.png){kind=icon}
.png){kind=icon}
Return
Enhanced Range-Angle Super-Resolution Approach with FDA-MIMO Radar
.png){kind=icon}
PRE
AI
F
Y
王
J
Y
DOI：10.1016/j.sigpro.2026.110683.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
The conventional MIMO radar possesses only angle degrees of freedom in both its transmit and receive beampatterns, thereby limiting multi-target discrimination solely to the angle dimension. In contrast, FDA-MIMO radar incorporates range degrees of freedom in its transmit beampattern, enabling joint range-angle processing that significantly enhances multi-target resolution capability. In this paper, an enhanced range-angle super-resolution method with FDA-MIMO radar is proposed, which sufficiently improves the angle resolution by exploiting the degrees of freedom in range. In the proposed method, a two-dimensional resolution principle is studied in a non-orthogonal range-angle coordinate system, because the FDA-MIMO radar provides coupled range-angle resolution. To further improve the angle resolution, the frequency increment as well as array element spacing are jointly optimized to alleviate the inconsistent regional resolution issue due to range-angle coupling effect of the transmit beampattern. Furthermore, we incorporate the Doppler dimension thus to obtain a three-dimensional resolution enhancement, enabling super resolution in range, angle, and velocity dimensions via 3D-MUSIC algorithm, which achieves effective resolution capability under low signal-to-noise ratio condition. Simulation examples demonstrate that the proposed super-resolution method with FDA-MIMO radar can obtain sufficient resolution of multi-target within 1/5 beamwidth.
Keywords:
FDA-MIMO radar
range-angle resolution
super-resolution
3D-MUSIC algorithm
beamforming optimization
Journal
IF:
3.6
Papers:
9.8K
Citations:
1.7W
Organization
Cited Papers