在许多红外系统中,探测器都可在由几百千赫到几赫这样宽的带宽中使用。在低频时,系统特性也许不受探测器探测度的限制,而是受过低频噪声的限制。这可由几种情况产生。最通常的就是振动、温度起伏和背景光子通量的调制。在热成象系统中,这种低频噪声会引起图象亮度闪烁,从而降低了系统的性能。作者所进行的工作大部分与这些 In many infrared systems, the detector can be used over a wide bandwidth ranging from a few hundred kilohertz to several hertz. At low frequencies, system characteristics may not be limited by detector probing, but rather by low frequency noise. This can arise from several situations. The most common is the vibration, temperature fluctuations and background photon flux modulation. In thermal imaging systems, this low frequency noise causes the image to flicker, reducing system performance. Most of the work done by the author is with these