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首页> 外文会议>Infrared Imaging Systems: Design, Analysis, Modeling, and Testing XVII >Detector Integration Time Issues Associated with FLIR Performance
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Detector Integration Time Issues Associated with FLIR Performance

机译：与FLIR性能相关的检测器集成时间问题

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摘要

IR detector integration time is determined by a combination of the scene or target radiance, the noise of the sensor, and the sensor sensitivity. Typical LWIR detectors such as those used in most U.S. military systems can operate effectively with integration times in the microsecond region. MWIR detectors require much longer integration times (up to several milliseconds) under some conditions to achieve good Noise Equivalent Temperature Difference (NETD). Emerging 3rd Generation FLIR systems incorporate both MWIR and LWIR detectors. The category of sensors know as uncooled LWIR require thermal time constants, similar to integration time, in the millisecond range to achieve acceptable good NETD. These longer integration times and time constants would not limit performance in a purely static environment, but target or sensor motion can induce blurring under some circumstances. A variety of tasks and mission scenarios were analyzed to determine the integration time requirements for combinations of sensor platform movement and look angle. These were then compared to the typical integration times for MWIR and LWIR detectors to establish the suitability of each band for the functions considered.
机译：红外检测器的集成时间取决于场景或目标辐射，传感器的噪声以及传感器的灵敏度。典型的LWIR检测器（例如大多数美国军事系统中使用的检测器）可以在微秒范围内的积分时间下有效运行。在某些条件下，MWIR检测器需要更长的积分时间（长达几毫秒）才能获得良好的噪声等效温差（NETD）。新兴的第三代FLIR系统结合了MWIR和LWIR探测器。已知为非冷却LWIR的传感器类别需要类似于积分时间的热时间常数（以毫秒为单位），才能获得可接受的良好NETD。这些更长的积分时间和时间常数不会限制纯静态环境下的性能，但是在某些情况下目标或传感器的运动会引起模糊。分析了各种任务和任务方案，以确定传感器平台运动和视角组合的集成时间要求。然后将这些与MWIR和LWIR检测器的典型积分时间进行比较，以建立每个频带对所考虑功能的适用性。

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