Buried target detection based on time reversal by probing beam

Buried target detection under the background of intensive reverberation in shallow water is a complicated problem. As the target is buried, the echo of the active sonar is very weak and the echo-to-reverberation ratio is quite low. In the paper, the technique of buried target detection based on time reversal (TR) by probing beam without a probe source (PS) is discussed. Firstly, the technique of TR transmission without a PS is presented. Secondly, the procedures of echo signal processing is introduced. Finally, The waveguide experiment provides a practical implementation guideline to apply the techniques to buried target detection.