Work

Coherent FDA Radar: Transmitter and Receiver Design and Analysis

Year: 2025

Type: article

Abstract: The combination of frequency diverse array (FDA) radar technology with multiple-input–multiple-output (MIMO) radar architecture and waveform diversity techniques potentially promises a high integration gain with respect to conventional phased-array (PA) radars. In this article, we propose an approach to the design of the transmitter and receiver of a coherent FDA (C-FDA) radar that enables it to perform the demodulation with spectral overlapping due to the small frequency offsets. To this purpose, we derive the generalized space-time-range signal model and prove that the proposed C-FDA radar has a higher coherent array gain than a PA radar, and at the same time, it effectively resolves the secondary range-ambiguous problem in FDA-MIMO radar, allowing for mainlobe interference suppression and range-ambiguous clutter suppression. Numerical results prove the effectiveness of the proposed C-FDA radar in terms of antiinterference and anticlutter capabilities over conventional radars.

Source: IEEE Transactions on Aerospace and Electronic Systems

DOI: 10.1109/taes.2025.3552553

Authors: Yan Sun, Ming-Jie Jia, Wen-Qin Wang, Maria Sabrina Greco, Fulvio Gini, Shunsheng Zhang

Institutions: University of Electronic Science and Technology of China, University of Pisa

Language: English

Topic: Radar Systems and Signal Processing

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Università di Pisa

Awards: G1067992346, G8146081698