The accuracy of Angle and range estimation of acoustic localization method based on four-element sensor array is influenced by target azimuth Angle.
四元十字阵的测向和测距精度受目标方位角的影响，而五元十字阵就可以克服这一缺点。
The observer's trajectory has an crucial importance on the accuracy of bearings-only target localization.
纯方位角无源定位时，观测平台的运动轨迹对目标最终的定位精度有重要影响。
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