红外微偏振图像模拟以及IFOV误差修正方法研究

The Image Simulation of Infrared Microgrid Polarimeter Imagery and the Study of IFOV Correction Algorithm

微偏振实时探测技术将大大扩展偏振探测技术的应用范围,具有很大的研究价值和应用前景。微偏振探测原理:是以空间换时间,能够实时地进行偏振探测。由于工艺的要求,目前国内暂时还没有具有实用价值的微偏振器件研制成功的报道。分析了微偏振实时探测的一些问题(瞬时视场误差、分辨率降低等),并通过采用一分时的红外偏振探测系统获取数据,模拟出微偏振实时探测的数据,比较了一些常用的线性的误差改善算法。结果表明通过一定的改进算法可以明显减少由于空间分辨率降低以及瞬时视场误差引起的锯齿状条纹,从而提高了图像分辨力。

Microgrid Polarimeter Imagery will greatly expand the applications range of the polarization detection technology, and has great research values and application prospects. Microgrid Polarimeter Imagery is based on the thought of space-for-time, and can finish the polarization detection on the real-time. Due to the process require- ment, the successful development of Microgrid Polarimeter Imagery device having practical value is not repor- ted. Some problems of micro-polarization detection （error of instantaneous field, reduced resolution, etc. are ana- lyzed）, simulated micro-polarization data using the data acquired from a traditional infrared polarization detection system, and compared some correction algorithm commonly used. The results show that through certain improved algorithm jagged stripes caused by the decline of spatial resolution and the instantaneous field of error can be signifi- cantly reduced, the image resolution is improved as well.