Capabilities
TerraSond's highly skilled and trained professionals have the ability to plan for and execute hydrographic, geophysical and land surveys that range from the very simple to the very complex. Data is collected and measurements are taken from both onshore and offshore and in waters ranging from shallow coastal to deep ocean. Using industry standard state-of-the-art equipment, TerraSond collects, processes, and stores a vast amount of oceanographic and hydrographic data.
Mapping & Charting
TerraSond's staff is highly skilled in office computations, GIS-based applications, AutoCAD, and many other surveying and mapping software programs. Our capabilities include raster to vector conversion, edge matching, attribute attachment to geographic features, georeferencing, utility mapping, data conversion in different GIS formats, plotting, and scanning.
TerraSond provides 2-D and 3-D mapping and charting of the ocean bottom for our clients. Our digital mapping services include surface modeling; orthophotography; cadastral mapping; hydrographic mapping; and map editing, finishing, and publishing.
We also prepare technical drawings and plans, which are used to build everything from roads and bridges, to port terminals, and to oil and gas pipelines.
Aerial Mapping
We use aerial photography on projects for clients requiring the mapping of large areas for change detection or planning. For these projects we manage the planning, horizontal and vertical control, subcontracted photography and analysis and final map generation.
We contract the photography and digital compilation fr… 
Electronic Navigational Charts
Electronic Navigational Charts are commonly used in navigational systems and ECDIS displays on vessels. They must conform to the IHO S57 standards to work properly.
We have both the experience and tools for creating, editing and managing electronic navigational charts (ENCs).
We regularly create them as deliver… 
Floodplain Mapping
We have provided the land, hydrographic and LiDAR surveys for updating flood plain maps. We were responsible for meeting FEMA and USACE specifications on the survey and managing the control survey, LiDAR mapping, river cross sections, Quality Assurance Data, Hydrographic Data and the processing and map creation. Data… 
GIS Mapping
Our experienced mapping technicians create complete GIS datasets from scratch, verify the accuracy and completeness of an existing GIS dataset, and establish ground control to rectify aerial and satellite imagery.
To support GIS analysis and mapping we use ArcView, CARIS, MapINFO, and AutoCAD MAP as well as other to… 
LiDAR Mapping
Light detection and ranging (LiDAR) has become widely accepted as a tool for generating highly accurate terrain models that are used in a variety of GIS applications. LiDAR collection systems use a combination of aircraft-mounted laser sensors along with a global positioning system (GPS) receiver to record elevations o… 
Map and Plat Production
Often the main product of our work is a map, plat or chart. These products are used to provide information in support of whatever the client intends to accomplish.
We can generate the products in CAD systems such as AutoCAD or Microstation or in GIS applications such as CARIS or ArcView. 
Nautical Charting
TerraSond collects hydrographic survey data to produce official nautical charts. These charts, depending on their scale show seabed features, navigational hazards, harbors and bridges, tides and currents, coastline, and navigational hazards.
We have the tools to plan, collect, process and then format either in hard … 
Topographic Surveying and Mapping
Topographic surveys gather data about natural and man-made features of the land, as well as its elevations. For these surveys our staff will establish horizontal and vertical control that will serve as the framework of the survey; determine horizontal location and elevation (side shots) of ground points to provide enou…