Modulation effects of current on waves refer to the increase or decreaset of ocean surface small scale waves resulted from the convergence or divergence generated by ununiform ocean surface current.It is the key mechanism for microwave remote sensing of many oceanic phenomena such as internal waves,to-pography of shallow water,and ocean fronts,etc.The modulation effects,which are related to many fac-tors like wind speed,ocean wave spectra,surface current,etc,are very complicated and difficult to be re-produced through experiments in ocean.However,the such experiments can be repeated and the modula-tion effects can be easily measured in a water tank in laboratory.In this paper,a method for measuring surface wave spectra and current based on CCD linear array is proposed,and an experiment for internal wave modulation effects observed by the CCD linear array is performed in a stratified flow.The experiment results show that the proposed method base on CCD linear array is efficient for measuring the modulation effects and is especially suitable for measuring modulation effect on the waves with wavelength between cm-mm.The results also show that the relax rate is different from classical modulation model when the wavelength of the modulated wave is less than 3 cm.%波流调制效应是指海面非均匀流场产生的挤压和拉伸，进而导致海面局部小尺度波浪谱发生增强或削弱的效应，它是内波、海底地形、海洋锋面等多种海洋现象能被 SAR 等微波遥感手段观测到的重要物理机制。波流调制效应非常复杂，与海面风速、波浪谱、流场等因素都有关系，直接在海面上开展精确的实验测量非常困难，且重复性差，而在水槽内可以实现较为精确的测量和重复性。本文给出了在水槽实验室内基于线阵 CCD 同步获取水面波浪谱和流场的测量方法，克服了传统的传感器无法同步获取波浪谱和水面流场的缺点，并在分层流水槽内对孤立内波产生的非均匀流场的波流调制效应进行了观测。研究结果表明基于线阵 CCD 的测量方法是研究波流调制效应的有效手段，尤其适合对厘米/毫米波段小尺度波浪谱的波流调制效应的研究。此外，在波长小于3 cm 时波流调制模型的松弛率与经典模型的预测结果有较大出入，需要进一步深入研究。
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