白炽灯色温测量装置电路设计

介绍利用单片单板机接口电路完成对６Ｖ、３０Ｗ白炽灯光源与其对应的标准白炽灯光源的色温比对标定工作。     

高精度光栅干涉测量技术及仪器

在超精密测量和控制技术中，对测量精度提出了越来越高的要求，如尺寸精度１ｎｍ和角度０．００１。由于光栅具有精度高、抗干扰能力强、寿命长和价格便宜等优点，最近几年光栅干涉测量技术被广泛研究和使用。本文简单介绍几种在超精密测量和制造过程中常用的微纳米光栅干涉测量技术。     

双温双压法湿度测量不确定度的综合评定

基于双温双压法的湿度发生过程受到温度、握力、饱和度、增强因子等多种因素的影响，如何解决各参数之间的耦合问题，并将所有因素引入湿度测量不确定度评定模型是提高湿度测量准确度的重要方法。详细分析了增强凶子和饱和器的饱和度对实验舱湿度的影响，提出一种完整的评定模型及解算方法，并通过实例说明该模型的应用及其对评定结果的影响。     

提高软波导抗力学性能的方法研究

针对星载天线馈线用软波导,文章介绍了软波导的用途、材料种类,提出了软波导在规格选用和安装过程中提高抗力学性能的方法,并通过实例介绍了一种在振动激励环境下减小软波导应力水平、提高软波导可靠性的有效措施.     

脉冲分流器的发展现状研究CSCD

脉冲电流的准确可靠测量在国防军工计量领域有着极其重要的科学意义与应用价值,脉冲分流器是脉冲电流测试中常用的信号转换装置。从脉冲分流器的原理出发,分析各国脉冲分流器研制的现状。围绕其结构开展研究,对脉冲分流器进行分类,总结出不同结构和材料分流器的测量范围、准确度等特性。研究结果为可为脉冲分流器的发展方向、今后提升脉冲分流器的测量准确度提供参考。     

脉冲信号快沿计测中的问题

对周期性脉冲信号的频谱进行了简要分析。论述了脉冲信号快沿计测中的问题，讨论了用通用示波器计测脉冲信号时，被测信号的最高频率fM、前沿tr与示波器频带宽度人的关系图和计算公式，讨论了正确选用示波器探头及输入耦合方式．提出了脉冲信号快沿计测中应注意的几个问题。     

基于RISC芯片的32位嵌入式基本系统的设计和调试

基于ＲＩＳＣ芯片的３２位嵌入式基本系统的研究和设计是当前嵌入式星载计算机研制方面的一个重要课题，着重介绍了该ＲＩＳＣ基本系统的设计特点以及所使用的构思新颖的调试方法等两方面的研究情况。     

Fast coating analysis and modeling for RCS reduction of aircraft

In order to fast analyze the aircraft Radar Cross Section(RCS) and accurately reduce it with Radar Absorbing Materials(RAM), a comprehensive analysis method based on Higher-Order Method of Moments(HOMOM), termed Locally Coating Method(LCM), is proposed in this paper. There are two steps to fast analyze coatings for RCS reduction in this method: analyze the RCS of various parts before coating the aircraft; model a coating over the aircraft and analyze the wave absorbing effect of it. The aircraft RCS is calculated as a whole but analyzed in various parts by LCM, and thus the RCS contribution of different parts can be compared without disturbing the current continuity. A model expansion algorithm is also presented in LCM to model absorption coatings on specified aircraft parts for later stage RCS calculation of the coated aircraft.     

Effect of surface roughness on microwave brightness temperature from lunar surface: Numerical analysis with a hybrid method

A hybrid method, combining the radiative transfer theory and the method of moments (MoM), is proposed to study the potential effect of the lunar surface roughness on the microwave brightness temperature. The total upward emission reaching the lunar surface from below media is calculated by the radiative transfer theory, and then the brightness temperature is obtained by weighting the bidirectional transmission coefficients which is computed using the MoM. The method is validated by both flat and rough surface models with analytic solutions. With the hybrid method, brightness temperatures from simulated lunar model are calculated and compared to those from a flat layered model. The comparisons show that the effect of rough surface on brightness temperature cannot be ignored and also depends on many other factors, such as observation angle and polarizations. For vertical polarization, an optimal observation angle may exist to reduce the effect of surface roughness. These results indicate that the knowledge of lunar surface roughness is important in microwave remote sensing to the Moon and may probably provide a guide to lunar projects in future.     

一种测量氦氖激光器功率的新方法

介绍利用照度计测量氦氖激光器功率的新方法。