Space-time division cluster DoA estimation algorithm based on UWA spread spectrum signal

Feng ZHOU; Baosheng ZHANG; Wenbo ZHANG

doi:10.11959/j.issn.1000-436x.2022164

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Space-time division cluster DoA estimation algorithm based on UWA spread spectrum signal

Papers | 更新时间：2024-06-05

- Space-time division cluster DoA estimation algorithm based on UWA spread spectrum signal
- Journal on Communications Vol. 43, Issue 8, Pages: 100-108(2022)
- 作者机构：
  
  1. 哈尔滨工程大学水声技术重点实验室，黑龙江哈尔滨 150001
  2. 海洋信息获取与安全工信部重点实验室（哈尔滨工程大学），黑龙江哈尔滨 150001
  3. 哈尔滨工程大学水声工程学院，黑龙江哈尔滨 150001
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.1000-436x.2022164
  CLC： TB566
- Online First：2022-08，
  
  Published：25 August 2022
- 稿件说明：
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Feng ZHOU, Baosheng ZHANG, Wenbo ZHANG. Space-time division cluster DoA estimation algorithm based on UWA spread spectrum signal[J]. Journal on Communications, 2022, 43(8): 100-108.
DOI：

Feng ZHOU, Baosheng ZHANG, Wenbo ZHANG. Space-time division cluster DoA estimation algorithm based on UWA spread spectrum signal[J]. Journal on Communications, 2022, 43(8): 100-108. DOI： 10.11959/j.issn.1000-436x.2022164.

摘要

为了解决波达方向估计稳定性差、分辨率低、低信噪比下性能下降严重等问题，针对水声扩频信号提出了一种空时分簇波达方向估计算法。该算法利用时频二维搜索的思想，将常规波束成形和扩频序列结合，设置角度间隔搜索水声扩频信号的入射角度和到达时延，将空间谱上升至时延-角度谱，使其保持较高的分辨率。利用扩频序列的特性，使空时分簇波达方向估计具有抗干扰和低信噪比下稳健工作的能力。仿真与水池实验结果证明，与传统波达方向估计算法相比，所提算法在抗干扰性、分辨率、抗噪声方面具有更好的性能，同时不需要信源数估计以及角度预估计，具有更加稳健的性能。

Abstract

To solve the problems of poor stability

low resolution

and performance degradation under low signal-to-noise ratio (SNR) of the direction of arrival (DoA) estimation

a space-time division cluster (STDC) DoA estimation algorithm was proposed for under water acoustic (UWA) spread spectrum signal.The idea of the time-frequency two-dimensional search was used to combine the conventional beamforming with the spread spectrum sequence

set the angle interval to search the incidence angle and the arrival delay of the spread-spectrum signal

and increased the spatial spectrum to the delay angle spectrum

which kept the high resolution.STDC-DoA estimation can be anti-interference and stable operation under low SNR by using the characteristics of spread spectrum sequence.Finally

through simulation and pool experiment

it was proved that compared with the traditional DoA estimation algorithm

the proposed algorithm has better performance in anti-interference

resolution

and anti-noise.Meanwhile

the proposed algorithm does not need signal source number estimation and angle prediction and has more robust performance.

关键词

Keywords

references

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