基于辐射标定的积分时间实时调整方法

积分时间调整是扩展红外辐射测量系统动态范围的主要手段，针对再入高速目标因辐射剧烈变化存在积分时间调整影响实时跟踪和图像饱和的问题，提出基于辐射标定的积分时间实时调整方法.该方法通过辐射标定得到不同积分时间的响应度和偏置，利用跟踪器提取的目标和背景信息计算光学入瞳处当前积分时间的目标和背景辐射；再反演计算其他积分时间的目标和背景信息，并以此计算跟踪判据，自动确定最佳积分时间.实验证明，该方法能准确预测满足跟踪要求的最优积分时间，有效减少测量过程中积分时间调整次数，目标连续跟踪正确率达100%.

Abstract

The integral time adjustment is the primary means to extend the dynamic range of the infrared radiation measuring system. A real-time integral time adjustment method based on radiation calibration was put forward according to the radiation dramatic changes for the re-entry high-speed target, tracking affection and image saturation when integral time is adjusted. Radiation calibration can get the response and the bias of different integral time; the target radiance and the background radiance at the entrance pupil can be calculated by the target information and the background information. Then, the targets and the backgrounds signal value on the other integral time can be computed by the target radiance and the background radiance. The optimal integral time can be predicted by the tracking criterion. Experimental results show that the method can accurately locate the optimal integral time, reduce the number of integral time adjustment in the measurement process, and realize the target continuous tracking accuracy rate of 100%.

参考文献

[1] YANG Ci-Yin, ZHANG Jian-Ping, CAO Li-Hua. Infrared radiation measurement based on real-time correction［J］. J. Infrared Millim. Waves(杨词银，张建萍，曹立华. 基于实时标校的红外辐射测量新方法.红外与毫米波学报)，2011,30(3): 284288.

[2] TAO Kun-Yu, LI Fu-Wei, ZHOU Yan-Ping, et al. IRFPA imaging system dynamic range adaptive adjust technology［J］.Infrared and Laser Engineering(陶坤宇,李福巍,周彦平,等.红外焦平面成像系统动态范围自适应技术研究.红外与激光工程),2008,49(2): 265269.

[3] LENG Han-Bing, TANG Xin-Yi, PENG Ding-Xiang. Research on non-uniformity correction of IRFPA based on integral time adjust［J］. J. Infrared Millim. Waves(冷寒冰,汤心溢,彭鼎祥.基于积分时间调整的红外焦平面阵列非均匀校正算法研究.红外与毫米波学报),2007,26(4): 246250.

[4] WANG Rui, SHAO Xiao-Peng, XU Jun, et al. Study on improving dynamic range of infrared imaging system based on calibrating integration time［J］. Infrared Technology(王锐,邵晓鹏,徐军,等.基于定标积分时间法提高红外成像系统动态范围的研究.红外技术),2009,32(7):381385.

[5] YANG Ci-Yin, ZHANG Jian-Ping, CAO Li-Hua. Infrared radiation measurement based on proportional corrected atmospheric transmittance［J］. Optics and Precision Engineering(杨词银，张建萍，曹立华. 基于大气透过率比例校正的目标辐射测量.光学精密工程),2012,20(7):16261635.

[6] QU Hui-Ming, CHEN Qian. Surrounding temperature compensation for infrared focal plane arrays non-uniformity correction［J］. Infrared and Laser Engineering(屈惠明，陈钱. 环境温度补偿的红外焦平面阵列非均匀性校正. 红外与激光工程),2011,40(12):23282332.

[7] Li Xian-sheng, REN Jian-Wei, ZHANG Li-Guo, et al. Research on a radiometric calibration device for a large aperture infrared opto-electrics system on spot［J］. Journal of Optoelectronics·Laser(李宪圣，任建伟，张立国，等.大口径红外光电系统现场辐射定标装置的研究.光电子激光)，2006,17(2)：175178.

[8] BAI Jun-Qi, CHEN Qian, QIAN Wei-Xian, et al. Non-uniformity correction for infrared focal plane arrays based on environmental temperature［J］. J. Infrared Millim. Waves(白俊奇，陈钱，钱惟贤，等. 基于环境温度的红外焦平面阵列非均匀性校正. 红外与毫米波学报), 2010,29(1):4952.

[9] HUO Xiao-Jiang, GUO Zhao-Min, ZHANG Zhi-Heng, et al. Research on non-uniformity correction of IRFPA based on integration time［J］. Infrared and Laser Engineering(霍晓江，郭肇敏，张志恒，等. 基于积分时间的IRFPA非均匀性校正方法研究.红外与激光工程),2008,37(s2):604607.

[10] LU Jian-Feng. Design of real-time processing system for IR image tracking based on digital signal processor［J］. Infrared and Laser Engineering(鲁剑锋. 红外图像跟踪基于数字信号处理器的实时处理系统的设计.红外与激光工程), 2008,37(s2):622625.

李满良, 吴钦章, 夏默, 吴淑文. 基于辐射标定的积分时间实时调整方法[J]. 红外与毫米波学报, 2014, 33(3): 297. LI Man-Liang, WU Qin-Zhang, XIA Mo, WU Shu-Wen. Integral time real-time adjust method based on radiation calibration[J]. Journal of Infrared and Millimeter Waves, 2014, 33(3): 297.

基于辐射标定的积分时间实时调整方法

关于本站 Cookie 的使用提示

全站搜索

基于辐射标定的积分时间实时调整方法

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索