HAAPS: A Hydrographic Acquisition and Processing System used by the canadian hydrographic service

Since 1969 the Canadian Hydrographic Service has been active in the development of a semi-automated hydrographic survey system. The Hydrographic Acquisition and Processing System (HAAPS) employs hard-wired data loggers weighing 68 kilograms and having a power requirement of 350 watts at 24 volts d.c. Installed in 7.6-metre survey launches, the data loggers are used to record digital depth and position data on magnetic tape. A computer facility is carried on the mother ship. Depth data are edited by the computer to retain the deeps and shallows required to delineate the topography. The criterion is such that overprinting does not occur when the selected depths are plotted. Processed data will be eventually used as the input to an automated cartographic system.