Investigation of SAR Resolution at Translational and Rotational Motion of Interlinked Antenna Phase Centers

Yasentsev, D. A.; Tatarskiy, B. G.

doi:10.1109/ieeeconf53456.2022.9744354

Cited by 1 publication

(1 citation statement)

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“…Calibration of antenna arrays is in demand in complexes of various purposes. These are multi-user MIMO systems [29,30]; various on-board aviation systems [31,32]; ground and satellite stations [33][34][35][36]; and even floating [37] or rotational platforms [38]. Calibration algorithms are constantly being improved, new ones are appearing, and known methods are being experimentally studied [39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Development of the Phaseless Calibration Algorithm for a Digital Antenna Array

Dobychina,

Snastin,

Savchenko

et al. 2023

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In this paper, we will discuss a calibration algorithm for a digital antenna array that diagnoses its real performance. It can be applied at such stages of the antenna system life cycle as design, tuning, and especially maintenance. A calibration implementation using a scalar method for a multi-beam digital antenna array is proposed and investigated. On-the-fly calibration ensures a continuous improvement in beam pointing accuracy by reducing internal errors in the receiving (transmitting) channels. The purpose of the study is to experimentally examine the capabilities of digital beamforming to increase the angle-of-arrival estimation accuracy. A simulation model of the receiving antenna was created in an anechoic chamber with a planar antenna positioner. The possibility of precise estimation of the direction of arrival using the digital beamforming with electronic scanning was demonstrated. The proposed simulation model made it possible to observe the convergence of the antenna array calibration process using the proposed method for various errors in the signal paths, as well as different signal-to-noise ratios. It has been proven that even under adverse conditions early in the calibration algorithm, the phase error detection converges with high accuracy, and its value decreases uniformly even to the fractions of an angular degree.

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