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首页> 外文会议>Infrared Technology and Applications XXXIII pt.2; Proceedings of SPIE-The International Society for Optical Engineering; vol.6542 pt.2 >Dual-Mode Seeker with Imaging Sensor and Semi-Active Laser Detector
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Dual-Mode Seeker with Imaging Sensor and Semi-Active Laser Detector

机译：具有成像传感器和半主动激光检测器的双模式搜寻器

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摘要

When the field of operation of precision strike ground/air-to-ground missiles is extended to beyond-line-of-sight missions, autonomous seekers will soon encounter serious difficulties, especially with regard to low signature targets and complex scenarios. We have investigated dual-mode sensors which are conceived to overcome these specific problems by combining an imaging sensor with a semi-active laser seeker. These sensors offer non-line-of-sight target engagement with high reliability and under operator control using a laser target designator while minimizing the active exposure time for target designation by handing over the tracking process, once the passive imaging sensor has locked onto the target. For this purpose a laboratory demonstrator has been built with a standard TV-sensor and an InGaAs 4-quadrant detector mounted on a 2-axes gimbal system. Both detectors use a common objective; the focussed radiation is divided by a spectral beam splitter. The signals of the 4-quadrant detector are digitized and subsequently processed by an FPGA. If the pre-programmed laser pulse characteristic is identified, the position information is evaluated and the gimbal system activated in order to center the laser spot. Subsequently a tracker locks onto the target signature found in the imaging sensor signal. Once lock-on is confirmed the laser can be turned off automatically. We present the results of laboratory and field tests obtained with the dual-mode demonstrator. Based on these results we plan to replace the TV-sensor by an uncooled microbolometer array in the future. The design and expected performance of such a dual-mode sensor will be discussed.
机译：当精确打击地面/空对地导弹的作战领域扩展到视线以外的任务时，自主搜寻者将很快遇到严重的困难，特别是在低目标目标和复杂场景方面。我们已经研究了双模传感器，旨在通过将成像传感器与半主动激光寻道器结合起来克服这些特定问题。一旦无源成像传感器锁定到目标上，这些传感器就可以提供非可靠性的目标瞄准，并在操作人员的控制下使用激光目标指示器，同时通过移交跟踪过程来最大限度地减少目标指定的主动曝光时间。 。为了这个目的，实验室演示器已经建造了一个标准的电视传感器和一个安装在两轴万向架系统上的InGaAs四象限检测器。两种检测器都使用一个共同的物镜。聚焦辐射被光谱分束器分开。四象限检测器的信号被数字化，随后由FPGA处理。如果识别出预编程的激光脉冲特性，则将评估位置信息并激活万向架系统，以使激光点居中。随后，跟踪器锁定在成像传感器信号中找到的目标签名。确认锁定后，即可自动关闭激光。我们介绍了使用双模式演示器获得的实验室和现场测试的结果。基于这些结果，我们计划将来用未冷却的微辐射热计阵列替换电视传感器。将讨论这种双模式传感器的设计和预期性能。

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