab和System Generator联合设计宽带数字上变频器的实现方法。先利用Matlab自带的Fdatool工具生成数字变频器中滤波器所需要的系数,然后利用Xilinx的设计工具System Generator进行模块设计和仿真,最后将代码自动生成,加载到FPGA中进行验证。

In this paper,three-dimensional radar target information real-time display as the background,the key technologies of three-dimensional real-time scene simulation are researched under the OSG framework,including three-dimensional scenes’ organization and management,real-time display and update,interactive roaming and generated three-dimensional terrain.Then,the three-dimensional real-time scene simulation systems is designed with MFC,and used in the area of three-dimensional display for radar information with well effect.In the future information warfare environment,this will play an important application role.