Expected likelihood support for deterministic maximum likelihood DOA estimation

2013 ◽  
Vol 93 (12) ◽  
pp. 3410-3422 ◽  
Author(s):  
Yuri I. Abramovich ◽  
Ben A. Johnson
Keyword(s):  
Maximum Likelihood ◽  
Doa Estimation ◽  
Deterministic Maximum Likelihood

scholarly journals General Improvements of Heuristic Algorithms for Low Complexity DOA Estimation

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Haihua Chen ◽  
Haoran Li ◽  
Mingyang Yang ◽  
Changbo Xiang ◽  
Masakiyo Suzuki
Keyword(s):  
Computational Complexity ◽  
Maximum Likelihood ◽  
Heuristic Algorithms ◽  
Super Resolution ◽  
Doa Estimation ◽  
Low Complexity ◽  
Evolutionary Strategies ◽  
Deterministic Maximum Likelihood ◽  
Dimensional Optimization ◽  
Number Of Particles

Heuristic algorithms are considered to be effective approaches for super-resolution DOA estimations such as Deterministic Maximum Likelihood (DML), Stochastic Maximum Likelihood (SML), and Weighted Subspace Fitting (WSF) which are involved in nonlinear multi-dimensional optimization. Traditional heuristic algorithms usually need a large number of particles and iteration times. As a result, the computational complexity is still a bit high, which prevents the application of these super-resolution techniques in real systems. To reduce the computational complexity of heuristic algorithms for these super-resolution techniques of DOA, this paper proposes three general improvements of heuristic algorithms, i.e., the optimization of the initialization space, the optimization of evolutionary strategies, and the usage of parallel computing techniques. Simulation results show that the computational complexity can be greatly reduced while these improvements are used.

scholarly journals An Improved Squirrel Search Algorithm for Maximum Likelihood DOA Estimation and Application for MEMS Vector Hydrophone Array

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 118343-118358 ◽  
Author(s):  
Peng Wang ◽  
Yujun Kong ◽  
Xuefang He ◽  
Mingxing Zhang ◽  
Xiuhui Tan
Keyword(s):  
Maximum Likelihood ◽  
Search Algorithm ◽  
Doa Estimation ◽  
Vector Hydrophone ◽  
Hydrophone Array
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