Available Technologies

In general, radar is not considered to be useful in penetrating water, but in the case of fresh, non-conductive water, considerable penetration is possible. There are many examples in the literature of radars profiling the bottom of lakes at depths exceeding 30ft. In sea water, with a conductivity of 4000 mmho/m radar is of no use, and one has to employ either acoustics (sonar) or magnetics to locate hidden or lost target materials.

In general radar is not the technique of choice, since an acoustic image is usually superior in detail and reliability. However if detection of conducting targets is desired there is a case for employing both techniques simultaneously. The addition of a magnetic sensor means that the data will contain information on the presence of sunken targets, whether they are metallic, and whether the metal is or is not ferrous. IRC has experience in underwater radar and magnetic data analysis, and has associates who have experience in working with sonar data, although we do not claim it as one of our strengths.