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A modified coherent hough method for pulse-train signal integration

A coherent Hough method is proposed here to integrate the pulse-train signal. Based on a narrowband echo model, the suggested method implements the coherent integration by compensating the modulated phase terms from pulse to pulse before applying Hough transform. The improved method outperforms standard Hough transform, particularly in a very low SNR environment. The algorithm's performance is analyzed and its validity is further verified by simulation experiments.