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英国GEC-Marconi红外公司根据横向聚集的CdHgTe光电探测器列阵已经研制开发了一种传感器技术,列阵器件是安装在普通设计的CMOS多路传输集成电路上的。由于可以利用亚微米硅工艺技术,使得许多功能可以高度集成在探测器上,从而大大简化整个系统的设计。本文介绍在先进的红外搜索和跟踪、监视、高性能的成像应用方面有特殊用途的一种普通结构器件。这些应用要求器件有尽可能高的性能,因此器件是根据时间延迟和积分(TDI)来增强信噪比,利用探测器元件具有足够的余量、可将有缺陷的元件筛选掉,来保证最终给出的列阵器件完好无损,没有信号丢失。这些探测器完全具有可变的积分周期控制,可选择的积分电容器,以及在低通量红外辐射时增强信噪比的能力。总的功耗很低,使得探测器适合于机械致冷。器件的总体结构是根据若干单元器件而设计的,容易适应广范围的外形结构。单元电容器估计在设计范围之内,可通过调节使它能接纳所需的信号电平。采用这种方法,TDI的元件数和TDI的波道数能根据最终应用的要求而相互匹配。总体结构对长波和中波两种探测器都适用。TDI波道一般由8或10只元件组成,已经证实其波道超过700个。从一些初样探测器获得的结果现已作了介绍。
British GEC-Marconi Infrared Corporation has developed a sensor technology based on laterally clustered CdHgTe photodetector arrays, which are mounted on commonly designed CMOS multiplexed integrated circuits. The ability to utilize submicron silicon process technology allows many features to be highly integrated on the detector, greatly simplifying the design of the entire system. This article describes a common structural device that has special uses for advanced infrared search and tracking, monitoring, and high performance imaging applications. These applications require the highest possible performance of the device, so the device is based on time delay and integration (TDI) to enhance the signal to noise ratio, the use of detector components have enough margin, the defective components can be filtered out to ensure the final The array devices given are undamaged and no signal is lost. These detectors are fully variable with integrated cycle control, optional integral capacitors, and the ability to enhance signal-to-noise ratio for low-flux infrared radiation. The total power consumption is very low, making the detector suitable for mechanical cooling. The overall structure of the device is based on a number of unit devices designed to easily adapt to a wide range of shape and structure. The unit capacitor is estimated to be within design limits and can be adjusted to accept the desired signal level. With this method, the number of TDI components and the number of TDI channels can be matched to each other according to the requirements of the final application. The overall structure of both long wave and medium wave detectors are applicable. TDI channel usually consists of 8 or 10 components, has confirmed its channel more than 700. The results obtained from some of the original detectors are now described.