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- 2016
水声定位中一种大入射角声线跟踪方法
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Abstract:
在高精度水下声学定位中，常采用分层等梯度声线跟踪的方法对水下目标进行定位。但当声线入射角度过大时，该方法入射角的迭代解算会出现发散问题。首先，针对该问题产生的原因进行了分析，并在此基础上提出了一种新的入射角迭代方法，新方法采用曲率半径R代替Snell常数p进行迭代。利用500 m水深模拟数据进行了验证，结果表明：在声线入射角较小时（如不大于80°），新方法和原方法的定位精度相当；在声线入射角度进一步增大时，新方法的定位效果优于原方法
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