摘要：【中文】本发明涉及海洋水质数据在线分析技术领域，具体涉及基于DS证据理论的海洋水质数据在线分析评价方法。具体技术方案为：基于DS证据理论的海洋水质数据在线分析评价方法，先采用模糊理论计算水体水质特征参数的测量值相对不同水质等级的隶属度，再利用加权平均法和DS证据理论对隶属度进行融合处理，得到测量值相对不同水质标准等级的置信度，以此判断目标水体的水质等级。本发明利用了模糊理论和DS证据理论在解决多源、不确定信息的表达和融合等方面的优势，消除了因海洋环境变化快、传感器自身性能造成的水质特征参数测量值边界模糊问题，解决了特征参数测量值的量化和评价结果均值化等问题。 【EN】The invention relates to the technical field of ocean water quality data online analysis, in particular to an ocean water quality data online analysis and evaluation method based on DS evidence theory. The specific technical scheme is as follows: the method for online analyzing and evaluating the ocean water quality data based on the DS evidence theory comprises the steps of firstly adopting a fuzzy theory to calculate the membership degrees of the measured values of the water quality characteristic parameters relative to different water quality grades, and then utilizing a weighted average method and the DS evidence theory to carry out fusion processing on the membership degrees to obtain the confidence degrees of the measured values relative to different water quality standard grades so as to judge the water quality grade of a target water body. The invention utilizes the advantages of the fuzzy theory and the DS evidence theory in the aspects of solving the expression and fusion of multi-source and uncertain information, eliminates the problem of fuzzy boundary of the measured value of the characteristic parameter of water quality caused by fast change of marine environment and self performance of the sensor, and solves the problems of quantization of the measured value of the characteristic parameter, averaging of an evaluation result and the like.