Transmit and Receive Array Gain-Phase Error Estimation in Bistatic MIMO Radar

Li, Jun; Jin, Ming; Zheng, Yu; Liao, Guisheng; Lv, Li

doi:10.1109/lawp.2014.2354334

Cited by 34 publications

(25 citation statements)

References 11 publications

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“…. x M are the position errors of the subarray X; the full-rank matrix T is degraded to a constant t, and the signal subspace matrix E is degraded to a (M + 1) dimension vector e. Then, the subspaces corresponding to the two subarrays satisfy: e = e x e y = at Fae jϕ t (16) When Eq. (15) is taken into matrix D in step (d), the matrix D is degraded to a constant g, in which:…”

Section: Formulation Of Design Problemmentioning

confidence: 99%

“…The rotation invariance of the subarray generated by the displacement invariance of the subarray is used to solve the direction of the signal according to the rotation phase between the subfields of the subarray. Compared with other high-resolution DOA estimation algorithms, this algorithm does not need angle search, and the estimation result can be directly calculated [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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An Equivalent Method of Position Error Caused by the Array Antenna Deformation

Ye¹,

Li²,

Du³

2018

PIER Letters

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Abstract-The deformation of antenna array due to external factors results in a significant degradation in the performance of the array direction of arrival (DOA) estimation. To solve this problem, an equivalent method based on the estimation of signal parameters by rotational invariance technique (ESPRIT) in single signal source for the array position errors is proposed in this paper. This method is mainly for the low-order deformation of the array and is based on the equivalent value of the position error. The DOA estimation of ESPRIT algorithm for single signal source was corrected. The simulation results show that the position error equivalent method can effectively equalize the position error caused by the vibration deformation of the array. When the equivalent position error is known, the orientation of the single signal source can be effectively corrected.

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Section: Formulation Of Design Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Equivalent Method of Position Error Caused by the Array Antenna Deformation

Ye¹,

Li²,

Du³

2018

PIER Letters

View full text Add to dashboard Cite

show abstract

“…VBI 28 could be used to find a tractable distribution qðΩÞ that closely approximates the true posterior distribution pðΩjy; φÞ by minimizing the Kullback-Leibler divergence (KLD) between them. A structured mean field approximation over pðΩjy; φÞ is further assumed as E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 1 1 ; 6 3 ; 7 3 0 qðΩÞ ¼ qðβÞqðαÞqðηÞqðα 0 Þ: (11) VBI is carried out using VMP 24 in this paper. VMP is an iterative scheme that uses a message passing procedure on a graphical model and attempts to compute the auxiliary PDF.…”

Section: Variational Message Passingmentioning

confidence: 99%

“…5,6 To compensate the phase error, several eigenstructure-based methods are proposed. [7][8][9][10][11] These methods are less sensitive to phase error but lack adaptation to demanding scenarios with low signal-to-noise ratio (SNR), limited snapshots, and spatially adjacent sources. 12 Recently, sparse recovery and compressive sensing 13 are introduced into signal processing by exploiting the sparsity.…”

Section: Introductionmentioning

confidence: 99%

Radar coincidence imaging with phase error using Bayesian hierarchical prior modeling

Zhou

Wang

Cheng

et al. 2016

J. Electron. Imaging

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Abstract. Radar coincidence imaging (RCI) is a high-resolution imaging technique without the limitation of relative motion between target and radar. In sparsity-driven RCI, the prior knowledge of imaging model requires to be known accurately. However, the phase error generally exists as a model error, which may cause inaccuracies of the model and defocus the image. The problem is formulated using Bayesian hierarchical prior modeling, and the self-calibration variational message passing (SC-VMP) algorithm is proposed to improve the performance of RCI with phase error. The algorithm determines the phase error as part of the imaging process. The scattering coefficient and phase error are iteratively estimated using VMP and Newton's method, respectively. Simulation results show that the proposed algorithm can estimate the phase error accurately and improve the imaging quality significantly.

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“…In 2015, the authors in [18] proposed the sparse auto-calibration method to compensate the gain-phase error in radar coincidence imaging. In the same year, an Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT)-based method was presented to estimate the gain-phase errors [19]. Furthermore, the problem of direction-of-arrival (DOA) estimation for monostatic MIMO radar with gain-phase errors was addressed [20].…”

Section: Introductionmentioning

confidence: 99%

Antenna Phase Error Compensation for Terahertz Coded-Aperture Imaging

et al. 2020

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Coded-aperture antenna plays an important role in terahertz coded-aperture imaging radar system. However, the performance of a system is inevitably affected by the phase errors introduced by the coded-aperture antenna elements. In this paper, we propose a phase error compensation method by deducing a formula to compute all element phase errors accurately. According to the formula, the phase errors can be calibrated by using a calibrator and can be used to compensate the imaging model of the system. Numerical simulations demonstrate that the proposed method can effectively improve the imaging quality when the elemental phase error exceeds 10 ∘ .

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Transmit and Receive Array Gain-Phase Error Estimation in Bistatic MIMO Radar

Cited by 34 publications

References 11 publications

An Equivalent Method of Position Error Caused by the Array Antenna Deformation

An Equivalent Method of Position Error Caused by the Array Antenna Deformation

Radar coincidence imaging with phase error using Bayesian hierarchical prior modeling

Antenna Phase Error Compensation for Terahertz Coded-Aperture Imaging

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