Multiclass Target Azimuth Velocity Estimation Using Single-Channel SAR Imagery
Abstract
This study employs a target-motion SAR phase-refocusing algorithm that generates a moving target phase as a function of azimuth velocity. Combined with a minimum-entropy optimization strategy, this proposed algorithm effectively estimates the moving target velocity from a single-channel SAR system. The accuracy of velocity estimation is validated by applying it to 42 AIS-equipped vessels and 17 ADS-B-equipped aircraft, whose average offset with reference data was 0.59 m/s and 2.94 m/s, respectively. The proposed algorithm was effectively applied to vessels, aircraft, vehicles, and trains, confirming its robust applicability to different types of moving targets.
Fields of Study & Subjects
Advanced SAR Imaging Techniques
Synthetic Aperture Radar (SAR) Applications and Techniques
Image and Signal Denoising Methods
Publication details
- Journal / source
- The Journal of Korean Institute of Electromagnetic Engineering and Science
- Volume
- 37
- Issue
- 1
- Pages
- 73–82
- Publication date
- 1 January 2026
- Language
- EN