| Infrared detection technology is important means of detecting moving target in space, its performance directly affect the accuracy of the results of moving target detection. With the rapid development of infrared interference technologies, infrared detection technology faces the great challenge. Along with anti-interference, moving target's detecting and tracking technology of infrared detector enhanced, infrared sensor has been developed from one, two, four, and to even multi-detector. Multi-detector infrared detection technology is one of the development tends of the moving target detection.In this paper the structure and principle of infrared detection system is introduced. Comparative analysis of the traditional "L" shape and "Cross" shape detector, a new dual-band multi-detector infrared detection technology is studied. Then based on it, three target positioning algorithms are analyzed and compared: synthesized signal based method, geometric method and maximum phase shift method, and the optimal algorithm is adapted. Finally, compared with semi-physical simulation results of different infrared sensor, the conclusion show that: the more detectors, the more favorable for anti-interference algorithm design. |
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