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A multimode multiport antenna (M$^3$PA), constisting of a single conducting structure, is proposed for use with the airborne collision avoidance system (ACAS). Its cupola-shaped surface is selected from a set of aerodynamically suitable and…

Signal Processing · Electrical Eng. & Systems 2024-12-23 Lukas Grundmann , Marc Gerlach , Wolfgang Schäfer , Dirk Manteuffel

We present a system for localizing sound sources in a room with several ad-hoc microphone arrays. Each circular array performs direction of arrival (DOA) estimation independently using commercial software. The DOAs are fed to a fusion…

Most of the prior studies in the spatial \ac{DoA} domain focus on a single modality. However, humans use auditory and visual senses to detect the presence of sound sources. With this motivation, we propose to use neural networks with audio…

Sound · Computer Science 2021-05-14 Xinyuan Qian , Maulik Madhavi , Zexu Pan , Jiadong Wang , Haizhou Li

In this paper, an improved direction-of-arrival (DOA) estimation algorithm for circular and non-circular signals is proposed. Most state-of-the-art algorithms only deal with the DOA estimation problem for the maximal non-circularity rated…

Information Theory · Computer Science 2016-04-07 Liangtian Wan , Lihua Xie

The uniform white noise assumption is one of the basic assumptions in most of the existing directional-of-arrival (DOA) estimation methods. In many applications, however, the non-uniform white noise model is more adequate. Then the noise…

Information Theory · Computer Science 2021-09-21 M. Esfandiari , S. A. Vorobyov , S. Aliban , M. Karimi

Multi-source localization is an important and challenging technique for multi-talker conversation analysis. This paper proposes a novel supervised learning method using deep neural networks to estimate the direction of arrival (DOA) of all…

Audio and Speech Processing · Electrical Eng. & Systems 2021-11-30 Aswin Shanmugam Subramanian , Chao Weng , Shinji Watanabe , Meng Yu , Dong Yu

Data assimilation (DA) aims to estimate the full state of a dynamical system by combining partial and noisy observations with a prior model forecast, commonly referred to as the background. In atmospheric applications, this problem is…

Atmospheric and Oceanic Physics · Physics 2025-05-29 Jing-An Sun , Hang Fan , Junchao Gong , Ben Fei , Kun Chen , Fenghua Ling , Wenlong Zhang , Wanghan Xu , Li Yan , Pierre Gentine , Lei Bai

Face recognition systems have raised concerns due to their vulnerability to different presentation attacks, and system security has become an increasingly critical concern. Although many face anti-spoofing (FAS) methods perform well in…

Computer Vision and Pattern Recognition · Computer Science 2024-01-03 Zhe Kong , Wentian Zhang , Tao Wang , Kaihao Zhang , Yuexiang Li , Xiaoying Tang , Wenhan Luo

In order to improve the accuracy and resolution for transmit beamspace multiple-input multiple-output (MIMO) radar, a search-free direction-of-arrival (DOA) estimation method based on tensor decomposition and polynomial rooting is proposed.…

Information Theory · Computer Science 2020-10-15 Feng Xu , Xiaopeng Yang , Tian Lan

We introduce an interpretable deep learning approach for direction of arrival (DOA) estimation with a single snapshot. Classical subspace-based methods like MUSIC and ESPRIT use spatial smoothing on uniform linear arrays for single snapshot…

Signal Processing · Electrical Eng. & Systems 2023-12-01 Ruxin Zheng , Shunqiao Sun , Hongshan Liu , Honglei Chen , Jian Li

Supervised learning based methods for source localization, being data driven, can be adapted to different acoustic conditions via training and have been shown to be robust to adverse acoustic environments. In this paper, a convolutional…

Audio and Speech Processing · Electrical Eng. & Systems 2019-05-22 Soumitro Chakrabarty , Emanuël A. P. Habets

In this paper, a positioning technique based on Time Difference of Arrival (TDoA) measurements is analyzed. The proposed approach is designed to consent range and position estimation, using ultrasound transmissions of a stream of chirp…

Signal Processing · Electrical Eng. & Systems 2017-10-20 Alessio De Angelis , Antonio Moschitta , Antonella Comuniello

The estimation of direction of arrival (DOA) is a crucial issue in conventional radar, wireless communication, and integrated sensing and communication (ISAC) systems. However, low-cost systems often suffer from imperfect factors, such as…

Signal Processing · Electrical Eng. & Systems 2024-03-21 Peng Chen , Zhimin Chen , Liang Liu , Yun Chen , Xianbin Wang

Existing 2D-3D lifting human pose estimation methods have achieved strong performance. But the utilization of historical pose representations across network depth was overlooked. In current pipelines, information is propagated through fixed…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Zehua Wang , Changwang Mei , Huaijiang Sun , Pengqi Hu , Zhaoyang Yin

Precise parking requires an end-to-end system where perception adaptively provides policy-relevant details - especially in critical areas where fine control decisions are essential. End-to-end learning offers a unified framework by directly…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Chao Chen , Shunyu Yao , Yuanwu He , Feng Tao , Ruojing Song , Yuliang Guo , Xinyu Huang , Chenxu Wu , Liu Ren , Chen Feng

Multimodal aspect-based sentiment analysis (MABSA) aims to understand opinions in a granular manner, advancing human-computer interaction and other fields. Traditionally, MABSA methods use a joint prediction approach to identify aspects and…

Computation and Language · Computer Science 2024-06-14 Shezheng Song , Shasha Li , Shan Zhao , Chengyu Wang , Xiaopeng Li , Jie Yu , Qian Wan , Jun Ma , Tianwei Yan , Wentao Ma , Xiaoguang Mao

Recent works have shown that depth information can be obtained from Dual-Pixel (DP) sensors. A DP arrangement provides two views in a single shot, thus resembling a stereo image pair with a tiny baseline. However, the different point spread…

Computer Vision and Pattern Recognition · Computer Science 2023-06-14 Sagi Monin , Sagi Katz , Georgios Evangelidis

Mutual localization plays a crucial role in multi-robot cooperation. CREPES, a novel system that focuses on six degrees of freedom (DOF) relative pose estimation for multi-robot systems, is proposed in this paper. CREPES has a compact…

Robotics · Computer Science 2023-03-29 Zhiren Xun , Jian Huang , Zhehan Li , Zhenjun Ying , Yingjian Wang , Chao Xu , Fei Gao , Yanjun Cao

Recently, the higher order statistics (HOS) and sparsity based array are most talked about techniques to estimate the Direction of Arrival (DoA). They not only provide enhanced Degree of Freedom (DoF) to handle underdetermined cases but…

Signal Processing · Electrical Eng. & Systems 2018-04-20 Payal Gupta , Monika Agrawal

Joint Communication and Sensing (JCAS) is foreseen as one very distinctive feature of the emerging 6G systems providing, in addition to fast end reliable communication, the ability to obtain an accurate perception of the physical…

Signal Processing · Electrical Eng. & Systems 2023-09-14 Andrea Bedin , Shaghayegh Shahcheraghi , Traian E. Abrudan , Arash Asadi