Vertical profile of turbulence strength () is one of the most important attributes for evaluating a site’s astronomical performances. Although seeing is commonly used for describing turbulence strength, it can only represent the integral of all layers of the turbulence above the observer. Other techniques which can be applied to produce , such as DIMM-MASS, SCIDAR, etc., all rely on rather complex systems to do the measurements. In this paper, we present an idea to evaluate the relative strength of turbulence with entropies of short exposure images taken at different conjugated heights of the turbulence. Initial experimental results are also presented in the paper.

湍流强度的垂直剖面 ( ) 是评估场地天文性能的最重要属性之一。虽然常用来描述湍流强度，但它只能表示观察者上方湍流各层的积分。其他可用于生产的技术，如 DIMM-MASS、SCIDAR 等，都依赖于相当复杂的系统来进行测量。在本文中，我们提出了一个想法，用在湍流的不同共轭高度拍摄的短曝光图像的熵来评估湍流的相对强度。论文中还介绍了初步的实验结果。