1024元长线列红外探测器的数据采集技术

Data acquisition of 1 024-pixel long linear infrared detectors

介绍了一种FPGA实现1 024元长线列红外探测器的数据实时采集处理技术。提出了一种FPGA实现探测器奇偶行对齐的实现方法;改进了二维线性外推盲元检测补偿算法,在对角线方向上进行盲元检测与补偿,解决了多盲元连通时检测效率低的问题;采用定点乘法器和加法器完成了探测器的均匀性校正。实验结果表明:该数据采集处理技术能够提高数据传输处理效率,具有良好的实时性和可移植性。

A real-time data acquisition and processing technique of long linear infrared detectors which was realized on FPGA was introduced. A method of rearrangement of parity line detectors was illustrated with FPGA. By illustrating traditional 2D linear extrapolation blind pixel detection and restoration algorithm, an improved one, which well fitted the case when several blind pixels bordered each other and reduced the detection and restoration efficiency, was proposed. Non-uniformity correction （NUC） of detectors was implemented inside FPGA by referring to the proposed data processing organization. The experiment results show that the mentioned data acquisition and processing techniques can raise data transmission efficiency to a great degree. Meanwhile, it possesses the characteristic of well real-time and can be widely applied in related area.