CAJ | 학술논문

针对红外焦平面阵列(IRFPA)响应随温度及时间漂移的特点，及红外成像系统兼备测量和监视的要求，设计了一种能够对环境自适应的长波非制冷红外成像系统。系统采用FPGA单处理器架构，实现系统控制和图像处理等功能，简化了系统架构，降低了功耗。采用ADN8830进行控温，使探测器工作在最佳工作温度点，保证了探测器的成像性能。提出了基于黑体快门的非均匀性校正技术，实现了红外图像的实时校正，并有效补偿了外部环境的影响。视频输出采用模拟和数字双输出方式，模拟视频输出为图像增强后输出，便于人眼观察，数字输出为12 bit量化原始输出，可用于测量，系统可同时满足监视和测量的要求。试验结果表明，系统具有成像质量良好、环境适应性强、功耗低等特点。
침대홍외초평면진렬(IRFPA)향응수온도급시간표이적특점，급홍외성상계통겸비측량화감시적요구，설계료일충능구대배경자괄응적장파비제랭홍외성상계통。계통채용FPGA단처리기가구，실현계통공제화도상처리등공능，간화료계통가구，강저료공모。채용ADN8830진행공온，사탐측기공작재최가공작온도점，보증료탐측기적성상성능。제출료기우흑체쾌문적비균균성교정기술，실현료홍외도상적실시교정，병유효보상료외부배경적영향。시빈수출채용모의화수자쌍수출방식，모의시빈수출위도상증강후수출，편우인안관찰，수자수출위12 bit양화원시수출，가용우측량，계통가동시만족감시화측량적요구。시험결과표명，계통구유성상질량량호、배경괄응성강、공모저등특점。
In view of the fact that the response of IRFPA will drift with time and temperature and the IR imaging system will be used to measure and watch, an long-wave infrared uncooled imaging system which has adaptive correction function was designed. The system is based on FPGA, in which FPGA performs system control and image processing. Architecture of the system is simple and with less power dissipation. In order to improve the performance of the detector, a temperature control circuit based on ADN8830 was introduced, which could set temperature of the detector to a fixed point. In order to correct non-uniform responses of the detector′s individual elements, an adaptive non-uniformity correction algorithm was proposed based on shutter, which could compensate the response drift according to temperature and time. The system had both analog and digital video output, in which analog video could be used to watch, while digital video with 12 bit precision could be used to measure. The results show that the imaging system has the advantages of good image quality, good environmental adaptability and low power consumption.