由于已研制成优质的热电探测器阵列,故已能用来发展热与角分辨率都很高的非致冷成象系统。基本要求是高性能,所以对信号处理部分极注意。热电效应是由温度变化而造成的一种自发极化变化。探测器犹如一个小电容器,当在开路情况下,由于温度变化其电极上聚积的电荷也随之变动,因而在其两端形成电压。成象系统中一个探测器理想的频率响应在上 Since it has been developed into a high-quality pyroelectric detector array, it has been used to develop non-refrigeration imaging systems with high thermal and angular resolution. The basic requirement is high performance, so very much attention to the signal processing part. The thermoelectric effect is a spontaneous polarization change caused by temperature changes. The detector acts like a small capacitor, and when it is open, the charge that accumulates on its electrodes varies with temperature, creating a voltage across it. The ideal frequency response of a detector in the imaging system is above