Jiafeng Ding
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Jiafeng Ding has a total of 4 co-authors. Here are the top co-authors by number of shared publications:
- Jingjing Ning
Key Laboratory of Functional Materials and Devices for Informatics of Anhui Educational Institutions, Fuyang Normal University, Fuyang 236037, China
1 shared publication - Qiaoxi Zhu
Faculty of Engineering and IT, University of Technology Sydney, Sydney, NSW 2007, Australia
1 shared publication - Yankai Zhang
Anhui Digital Intelligent Engineering Research Center for Agricultural Products Quality Safety, Fuyang Normal University, Fuyang 236037, China
1 shared publication - Yue Wang
Key Laboratory of Functional Materials and Devices for Informatics of Anhui Educational Institutions, Fuyang Normal University, Fuyang 236037, China
1 shared publication
Latest Publications
- Open Access
Robust Broadband Differential Beamforming for Fully Steerable Linear Superarrays with Prescribed Nulls
Linear superarrays (LSAs) are linear microphone arrays composed of omnidirectional and first-order directional microphones, and their mixed-sensor manifold supports fully steerable differential beamforming. Building on established null-based target-beampattern theory and WNG-constrained beampattern-error design, this paper develops their joint realization for an LSA. Given a look direction and N prescribed null offsets, the corresponding Nth-order differential reference is obtained through the established null-constrained polynomial relation under the stated nonsingularity condition. The LSA weights are then obtained by minimizing the mean-squared beampattern error (MSBE) over the full array plane, subject to exact distortionless and null constraints and a prescribed white noise gain (WNG) lower bound. For the adopted omnidirectional/first-order-directional LSA model, the angular-integral matrices in the MSBE objective are evaluated analytically, while the final weights are obtained from the resulting convex program. Numerical simulations for the evaluated configurations show lower broadband MSBE than the maximum-WNG NC baseline, stable steering, and more consistent broadband patterns than the tested finite-order Jacobi–Anger designs. Anechoic-chamber measurements with an 11-element prototype further confirm that the main lobe, null structure, and steering behavior are retained in measured free-field responses.
Open AccessRobust Broadband Differential Beamforming for Fully Steerable Linear Superarrays with Prescribed Nulls
Linear superarrays (LSAs) are linear microphone arrays composed of omnidirectional and first-order directional microphones, and their mixed-sensor manifold supports fully steerable differential beamforming. Building on established null-based target-beampattern theory and WNG-constrained beampattern-error design, this paper develops their joint realization for an LSA. Given a look direction and N prescribed null offsets, the corresponding Nth-order differential reference is obtained through the established null-constrained polynomial relation under the stated nonsingularity condition. The LSA weights are then obtained by minimizing the mean-squared beampattern error (MSBE) over the full array plane, subject to exact distortionless and null constraints and a prescribed white noise gain (WNG) lower bound. For the adopted omnidirectional/first-order-directional LSA model, the angular-integral matrices in the MSBE objective are evaluated analytically, while the final weights are obtained from the resulting convex program. Numerical simulations for the evaluated configurations show lower broadband MSBE than the maximum-WNG NC baseline, stable steering, and more consistent broadband patterns than the tested finite-order Jacobi–Anger designs. Anechoic-chamber measurements with an 11-element prototype further confirm that the main lobe, null structure, and steering behavior are retained in measured free-field responses.