线列红外焦平面中几种相关采样法分析

THE EXPERIMENTAL COMPARISON OF SEVERAL CORRELATED SAMPLING METHODS IN LINEAR IR FPA

介绍了相关双采样法（ＣＤＳ）、四δ采样、差分平均法等方法对像元复位噪声（ＫＴＣ）的抑制作用，从理论上分析了这几种方法对输入噪声的影响．将这几种方法用于线列红外焦平面，并对不同方法对噪声改善的程度进行了实验比较．

Some correlated sampling techniques were introduced, auch as the correlated double sampling, quad δ sampling and differential averager, which are effective methods to reduce KTC noise in readout circuit due to the MOSFET transistor used for resetting the voltage on capacitance. Theoretically analyzed was the another advantage of these methods in attenuating the input noise including white noise and 1/ f noise, then those techniques were applied to linar infrared focal plane array (FPA). Results were analyzed and compared for different methods. Received 1998 02 10, revised 1998 07 20