利用混沌激光实现一定浓度脂肪乳液中异质物大小和位置的光学检测,实验采用混沌激光作为光源,并将光信号分为两路,一路信号用于探测脂肪乳液中的异质物信息,另外一路直接经过光电探测器作为参考信号,将两路光信号由光电探测器接收,通过信号处理系统进行互相关,分析混沌激光的互相关峰值信息,可得到异质物的大小和位置信息; 通过混沌激光实现异质物信息分析的理论模型,建立混沌相关信号峰值信息与异质物大小和位置之间的关系,并且通过实验验证。结果表明：采用混沌互相关法可以对异质物大小和位置坐标进行探测。

A novel optical detection of the size and position of foreign object was demonstrated. The chaotic laser was split into two parts in the experiment. One was used to detect foreign object, and the other one was detected by a photodetector served as a reference signal. The two signals were received by the photoelectric detector and the cross-correlation analysis was carried out. The size and position of foreign object in Intralipid solution can be obtained by analyzing the peak value of the cross-correlation. The relationship between the cross-correlation of chaotic signal and the size and position of the foreign object was obtained experimentally and theoretically. The results show that the chaotic cross-correlation method can be used to detect the size and position coordinates of foreign object.