A modified weighted high-resolution adaptive range estimation method for active sonar
一种改进的有源声呐加权高分辨率自适应距离估计方法
アクティブソナーのための修正加重高分解能適応範囲推定法
능동 소나에 대한 수정된 가중 고해상도 적응 범위 추정 방법
Un método de estimación de rango adaptativo de alta resolución ponderado modificado para sonar activo
Une méthode d'estimation de portée adaptative haute résolution pondérée modifiée pour sonar actif
Модифицированный взвешенный метод адаптивной оценки дальности с высоким разрешением для активного гидролокатора
ZHANG Shuhao 张舒皓 ¹ ², MA Xiaochuan 马晓川 ¹ ², WANG Lei 王磊 ¹, SONG Qiyan 宋其岩 ¹ ², ZHAN Fei 詹飞 ¹
¹ Institute of Acoustics, Chinese Academy of Sciences Beijing 100190
中国 北京 中国科学院声学研究所
² University of Chinese Academy of Sciences, Beijing 100049
中国 北京 中国科学院大学
Chinese Journal of Acoustics, 2 October 2021 (revised proof)
Abstract
This paper proposes a high-resolution adaptive range-dimensional beamforming approach to improve the performance of the range estimation of active sonars.In our approach,three types of weight matrices are proposed.
The first approach utilizes a diagonal matrix,where the first element on the main diagonal is the residual sum of squares,while all the rest is set to zero.The second approach uses an identity matrix.In the third approach,we use a diagonal matrix,where the main diagonal is filled with the residual sum of squares used in the first one.
Furthermore,we also propose a high-order linear prediction model with different references of sub-bands by using the three weight matrices to construct the output of the power spectrum.One advantage of our proposed approach avoids the low-order linear prediction used by the range-dimensional beamforming method.
We compare our approach with states-of-theart range-dimensional beamforming methods.The experimental results show that our proposed approach achieves a higher range resolution.
