Results 21 to 30 of about 933,433 (278)
Extension of nested arrays with the fourth-order difference co-array enhancement [PDF]
2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016 To reach a higher number of degrees of freedom by exploiting the fourth-order difference co-array concept, an effective structure extension based on two-level nested arrays is proposed. It increases the number of consecutive lags in the fourth-order difference coarray, and a virtual uniform linear array (ULA) with more sensors and a larger aperture is ...
Shen, Q., Liu, W., Cui, W., Wu, S.L.
openaire +4 more sources
Joint Phased-MIMO and Nested-Array Beamforming for Increased Degrees-of-Freedom [PDF]
International Journal of Antennas and Propagation, 2015 Phased-multiple-input multiple-output (phased-MIMO) enjoys the advantages of MIMO virtual array and phased-array directional gain, but it gets the directional gain at a cost of reduced degrees-of-freedom (DOFs).
Chenglong Zhu, Hui Chen, Huaizong Shao
doaj +2 more sources
Review on Nested Array Design Research [PDF]
Hangkong bingqiArray signal processing is an important branch of signal processing, which is widely used in radar, sonar and wireless communication. Direction of arrival estimation, as one of its key applications, traditionally relies on the layout of uniform linear ...
Mao Yanyuan, Ma Wanyu, Si Weijian
doaj +2 more sources
International Journal of Antennas and Propagation, 2022 Direction of arrival (DOA) estimation for non-Gaussian signals using three-level nested array (THL-NA) is investigated in this paper. Motivation from larger consecutive degree of freedom (DOF) and array aperture, the THL-NA is proposed, which can take ...
Sha Shi +4 more
doaj +2 more sources
Computationally Efficient Sources Location Method for Nested Array via Massive Virtual Difference Co-Array. [PDF]
Sensors (Basel), 2019 In this paper, we derive the discrete Fourier transform (DFT) method for direction of arrival (DOA) estimation by generating the massive virtual difference co-array with the nested array. By contrast with the spatial smoothing (SS) subspace-based methods
Wu W, Wang Y, Zhang X, Li J.
europepmc +2 more sources
Generalized L-Shaped Nested Array Concept Based on the Fourth-Order Difference Co-Array. [PDF]
Sensors (Basel), 2018 In this paper, a generalized L-shaped nested array based on the fourth-order difference co-array is proposed for two-dimensional (2D) directions’ estimation.
Zhang L, Ren S, Li X, Ren G, Wang X.
europepmc +2 more sources
Direction of Arrival Estimation of Generalized Nested Array via Difference-Sum Co-Array. [PDF]
Sensors (Basel), 2023 To address the weakness that the difference co-array (DCA) only enhances the degrees of freedom (DOFs) to a limited extent, a new configuration called the generalized nested array via difference–sum co-array (GNA-DSCA) is proposed for direction of ...
Zhang Y +5 more
europepmc +2 more sources
Nested perfect toroidal arrays
CoRR, 2023 We introduce two-dimensional toroidal arrays that are a variant of the de Bruijn tori. We call them nested perfect toroidal arrays. Instead of asking that every array of a given size has exactly one occurrence, we partition the positions in congruence classes and we ask exactly one occurrence in each congruence class.
Verónica Becher, Olivier Carton
openaire +3 more sources
A New Sparse Linear Array With Three-Level Nested Structure [PDF]
, 2019 Mutual coupling, which is caused by a tight intersensor spacing in uniform linear arrays (ULAs), will, to a certain extent, affect the estimation result for source localisation. To address the problem, sparse arrays such as coprime array and nested array
Chen, M +8 more
core +2 more sources
Arthropod-Inspired Miniature Modular Vibration Direct-Drive Robot With Untethered Locomotion. [PDF]
Adv Sci (Weinh)This work presents an arthropod‐inspired untethered miniature modular vibration direct‐drive robot. By utilizing standardized driving units and nested locking interfaces, on‐demand reconfiguration into quadruped, hexapod, octopod, and circular morphologies is achieved.
Zhang S, Liu Z, Liu Y, Wang D, Liu Y.
europepmc +2 more sources