PINGER SBP, a new product offering by Knudsen Engineering, will provide researchers with an alternative to the challenges of shallow water sub-bottom profiling. PINGER’s large aperature receieve array provides higher directivity in a more lightweight package
PINGER also give the user the advantage of a wider bandwidth which allows simultaneous operation at multiple frequencies. The above graphic shows data collected transmitting and receiving on the same transducer compared to data collected with the PVDF receive array of the PINGER SBP.
The Pinger has been developed to provide an all in one Sub Bottom Profiler and Echosounder, The system makes use of one a proven Knudsen Chirp Echosounder, the 3212. This is a rack mounted dual frequency unit that is controlled by proprietary Sounder Suite software allowing high quality sub bottom data acquisition via a familiar user interface. You do not have to be a geophysicist to use a Pinger. The standard survey interfaces allow heave compensated records on both the 200kHz echosounder channel and also the 15kHz or 3.5kHz chirped SBP array. Data quality is impressive.

The overside transducer is a small lightweight assembly that produces heavyweight data quality and flexibility. The Pinger features chirp transmission and a large aperture receiver using the latest PVDF technology that provides higher directivity while remaining lightweight. Another advantage of the Pinger SBP receive array is its wide bandwidth. The same receive array can be used simultaneously for multiple frequencies. Designed to be very portable and lightweight the Pinger is well suited for small boats and shallow water applications that have been problematic with traditional SBP‟s on the market.

The user selects whichever SBP frequency that will best suit the seabed conditions. If you do need to change the main SBP frequency, simply lift the array and it only takes a few minutes to change over the 15kHz and 3.5kHz transducers.