利用夹角几何关系的超短基线定位方法

We propose an angle-based underwater source localization method for ultrashort baselines (USBLs) to overcome deficiencies in localization accuracy in traditional USBLs. The model for USBL source localization and error analysis is constructed through the proposed method to study the influence of depth information on the localization accuracy of USBL. This investigation is performed in accordance with the angle-based geometrical relation in USBL. The proposed method increases localization accuracy by utilizing effective depth information to decrease the effect of the main error source on localization accuracy. Theoretical and simulative studies show that this method can considerably increase the localization accuracy of USBL, especially when estimating the error in phase differences. Moreover, the method can improve localization accuracy in most areas.