微桥电阻的辐射特性研究

随着微机械加工技术的发展，电阻阵列成为一种最具发展潜力的动态红外景象产生器。在半实物（HWIL）仿真系统中，它被用来对红外摄像机、导弹寻的器以及各种红外探测系统的实时性能进行测试和评估。电阻阵列采用电阻元作为其微辐射元，当电流流过时。电阻元产生热量进而产生红外辐射。通过控制流过每个电阻元的电流就可以控制电阻的温度，从而达到显示红外图像的目的。介绍了利用表面微机械加工技术研制的电阻阵列基本组成单元——微桥电阻的辐射特性．主要包括：微桥电阻介质膜红外光谱辐射率、等效黑体辐射温度以及温度分辨率等，并通过分析得出该微桥电阻具有低功耗、高等效黑体辐射温度的特点。能够满足中波和长波红外目标模拟的需要。

Radiation characteristics of suspend resistor

With the development of the technology of micromechanical processing, the Resistor Array becomes one of the most promising IR scene generators. In the Hardware-in-the-loop （HWIL） simulation system, it is usually used to test the real-time performance of IR camera, seeker and other IR detector systems. Resistor Array IR scene generator adopts resistors as their microemitters. When current passes each resistor, it is heated and produces IR radiation. By adjusting the current of each resistor, the temperature of the resistor can be controlled, and then the IR scene is generated. Radiation characteristics （including IR emissivity of dielectric film, effective blackbody temperature, temperature resolution） of suspend resistor the basic celI of Resistor Array dynamic IR scene generator are introduced.Our analysess how that the suspend resistor has the characteristics of low power dissipation and high effective blackbody temperature, which can meet the simulation requirement of MWIR and LWlR radiation in hardwarein -the -loop simulation system.