电子学报2025，Vol.53Issue(2)：409-419,11.DOI:10.12263/DZXB.20240319
传感器运动效应下水声信号传播速度未知的TOA/TOA-AOA水下无源定位方法
TOA/TOA-AOA Passive Localization Methods in the Presence of the Sensor Motion Effect and Unknown Underwater Acoustic Signal Propagation Speed
摘要
Abstract
The existing passive localization methods assume that the moving sensor positions remain unchanged(or approximately unchanged)during signal propagation.This assumption is reasonable in the free space of wireless radio prop-agation.However,in environments where slow signals such as acoustic waves or seismic waves are used for localization,the relative motion between the sensors and the unknown targets results in a non-negligible ratio of the movement distance to the signal propagation distance,using existing passive localization models may lead to substantial performance loss.To address this issue,this paper take the underwater acoustic localization scenario as an example to investigate the passive lo-calization algorithm in the presence of the Sensor Motion Effect(SME)and the unknown underwater acoustic signal propa-gation speed.We first establish the observation model for underwater passive localization with SME,analyze the perfor-mance loss due to neglecting SME in existing localization models,and derive the Cramer-Rao Lower Bound(CRLB)for the new localization scenario.Subsequently,the closed-form solution is developed for determining the source position and the unknown underwater acoustic signal propagation speed.The effectiveness and superiority of the proposed method are validated through theoretical analysis and numerical simulations.关键词
无源定位/传感器运动效应/未知水声信号传播速度/克拉美-罗下界/闭式解Key words
passive localization/sensor motion effect/unknown underwater acoustic signal propagation speed/Cra-mer-Rao Lower Bound/closed-form solution分类
信息技术与安全科学引用本文复制引用
孙霆,王威,高婧洁,陈鹏,董阳阳,董春曦..传感器运动效应下水声信号传播速度未知的TOA/TOA-AOA水下无源定位方法[J].电子学报,2025,53(2):409-419,11.基金项目
陕西省自然科学基础研究计划(No.2023-JC-QN-0743) （No.2023-JC-QN-0743）
长安大学青年学者学科交叉团队建设项目(No.300104240912) （No.300104240912）
长安大学中央高校基本科研业务费专项资金(No.300102243401) Natural Science Basic Research Program of Shaanxi(No.2023-JC-QN-0743) （No.300102243401）
Research Funds for the Interdisciplinary Project,CHU(No.300104240912) （No.300104240912）
Fundamental Research Funds for the Central Universities,CHU(No.300102243401) （No.300102243401）
