Specific-Velocity Moving Target Selection and Detection Method for High-Temporal Spaceborne SAR

To address the presence of multiple moving targets with varying velocities in high-temporal spaceborne synthetic aperture radar (SAR), this paper proposes a tailored selection and detection method for moving targets with specific velocities. By leveraging the extremely high temporal resolution of such SAR systems, the method adjusts temporal features of moving targets through echo segmentation, thereby enhancing the discrimination between targets with varying velocities. A combination of kernel function-based high-dimensional mapping and line segment detection is then employed to effectively extract the desired targets. Experimental results demonstrate that the proposed method exhibits strong velocity selectivity and robustness, even under low signal-to-noise ratio (SNR) conditions, making it well-suited for large-scale dynamic monitoring.