Enhancing the Radar Cross-Range Resolution in Ultra-Fast Radar Scans by Utilizing Frequency Coded Sub-Channels

• Main Authors: Baer, C. (Author), Kaesbach, R. (Author), Karsch, N. (Author), Musch, T. (Author)
• Format: Article
• Language: English
• Published: MDPI 2022
• Subjects: Antenna beams; Area of interest; Cross-range resolution; FMCW; frequency coding; Frequency coding; Frequency modulation; Operation theory; Radar antennas; Radar measurement; radar resolution; Radar resolution; Radar signal processing; scanning radar; Scanning radar; Single channel radars; Subchannels; Tracking radar; Ultra-fast
• Online Access: View Fulltext in Publisher

 This contribution handles a single-channel radar method that utilizes frequency-coded sub-channels for enabling cross-range resolution. Because of the sub-channel coding, the whole area of interest (AOI) is scanned within a single radar measurement. To further enhance the cross-range resolution, the sub-channels’ antenna beams are overlaid in this work, resulting in multiple coding signatures. Next to the operation theory, hardware components, such as coding filters and antennas, as well as signal processing methods, are presented and discussed in detail. A final measurement campaign that investigates several radar scenarios reveals high detection properties and proves the applicability of the proposed radar method. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.