电阻阵列红外假目标变换弛豫时间研究

Research on Relaxation Time of a Resistor Array Infrared Decoy Transformation

为了获得电阻阵列红外假目标变换的弛豫时间,为提高图样变换速度提出解决思路,通过对不同电阻(丝)的升、降温特性测试和分析指出:常见的电阻中金属膜电阻的升、降温时间最短,时间在30s左右;2种康铜电阻丝的升、降温时间变化长于金属膜电阻,其中升温增长约22.4%,降温增长约43.9%。被釉电阻与陶瓷绕线电阻升、降温时间较长,均超过了100s;同一电阻,在不同加热电压下的升、降温时间基本一致;同一电阻其降温时间长于升温时间。实验结果表明:可通过选用质量小、比热容小的电阻及介质材料来降低电阻的升、降温时间,提高电阻元件阵列红外假目标显示屏图样变换速度。

In order to obtain the relaxation time of the resistor array infrared decoy transformation, and to settle an idea for improving transformation speed of patterns through testing and analyzing the temperature variety characteristics of different resistors, a conclusion is as follows. Among familiar resistors, metal- film resistor has the shortest relaxation time in increasing and decreasing temperature which is approxi- mately 30 s. Two kinds of constantan resistance wire＇s relaxation time are longer than Metal film resistor＇s, the time of increasing temperature extends about 22.4~, and the time of decreasing temperature extends about 43.9%, the relaxation time of increasing and decreasing temperature of glazed wire wound resistor and Ceramic wire wound resistor are relative longer, which more than 100 s. One resistor has about the same relaxation time under different voltages. The relaxation time of cooling is longer than that of temper- ature rise to the same resistor. To shorten the relaxation time of temperature variety and improve patterns ~ transformation speed, the resistor and the dielectric material must have small mass and heat capacity.