Multi-Frequency Based Direction-of-Arrival Estimation for 2q-Level Nested Radar & Sonar Arrays [PDF]
Sensors, 2018 Direction finding is a hot research area in radar and sonar systems. In the case of q ≥ 2, the 2qth-order cumulant based direction of arrival (DOA) estimation algorithm for the 2q-level nested array can achieve high resolution performance.
Hao Zhou +3 more
doaj +2 more sources
Spatial focusing algorithm for source enumeration with rotating uniform circular sonar arrays
IET Radar, Sonar & Navigation, 2023 Source enumeration with large snapshots is feasible for a static uniform circular sonar array (UCSA). However, the dimension of the signal subspace in the array coordinate system exceeds the number of signal sources due to the rotation of the UCSA, which
Guolong Liang +4 more
doaj +2 more sources
RNA programming towards predictable control of living bacterial therapeutics. [PDF]
Clin Transl MedClinical and Translational Medicine, Volume 16, Issue 9, September 2026.
Li N, Tong S, Yin L, Gao Y, Tong Y.
europepmc +2 more sources
A High-Resolution Imaging Method for Multiple-Input Multiple-Output Sonar Based on Deterministic Compressed Sensing [PDF]
SensorsDifferences between conventional sonar and Multiple-Input Multiple-Output (MIMO) sonar systems arise in achieving high angular and range resolution.
Ning Gao, Feng Xu, Juan Yang
doaj +2 more sources
Some Constructions and Mathematical Properties of Zero-Correlation-Zone Sonar Sequences [PDF]
EntropyIn this paper, we propose the zero-correlation-zone (ZCZ) of radius r on two-dimensional m×n sonar sequences and define the (m,n,r) ZCZ sonar sequences. We also define some new optimality of an (m,n,r) ZCZ sonar sequence which has the largest r for given
Xiaoxiang Jin +3 more
doaj +2 more sources
Spatial post-filter for linear hydrophone arrays with applications to underwater source localisation [PDF]
JASA Express Letters, 2022 This letter presents a spatial post-filter that can be employed in linear hydrophone arrays, commonly found in sonar systems, for the task of improving the bearing estimation and noise suppression capabilities of traditional beamformers.
Vasileios Bountourakis +2 more
doaj +1 more source
New Constructions of Extended Sonar Sequences From Sidon Sets
IEEE Access, 2022 A $(m,n)$ sonar sequence is an $m\times n$ array with exactly one dot in each column and where all lines connecting two dots in the array are distinct as vectors.
Luis Miguel Delgado Ordonez +2 more
doaj +1 more source
Wide‐bandwidth signal‐based multireceiver SAS imagery using extended chirp scaling algorithm
IET Radar, Sonar & Navigation, 2022 Traditional chirp scaling algorithm is often developed based on the quadratic approximation of point target reference spectrum, which neglects the higher‐order coupling between range and azimuth dimensions.
Xuebo Zhang +4 more
doaj +1 more source
Electronics Letters, 2023 The authors present exploitation of Multiple Views in Single‐Path (MVSP) Synthetic Aperture Sonar (SAS). The authors demonstrate the interest of MVSP SAS for underwater Mine Counter‐Measures (MCM) with unmanned vehicles, to comply with requirements for ...
Jean‐Philippe Malkasse +4 more
doaj +1 more source
Constant-Beamwidth Beamforming with Concentric Ring Arrays
Sensors, 2021 Designing beampatterns with constant beamwidth over a wide range of frequencies is useful in many applications in speech, radar, sonar and communication. In this paper, we design constant-beamwidth beamformers for concentric ring arrays.
Avital Kleiman +2 more
doaj +1 more source