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中文摘要：
目标高度是空海目标分类的重要特征。机载雷达测高精度不高，特别是对远距离目标的测高精度更差，因而利用机载雷达提供的高度信息进行空海目标分类存在很大的不确定性。为了能有效地利用机载雷达提供的高度信息进行空海目标分类，提出了一种基于卡方分布参数检验的多门限空海目标分类方法。首先，基于假设检验的思想，给出了空海目标分类判别函数，并采用了多门限决策方式；然后，结合统计理论给出了各门限的设置，并对算法进行了仿真；最后，讨论了该方法在实际中的应用。
英文摘要：
The target height is the important feature of airborne/sea target classification. The accuracy of height finding of the airborne radar is inaccurate, especially, the accuracy is worse for the long-range target, so, using the target height information provided by airborne radar to airborne/sea target classification is rather uncertain. In order to use the target height information provided by airborne radar to airborne/sea target classification effectively, a multi-threshold classification method for airborne/sea target based on chisquare parameter testing is presented. First, based on the hypothesis testing, the discriminate function for airborne/sea target classification is developed and a multi-threshold decision- making method is adopted. Then, using the statistical theory, the decision thresholds are determined and the simulation is made. Finally, the application of the method in practice is studied.
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