Coherent dual‐band radar system based on a unique antenna and a photonics‐based transceiver. Issue 4 (1st April 2019)

• Record Type: Journal Article
• Authors: Brandão, Tiago Henrique; Scotti, Filippo; Filgueiras, Hugo Rodrigues Dias; Alves, Andreia Aparecida de Castro; Onori, Daniel; Melo, Suzanne; Bogoni, Antonella; Cerqueira Sodré, Arismar
• Is Part Of: IET radar, sonar & navigation. Volume 13:Issue 4(2019)
• Page Start: 505
• Page End: 511
• Publication Date: 2019-04-01
• Subjects: antenna radiation patterns -- UHF antennas -- multifrequency antennas -- frequency selective surfaces -- radar detection -- airborne radar -- transceivers; single photonics‐based transceiver -- FSS‐based sub‐reflector -- antenna reflection coefficient -- frequency bands -- dual‐band antenna -- dual‐band radar system -- parabolic antenna -- dual‐band radio‐frequency transceiver -- commercial aircraft -- helicopter; Signal processing -- Periodicals; Radar -- Periodicals; Sonar -- Periodicals; Electronics in navigation -- Periodicals; Navigation -- Periodicals; 621.3848
• DOI: 10.1049/iet-rsn.2018.5046
• Languages: English
• ISSNs: 1751-8784

Abstract

Abstract : This study reports the development of a coherent dual‐band radar system consisting of a frequency selective surface (FSS)‐based dual‐band focal‐point/Cassegrain parabolic antenna and a single photonics‐based transceiver. The proposed antenna enables to simultaneously operate in the S and X bands due to the use of an FSS‐based sub‐reflector. Numerical and experimental results of the antenna reflection coefficient, radiation pattern and gain have been shown in excellent agreement for both frequency bands. Furthermore, the proposed dual‐band antenna has been applied in conjunction with a photonics‐based coherent dual‐band radio‐frequency transceiver operating in the same bands. The authors' innovative radar system has been properly validated by the detection and ranging of a commercial aircraft and a helicopter on a building roof, using S and X bands concurrently.