An Improved MUSIC Algorithm for DOA Estimation of Non-Coherent Signals with Planar Array

Liu, Yaning; Fu, Juntao; Ran, Xinghao; Le, Ming

doi:10.1088/1742-6596/1060/1/012026

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Measures of the spectrum, including peak width, number and magnitude of additional peaks, and the peak to background ratio, can factor into a "statistical confidence" in the accuracy of the estimation of the center of the largest peak. MUSIC using complex-valued received signals is the most common approach due to higher accuracy, lack of mirrored images, and fewer additional spectral features; however, it suffers from longer, more computationally intense calculations when compared with real-valued received signals [17], [18], [19], [20]. When real-valued signals are simulated, two eigenvectors must be selected to represent the signal subspace.…”

Section: Aoa Estimationmentioning

confidence: 99%

Study of Angle of Arrival Estimation with Linear Arrays of Simulated Rydberg Atom Receivers

Richardson,

Dee,

Kayim

et al. 2024

Preprint

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Rydberg atom receivers have the potential to supplement or replace traditional sensing technologies due to the high sensitivity, electrically small packaging, and unconventional field detection mechanisms they can provide. Given the importance of angle of arrival (AoA) estimation for geolocation and the potential impact of these technologies, more work is needed to understand the Rydberg sensor’s impact on AoA estimation. While there have been many experimental and theoretical efforts to improve the sensitivity and bandwidth of these quantum sensors, few papers have explored the impact these technologies will have on AoA estimation. This paper presents a numerical study of AoA estimation using a simulated linear array of Rydberg atom receivers consisting of vapor cells with laser-defined sense volumes. By utilizing atomic physics and electromagnetics simulations, it is shown that uncompensated atomic transient effects and RF dispersion in glass vapor cell arrays can substantially degrade AoA estimation when compared with a traditional dipole array.

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Section: Aoa Estimationmentioning

confidence: 99%

Study of Angle of Arrival Estimation with Linear Arrays of Simulated Rydberg Atom Receivers

Richardson,

Dee,

Kayim

et al. 2024

Preprint

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Recurrent NEAT Assisted 2D-DOA Estimation With Reduced Complexity for Satellite Communication Systems

Huang

Pedersen

et al. 2022

IEEE Access

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Direction-of-arrival (DOA) estimation plays a vital role in the field of array signal processing. However, the need for heavy computing tasks in most traditional DOA algorithms, e.g., multiple signal classification (MUSIC), makes their engineering practicality significantly compromised in satellite communication systems. The neuroevolution of augmenting topologies (NEAT) can quickly search for appropriate topologies and weights of neural network functions, but its computational complexity is still too high for satellite systems. This paper proposes a modified NEAT architecture featuring a recurrent structure (RNEAT) that only needs a small number of phase components of the received signal covariance matrix as inputs to reduce the complexity and simplify the neural network architecture. The proposed RNEAT incorporated with multiple signal classification (RNEAT-MUSIC) can be easy to achieve high resolution and low complexity simultaneously. Validation has been done by applying the proposed method in a twodimensional direction of arrival estimation (2D-DOA) problem. Results show that the proposed RNEAT-MUSIC efficiently restricts the scanning region before forwarding the covariance matrix to the MUSIC stage. Consequently, the computational workload is reduced by 3/4 compared with the traditional 2D-MUSIC algorithm while maintaining good DoA resolution.INDEX TERMS Direction-of-arrival (DOA), neuroevolution of augmenting topologies (NEAT), multiple signal classification (MUSIC), RNEAT-MUSIC, satellite communication.

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An Improved MUSIC Algorithm for DOA Estimation of Non-Coherent Signals with Planar Array

Cited by 2 publications

References 9 publications

Study of Angle of Arrival Estimation with Linear Arrays of Simulated Rydberg Atom Receivers

Study of Angle of Arrival Estimation with Linear Arrays of Simulated Rydberg Atom Receivers

Recurrent NEAT Assisted 2D-DOA Estimation With Reduced Complexity for Satellite Communication Systems

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