Zhao Huijie, Li Yansong, Jia Guorui, Li Na, Yu Kai
Opt Lett. 2022 May 1;47(9):2366-2369. doi: 10.1364/OL.456295.
To solve the problem caused by jamming, an acousto-optic tunable filter (AOTF)-based imaging spectrometer and a corresponding spatial-spectral discrimination method are proposed for aerial targets. The system has the capability of staring imaging and is electronically tunable, which provides the spatial location and a distinguishable spectral feature in a few images. Since AOTF operates in a frame mode, the spectral brightness of the targets can be predicted by Kalman filtering, like with the motion model. The final target state is updated by using synthetic spatial-spectral information to realize fast decision-making. The results show that the proposed method is more targeted to solve the problem caused by jamming, compared with the traditional energy discrimination method.
为解决干扰引起的问题，提出了一种基于声光可调谐滤波器（AOTF）的航空目标成像光谱仪及相应的空间光谱鉴别方法。该系统具有凝视成像能力且可电子调谐，能在几幅图像中提供目标的空间位置和可区分的光谱特征。由于AOTF以帧模式运行，目标的光谱亮度可通过卡尔曼滤波像运动模型那样进行预测。利用合成的空间光谱信息更新最终目标状态以实现快速决策。结果表明，与传统能量鉴别方法相比，该方法更有针对性地解决了干扰引起的问题。
