Analysis of a Distributed Array System for Satellite Acquisition

Anton, Alberto; Garcia-Rojo, Isabel; Giron, Alejandro; Morales, Eva; Martínez, Raquel

doi:10.1109/taes.2017.2667898

Cited by 9 publications

(1 citation statement)

References 18 publications

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“…However, antenna arrays in ground sections need to have high gain, which results in a narrow beam and prolonged period to acquire the accurate data of satellites [1]. Especially under certain scenarios (e.g., launch and early orbit phase (LEOP) of critical maneuvers), ground stations will lose the ability to operate the spacecraft [2]. Besides, radio frequency interference (RFI) incidents from the ground to satellites show an upward trend [3], [4].…”

Section: Introductionmentioning

confidence: 99%

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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Section: Introductionmentioning

confidence: 99%

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

Huang

Pedersen

et al. 2022

IEEE Access

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Fast Joint DOA and Inter‐Subarray Errors Estimation in Partly Calibrated Arrays

Song,

Yan,

Meng

et al. 2024

Radio Science

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In this paper, we utilize the original noise subspace and its conjugate to reconstruct a new estimator for the fast joint estimation of DOA and inter‐subarray errors in the partly calibrated arrays (PCA), namely fast‐rank‐reduce (F‐RARE). Based on the new estimator, the collection of true DOA estimation and its virtual mirror can be obtained by searching over only half of the total angular field‐of‐view. Then, the true DOA estimation can be selected by using the conventional beamforming (CBF) technique. Additionally, the inter‐subarray errors can also be computed by a finite number of subspace decompositions. Numerical simulation illustrates that compared with the conventional RARE algorithm, the new method can not only reduce the computational burden by a half but also provide a similar estimation accuracy.

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Frequency-Phase Decoupling Method for Carrier Synchronization in Space Communications

Zhu

et al. 2019

IEEE Wireless Commun. Lett.

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Analysis of a Distributed Array System for Satellite Acquisition

Cited by 9 publications

References 18 publications

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

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

Fast Joint DOA and Inter‐Subarray Errors Estimation in Partly Calibrated Arrays

Frequency-Phase Decoupling Method for Carrier Synchronization in Space Communications

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