The line of geophones is then moved and the process repeated. In any event, positioning the probes and receivers at varying distances will provided guidance on the spot. The number of probes used in an interesting area and the nature of the signals returned determines the detail of the images such scans can give. The morphology of those images is the main purpose of the CPU, as is the processing of the video images taken during the work. It is essential that the researchers see every bit of information from each sounding as they possibly can.
Second looks require second soundings.
This is far beyond what is available off the shelf at present and would represent a major breakthrough in Egyptology. Imaging technique with electromag- netics is well advanced, but because of coupling problems, acoustic imaging techniques were less so. We have an advance in hand and want to use it. This technique has already been tested in another venue. A group at Shiqmim in the Negev Desert in Israel has used a similar system.