Open AccessLocalisation of unresolved targets with frequency divers array radar
Author(s) -
Wang Shengbin Luo,
Xu Zhenhai,
Liu Xinghua,
Dong Wei,
Wang Guoyu
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0350
Subject(s) - beamwidth , computer science , radar , transmitter , interference (communication) , signal (programming language) , range (aeronautics) , pulse repetition frequency , beam (structure) , acoustics , electronic engineering , optics , telecommunications , physics , engineering , aerospace engineering , channel (broadcasting) , antenna (radio) , programming language
The results of angular and range estimation by conventional signal processing will be far away from true values in the case of unresolved targets due to the merged measurement. In this article, the authors propose a method to localise unresolved targets for frequency diverse array (FDA) radar. Adopting the configurations of subarray‐based FDA and full‐band FDA as transmitter and receiver, the transmit and receive beampatterns of system are both decoupled in range and angle demands. Furthermore, the receive beamwidth is only a quarter of transmit in range. With the wide transmit beam and narrow receive beam, the authors divide the resolution cell containing unresolved targets into four parts to process separately. A method of intra‐pulse beam scanning is proposed to suppress the interference from the targets out of receive beam. Several simulation results demonstrate the effectiveness of the proposed method in the localisation of unresolved targets.