A Novel Approach for Establishing Clear Regions in Multi-PRF Pulse Doppler Radar Systems

A novel approach for establishing clear regions in multi-pulse repetition frequency (PRF) pulse Doppler radar is proposed. The clear regions are constructed using the sigmoid function, resulting in a continuously differentiable functional expression for the clear region area. This allows for optimization using gradient-based methods. Compared with Clear Area Evaluation Matrix (CAEM) and Blind Zone Map (BZM) method, the method proposed breaks the limitation of optimization method. Simulation experiments demonstrate that the proposed method achieves a larger clear region area compared with the CAEM and BZM method.