A Study on Point Target Selection Methods for Improving PGA Performance

Key Points

• The goal is to enhance phase gradient autofocus performance in synthetic aperture radar systems through better target selection methods.
• Identifying issues in traditional point target selection methods for phase error estimation.
• Proposing a new method to select isolated point targets unaffected by surrounding scatterers.
• Performing simulations on point targets and real images to evaluate the proposed method's performance.
• Demonstrated improvement in the performance of phase gradient autofocus with the new target selection criteria.
• Showed that isolated point targets lead to enhanced image quality in simulated SAR scenarios.

Abstract