论文部分内容阅读
为了提高576×6红外热像仪的帧频,分析了扫描型焦平面探测器的扫描原理,提出了3种帧频提高方法:双向扫描成像;减少帧内无效扫描像元;缩短列周期时间。其中,双向扫描成像突破了当前通常只采用正程扫描时间成像的限制,扫描摆镜正程扫描时间和回扫时间均用来成像,提高了热像仪的成像效率;减少帧内无效扫描像元则推导出了标准输出格式下的探测器最小输出列数,减少甚至消除无效列数成像;缩短列周期则阐述了降低列周期方法以直接降低帧周期成像。分析表明,3种方法可以大幅度提高576×6热像仪帧频。
In order to improve the frame rate of the 576 × 6 thermal imaging camera, the scanning principle of the scanning focal plane detector is analyzed. Three methods of frame rate enhancement are proposed: bi-directional scanning imaging, reduction of intra-frame invalid scanning pixels, shortening of the column cycle time . Among them, the bidirectional scanning imaging breaks through the limitation that the imaging scanning time is usually only used for the normal scanning time. The normal scanning time and the flyback time of the scanning mirror are used for imaging, thereby improving the imaging efficiency of the imaging camera, reducing the intra-frame invalid scanning image Element deduces the minimum number of output columns of the detector in the standard output format to reduce or even eliminate the invalid column number imaging; shortening the column period describes the method of reducing the column period to directly reduce the frame period imaging. The analysis shows that the three methods can greatly improve the frame rate of 576 × 6 camera.