Method and device for locating at least one target in an electromagnetically absorbent environment

A device for locating at least one target in an electromagnetically absorbent environment, comprising:

• at least one source for emitting at least one electromagnetic excitation signal;
• at least one acoustic sensor of an acoustic signal resulting from the emitting of the excitation signal;
• a calculator configured to detect, in the received acoustic signal by the acoustic sensor, a first time of receipt of a first response to the excitation signal, the first response resulting from an acoustic disturbance caused by an electromagnetic heterogeneity of the target in the environment, and to estimate a first distance between the target and the acoustic sensor using this first time of receipt;
• the calculator further configured to:
• detect, in the same received acoustic signal by the acoustic sensor, a second time of receipt of a second response to the excitation signal, the second response resulting from an acoustic disturbance caused by an acoustic heterogeneity of the target in the environment;
• estimate a second distance between the source and the target using the second time of receipt;
• and
• provide a locating of the target from the first and second estimated distances.