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首页> 外文会议>17th International Conference on Photoelectronics and Night Vision Devices May 27-31, 2002 Moscow, Russia >Simulators of dynamic thermal fields for thermal imaging systems bench test
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Simulators of dynamic thermal fields for thermal imaging systems bench test

机译：动态热场仿真器，用于热成像系统台架测试

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摘要

The necessity of dynamic thermal field generation for submission on a tested system optical entrance arises for measurement of thermal imaging sensor characteristics in laboratory conditions, and also for complex bench tests of onboard electrooptical systems with the thermal imaging channel. Use of physical models of temperature contrast distribution of real phonotarget environment allows to reduce considerably volume of thermal imaging equipment tests in full-scaled conditions and to win essential economic benefit. The physical models of thermal contrasts on phonotarget environment objects is named usually as thermal simulators in creation and scaled-down test practice of air thermal imaging systems. The analysis has shown that there are used most often simulators with doublegrade thermal test images as the shaped target rod consisting of strips, warmed up to necessary temperature. The target rod lacks are small accuracy of stroke temperature maintenance and wide temperature scatter on stroke surfaces. Other simulator scheme is used also, at which the reflecting coverings of the necessary form are put on a transparent substrate placed in mouth of an absolutely black body model. For the given construction there are restrictions on overall dimensions the target rod. The mobile target is simulated by a relocatable thermal point initiated by laser pulses with recurrence frequency amount some of tens hertz.
机译：为了在实验室条件下测量热成像传感器的特性，以及对具有热成像通道的机载电光学系统进行复杂的台式测试，必须生成动态热场才能将其提交到经过测试的系统光学入口。使用真实目标目标环境的温度对比度分布的物理模型可以在充分规模的条件下大大减少热成像设备测试的数量，并赢得必不可少的经济利益。在空气热成像系统的创建和按比例缩小的测试实践中，目标目标环境对象上的热对比的物理模型通常被称为热模拟器。分析表明，最经常使用的是带有双级热测试图像的仿真器，该仿真器是由带材组成的成形目标杆，预热至所需温度。目标杆缺少冲程温度保持的精度低和冲程表面上的温度散布大。还使用其他模拟器方案，在该方案中，必要形式的反射覆盖物放在放置在绝对黑体模型的嘴中的透明基板上。对于给定的结构，目标杆的整体尺寸受到限制。通过可重定位的温度点来模拟移动目标，该温度点的重复频率为几十赫兹，由激光脉冲触发。

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