磁转速表指针摆动的故障分析

就磁转速表活动系统的动态特性以及在附加交变力矩的作用下,指针摆动随转速变化的规律,从理论上进行了分析,并结合实际探讨了指针摆动的故障原因。     

自动化计量学大会展出的坐标测量机

介绍自动化计量学大会展出的坐标测量机及其结构,性能和使用范围。     

计算机在光栅和线纹检测中的应用

介绍了一个将PC机和8031单片机组成的计算机系统应用于光栅尺、线纹尺检测的实例。     

多媒体“金属切削刀具”CAI课件的开发实践

本文通过多媒体“金属切削刀具”ＣＡＩ课件的开发实践,论述了ＣＡＩ课件在教学中的重要作用,阐述了ＣＡＩ课件的制作方法和具体实践过程。     

一个实用的WIN95启动界面

本文通过用简单的方法修改ＭＳＤＯＳ．ＳＹＳ和重新配置ＡＵＴＯＥＸＥＣ．ＢＡＴ文件。     

用面向对象技术编写科学运算类库

为了提高科学工程软件的开发效率,改善程序的可读性、易维护性,本文从面向对象的编程思路出发,介绍了利用VisualC＋十建立一种科学运算类库的基本思想和方法。     

STAP with medium PRF mode for non-side-looking airborne radar

Space-time adaptive processing (STAP) has been widely discussed for airborne radar systems to improve the system performance of detecting targets. This is especially true for airborne early warning (AEW) radar, which should find long-range and small radar cross section (RCS) targets such as the stealth aircraft and missiles. However, in existing airborne radar literature, STAP is mainly considered for clutter and jamming rejection in side-looking airborne radar (SLAR) applications. There have been fewer discussions on airborne radar with non-side-ways looking array radar (non-SLAR). The STAP of non-SLAR such as forward looking array radar is also very important and can not be avoided for airborne radar to detect targets in all directions. The STAP of the non-SLAR is studied here. A scheme has been proposed, which is processed by the way of STAP combined with multiple staggered medium pulse repetition frequencies (PRFs). We further study the selection of PRFs in order to make the scheme more available for non-SLAR radar. We analyze two typical non-SLAR cases, i.e., inclined-sideways looking array and forward looking array. We examine this scheme by comparing the performances of three processing systems under the criteria of range-velocity blind zone minimization. Computer simulation results show the multiple-PRFs STAP scheme is feasible for non-SLAR and can be applied to phased-array AEW radar systems     

HB-3000型布氏硬度计换向系统的改造

介绍了ＨＢ－３０００型布氏硬度计换向系统的改造方法及改造后硬度计的工作程序,并就改进效果进行了论述。     

UNLX系统下软件开发版本管理初探

在ＵＮＬＸ操作系统下开发软件,开发过程中容易出现版本管理的混乱,为解决此问题,应充分利用系统提供的ＲＣＳ或ＳＣＣＳ工具,结合ｓｈｅｌｌ程序,充分发挥版本管理的作用。     

Hale引理证明的修正

本文指出了著名的Ｈａｌｅ引理证明中的不足之处,并给以完善。