CAJ | 학술논문

针对低信杂比漂移扫描星图中小目标检测易受恒星星像干扰的问题，提出一种基于单帧候选检测及多帧跟踪判决的实时处理方法。分析星图难以多帧匹配去恒星星像的原因，采用单帧处理的方式，通过构造星像端点掩膜滤除单帧检测中的虚假目标。将单帧得到的候选目标进行粒子滤波的粒子生成，运用目标运动信息构造似然函数分布图更新粒子权重，通过粒子滤波实现了漂移扫描星图中的小目标检测。实际低信杂比星图的实验结果和与相关方法的比较表明，所提方法有效提高了弱小目标的检测能力。
침대저신잡비표이소묘성도중소목표검측역수항성성상간우적문제，제출일충기우단정후선검측급다정근종판결적실시처리방법。분석성도난이다정필배거항성성상적원인，채용단정처리적방식，통과구조성상단점엄막려제단정검측중적허가목표。장단정득도적후선목표진행입자려파적입자생성，운용목표운동신식구조사연함수분포도경신입자권중，통과입자려파실현료표이소묘성도중적소목표검측。실제저신잡비성도적실험결과화여상관방법적비교표명，소제방법유효제고료약소목표적검측능력。
Aim at problem of stars have interfered with the detection of small target in the drift-scanning image of low signal-to-clutter ratio, a real-time processing method was presented, based on detecting candidate targets in single frame and tracking to judge the real target with multi-frames. The reason of filtering out the star hardly in the image through multi-frames match was analyzed, and then a single frame processing method was adopted. With the order statistics filter, the star endpoint shelter was made to filter out false targets detected in single frame. The candidate targets from the single frame processing were used for particle generation in particle filter, and the likelihood function map based on the target moving information was used for updating the particle weight in particle filter. The above operation made the particle filter can be applied to the processing of small target detection on drift-scanning images. Experiments on the actual low signal-to-clutter ratio drift-scanning image and analysis on the different related methods have shown that the method proposed has improved the ability of dim target detection.