Results 71 to 80 of about 127 (116)
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Beampattern Synthesis With Sidelobe Control and Applications
IEEE Transactions on Antennas and Propagation, 2020In this article, we consider the problem of beampattern synthesis with sidelobe control using constant modulus weights. We specifically focus on two applications, i.e., notching and sidelobe-level (SLL) control (SLC). The considered problem is a challenging NP-hard due to the employed constant-modulus weights.
Ashenafi Yadessa Gemechu +3 more
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Beampattern synthesis via the constrained subarray layout optimization
IEEE Transactions on Antennas and Propagation, 2021This article deals with a joint design of subarray layout vector (LV) and weighted coefficient of radiation element (RE) to achieve desired beampattern for a new array architecture. We first present an architecture of thinned array composed of multiple regular subarrays (ACMRS) and establish corresponding subarray layout and beampattern models.
Lifang Feng +3 more
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Beampattern Synthesis for Active RIS-Assisted Radar With Sidelobe Level Minimization
Signal Processing, 2023Shengyao Chen, Longyao Ran
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Beampattern Synthesis With Blind Interference Suppression
IEEE Transactions on Signal Processing, 2012We suggest an adaptive blind interference suppression (BIS) beamformer that synthesizes a desired beampattern. For a strong interference, the principal eigenvector of the data sample covariance matrix approaches the array response at the interference direction.
Alon Amar, Miriam A. Doron
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Beampattern Synthesis with Subarray Layout
2019 IEEE International Conference on Signal, Information and Data Processing (ICSIDP), 2019This paper focused on a beampattern synthesis problem with the constrained subarray layout constrained optimization. We first propose a thinned array architecture, and establish a beampattern model constrained by subarray layout. In order to achieve the optimal layout of subarrays and the optimal design of weight vector, we establish an optimal model ...
Lifang Feng +3 more
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Beampattern synthesis with minimal dynamic range ratio
Signal Processing, 2018Abstract The excitations with a small value of dynamic range ratio (DRR) are helpful to control the mutual coupling between array elements, reduce the output power loss, and simplify the feeding network design. Unlike the commonly specified DRR, this communication focuses on finding the minimal DRR of the excitations while synthesizing a desired ...
Xuhui Fan 0002 +2 more
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Transmit Beampattern Synthesis for MIMO Radar with One-Bit DACs
2020 28th European Signal Processing Conference (EUSIPCO), 2021In this paper, the problem of transmit beampattern synthesis (i.e., transmit beamforming) in multiple input multiple output (MIMO) radar which deploys one-bit digital-to-analog converts (DACs) is investigated. We aim to design appropriate transmit signal sequences, which are quantized by one-bit DACs, such that the amount of transmit energy can be ...
Tong Wei +3 more
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Optimal Beampattern Synthesis of a Polarized Array
2007 IEEE/SP 14th Workshop on Statistical Signal Processing, 2007Utilizing the polarization information in waveforms about targets enables improving the performance of radar systems. We consider the optimal synthesis of the polarized beampattern of an array of antennas, each having two orthogonal electricdipole elements.
Jin-Jun Xiao, Arye Nehorai
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Beampattern synthesis and computation for cylindrical arrays
The Journal of the Acoustical Society of America, 1982The synthesis and calculation of beampatterns for cylindrical arrays can be greatly simplified by factoring the problem into a line array of identical hoops under very mild restrictions on array geometry. For example, elements may be directive and hoops may be nonuniformly spaced.
Henry Cox, Robert Elmer, John Thurston
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Waveform Synthesis for Diversity-Based Transmit Beampattern Design
IEEE Transactions on Signal Processing, 2008Transmit beampattern design is a critically important task in many fields including defense and homeland security as well as biomedical applications. Flexible transmit beampattern designs can be achieved by exploiting the waveform diversity offered by an array of sensors that transmit probing signals chosen at will.
Petre Stoica, Jian Li 0001, Xumin Zhu
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