关键词: 目标检测, 目标视场角, 结构化判别成分分析, 探测率

Abstract: In order to improve the accuracy of the P300-RSVP target detection system, the influence of the target perspective on the target detection system is studied. Five subjects are tested using four different angles of view as target stimuli. Brain waves generated by the subjects’ brains are preprocessed, and the EEG signals corresponding to the target images are averaged over 50 times. The peak value of P300 is highest when the target’s field of view angle is around 8°. Hierarchical Discriminant Component Analysis（HDCA） is used to classify single-trial EEG signals. When the target’s angle of view is about 8°, the target detection rate averages over 82%, which is higher than the target detection rate corresponding to the other target perspective.

Key words: target detection, target perspective, Hierarchical Discriminant Component Analysis（HDCA）, detection rate