DOA estimation in heteroscedastic noise

P Gerstoft, S Nannuru, CF Mecklenbräuker, G Leus - Signal Processing, 2019 - Elsevier
The paper considers direction of arrival (DOA) estimation from long-term observations in a
very noisy environment. The concern is to derive methods obtaining reasonable DOAs at …

High-resolution DOA estimation achieved by a single acoustic vector sensor under anisotropic noise

Y Diao, L Yu, W Jiang - Applied Acoustics, 2023 - Elsevier
The acoustic vector sensor (AVS) has a wide application in the direction of arrival (DOA)
estimation of sound sources including aircraft, underwater or on-land vehicles, search-and …

Direction-of-arrival estimation using Gaussian process interpolation

ID Khurjekar, P Gerstoft… - ICASSP 2023-2023 …, 2023 - ieeexplore.ieee.org
Gaussian processes (GP's) have been used to predict acoustic fields by interpolating under-
sampled field observations. Using GP interpolation to predict fields is advantageous …

Gridless variational direction-of-arrival estimation in heteroscedastic noise environment

Q Zhang, J Zhu, Y Gu, Z Xu - IEEE Journal of Oceanic …, 2021 - ieeexplore.ieee.org
Horizontal line arrays are often employed in underwater environments to estimate the
direction of arrival (DOA) of a weak signal. Conventional beamforming is robust but has wide …

Radar detection algorithm for GARCH clutter model

JP Pascual, N Von Ellenrieder, M Hurtado… - Digital Signal …, 2013 - Elsevier
We propose a GARCH model to represent the clutter in radar applications. We fit this model
to real sea clutter data and we show that it represents adequately the statistics of the data …

Estimating multivariate ARCH parameters by two-stage least-squares method

S Mousazadeh, M Karimi - Signal processing, 2009 - Elsevier
This paper discusses the asymptotic properties of the two-stage least-squares (TSLS)
estimator of the parameters of multivariate autoregressive conditional heteroscedasticity …

An iterative adaptive dictionary learning approach for multiple snapshot DOA estimation

W Tan, W Tan, G Liu, X Ye, C Li - 2018 14th IEEE …, 2018 - ieeexplore.ieee.org
In this paper, we propose an iterative adaptive dictionary learning algorithm for multiple
snapshot direction-of-arrival (DoA) estimation, which is based on the simultaneous …

A Nonlinear ARMA-GARCH Model With Johnson Innovations and Its Application to Sea Clutter Modeling

Y Zhang, H Liu, Y Huang, Z Deng - IEEE Access, 2018 - ieeexplore.ieee.org
In this paper, a novel time series heteroskedastic model is proposed for sea clutter modeling
application. In the light of characteristics of the practical clutter at low grazing angle, the …

Variable scale relative entropy detection for non-cooperative underwater acoustic pulse signals

K Wei, S Fang, J Tao - IEEE Access, 2020 - ieeexplore.ieee.org
This work investigates the detection of non-cooperative underwater acoustic pulse signals at
low signal-to-noise ratio (SNR). A variable scale relative entropy (VSRE) pulse signal …

Analysis of Array Model Errors in GARCH-Based DOA Estimation

H Amiri, H Amindavar, M Kamarei - Iranian Journal of Science and …, 2017 - Springer
In this paper, we consider the theoretical performance analysis of a DOA (direction-of-
arrival) estimation method using GARCH (generalized autoregressive conditional …