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http://dx.doi.org/10.5515/KJKIEES.2019.30.4.314

W-Band Radar Altimeter for Drones  

Lee, Yong-Seok (College of Information & Communication Engineering, Sungkyunkwan University)
Lee, Gwon-Hak (College of Information & Communication Engineering, Sungkyunkwan University)
Kim, Jun-Seong (College of Information & Communication Engineering, Sungkyunkwan University)
Park, Jae-Hyun (College of Information & Communication Engineering, Sungkyunkwan University)
Kim, Byung-Sung (College of Information & Communication Engineering, Sungkyunkwan University)
Song, Reem (College of Information & Communication Engineering, Sungkyunkwan University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.30, no.4, 2019 , pp. 314-319 More about this Journal
Abstract
In this study, we propose a W-band frequency modulated continuous wave(FMCW) radar altimeter that can measure the altitude based on the frequency differences of transmitted and received signals. This W-band FMCW system is powered by an altitude control algorithm, which we propose to help prevent collisions of drones with obstacles in real deployment by measuring the relative altitude. It is shown that this algorithm enables the drone to be positioned within a 3 % error of altitude from the desired input height. The chip used in the W-band transmitter and receiver was fabricated using a 65-nm CMOS process, and a horn antenna was directly fed by incorporating an embedded waveguide feeder into the chip. The clutter spectra observed in terrains including soil, grass, and calm lake water were measured and compared, confirming the reflectivity characteristics of various surfaces of different water contents.
Keywords
Drone; Radar Altimeter; FMCW; W-Band Radar;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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