Nested array receiver with time‐delayers for joint target range and angle estimation

Wang, Wen-Qin; Zhu, Chenglong

doi:10.1049/iet-rsn.2015.0450

Cited by 23 publications

(10 citation statements)

References 31 publications

(33 reference statements)

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“…Differently, the traditional phased-array generate angle-dependent only transmit beampattern, as shown in Fig. 6c, but it provides no range information of the targets because of its range-independent beampattern [34].…”

Section: Numerical Resultsmentioning

confidence: 99%

Range-azimuth decouple beamforming for frequency diverse array with Costas-sequence modulated frequency offsets

Wang

Shao

2016

EURASIP J. Adv. Signal Process.

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Different from the phased-array using the same carrier frequency for each transmit element, the frequency diverse array (FDA) uses a small frequency offset across the array elements to produce range-angle-dependent transmit beampattern. FDA radar provides new application capabilities and potentials due to its range-dependent transmit array beampattern, but the FDA using linearly increasing frequency offsets will produce a range and angle coupled transmit beampattern. In order to decouple the range-azimuth beampattern for FDA radar, this paper proposes a uniform linear array (ULA) FDA using Costas-sequence modulated frequency offsets to produce random-like energy distribution in the transmit beampattern and thumbtack transmit-receive beampattern. In doing so, the range and angle of targets can be unambiguously estimated through matched filtering and subspace decomposition algorithms in the receiver signal processor. Moreover, random-like energy distributed beampattern can also be utilized for low probability of intercept (LPI) radar applications. Numerical results show that the proposed scheme outperforms the standard FDA in focusing the transmit energy, especially in the range dimension.

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Section: Numerical Resultsmentioning

confidence: 99%

Range-azimuth decouple beamforming for frequency diverse array with Costas-sequence modulated frequency offsets

Wang

Shao

2016

EURASIP J. Adv. Signal Process.

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“…Eker et al [68], [74] also proposed an interesting receive FDA based on LFMCW signal. In [119], this work was further extended to nested-array receiver with time delays. Additionally, receive beamforming for FDA radar systems and multi-domain collaborative filtering for polarization sensitive FDA were discussed in [120] and [121], respectively.…”

Section: A Optimal Array Designmentioning

confidence: 99%

An Overview on Time/Frequency Modulated Array Processing

Wang

Farina³

2017

IEEE J. Sel. Top. Signal Process.

194

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Time and frequency modulated arrays have numerous application areas including radar, navigation and communications. Specifically, a time modulated array can create a beampattern with low sidelobes via connecting and disconnecting the antenna elements from the feed network, while the frequency modulated frequency diverse array produces a range-dependent pattern. In this paper, we aim to introduce these advanced arrays to the signal processing community so that more investigations in terms of theory, methods and applications, can be facilitated. The research progress of time/frequency modulated array studies is reviewed and the most recent advances are discussed. Moreover, potential applications in radar and communications are presented, along with their technical challenges, especially in signal processing aspects.Index Terms-Time modulated array, frequency modulated array, frequency diverse array, array signal processing, phasedarray, range-dependent beamforming, multiple-input multipleoutput (MIMO) radar.

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“…In [17,18], a method based on subarrays to achieve angle and distance decoupling is proposed, but this method has the problem of distance ambiguity. In addition, in [19], the target positioning method of the coprime array FDA radar is studied, and in [20,21], the nested FDA parameter estimation method is studied.…”

Section: Introductionmentioning

confidence: 99%

Tensor-Based Angle and Range Estimation Method in Monostatic FDA-MIMO Radar

Xu¹,

Yang²,

Huang³

et al. 2020

Mathematical Problems in Engineering

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In the paper, joint angle and range estimation issue for monostatic frequency diverse array multiple-input multiple-output (FDA-MIMO) is proposed, and a tensor-based framework is addressed to solve it. The proposed method exploits the multidimensional structure of matched filters in FDA-MIMO radar. Firstly, stack the received data to form a third-order tensor so that the multidimensional structure information of the received data can be acquired. Then, the steering matrices contain the angle and rang information are estimated by using the parallel factor (PARAFAC) decomposition. Finally, the angle and range are achieved by utilizing the phase characteristic of the steering matrices. Due to exploiting the multidimensional structure of the received data to further suppress the effect of noise, the proposed method performs better in angle and range estimation than the existing algorithms based on ESPRIT, simulation results can prove the proposed method’s effectiveness.

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Nested array receiver with time‐delayers for joint target range and angle estimation

Cited by 23 publications

References 31 publications

Range-azimuth decouple beamforming for frequency diverse array with Costas-sequence modulated frequency offsets

Range-azimuth decouple beamforming for frequency diverse array with Costas-sequence modulated frequency offsets

An Overview on Time/Frequency Modulated Array Processing

Tensor-Based Angle and Range Estimation Method in Monostatic FDA-MIMO Radar

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