Then I suppose a broadband RF detector can be made by aligning a tube of brine towards a source. Alternatively a 3D microphone array could be employed in an ocean.
External noise floor probably sets the maximum sensitivity, but should be possible to process most external noise out
Then I suppose a broadband RF detector can be made by aligning a tube of brine towards a source. Alternatively a 3D microphone array could be employed in an ocean.
External noise floor probably sets the maximum sensitivity, but should be possible to process most external noise out