Efficient Signal Processing for Frequency-Agile Radar With Limited Computational Resources

Frequency-agile radar provides strong anti-jamming capabilities, but its performance is limited by the coupled phase terms arising from target range, velocity, and carrier frequency during coherent accumulation. Existing methods often require substantial computational loads, making them impractical for resource-constrained platforms. This letter proposes a fast high-resolution range profile (HRRP) generation method that eliminates velocity compensation. The key lies in a specially designed waveform that transforms the velocity-related phase into linear phase components. Through the conjugate multiplication of echoes, the linear velocity-related phase is converted into a constant term that enables direct HRRP generation via FFT. Simulations show that the method maintains imaging quality while achieving higher computational efficiency, providing a feasible solution for resource-limited radar platforms.