Technologies
TerraSond's knowledge and ability to manage new technologies enables us to play a key role in the surveying and mapping industry.
We own and maintain a large suite of complex software and equipment that is necessary for executing accurate land and hydrographic surveying and mapping. The technology includes specialized tools for obtaining measurements and performing calculations on land and water that are essential for creating, editing and analyzing spatial and attribute data.
We support our staff's ability to manage new technologies by providing additional education and training. We also encourage hands-on experience to increase the conceptual understanding of geographic information systems (GIS) and their practical application for our projects.
Sound Velocimeters
TerraSond uses sound velocimeters, or SVPs (sound velocity probes/profilers) to measure the speed of sound through a water column. The speed of sound varies, depending on temperature, salinity and depth of the water.
SVPs have one pressure sensor to measure depth, a transducer and a reflector. The sound velocity is calculated using the two-way travel time of an acoustic signal between a transducer and reflector.
On site sound velocity is used to calibrate and process singlbeam and multibeam sonar data. True sound velocity in the water column is determined so that accurate depth measurements can be obtained.
Multibeam and sound velocity data is collected then processed using CARIS's hydrographic processing software. Using CARIS, soundings from the multibeam sonar system are adjusted for sound velocity.
Applied Microsystems Smart Sensor
The SV&P Smart Sensor is designed to measure sound velocity and pressure in water and is ideal for integration into existing data collection platforms or OEM equipment. 
Applied Microsystems SVPlus
The SV Plus sound velocimeter is a lightweight, rugged, intelligent profiler which records high resolution sound velocity profiles of a water column to depths of 5,000 meters. 
Lockheed Martin XBT/XSV Profiling System
Lockheed Martin expendable profiling systems offer antisubmarine warfare (ASW) specialists and oceanographers a fast, accurate, cost-effective means of collecting environmental data without restricting ship operation. 
ODIM Brooke Ocean MVP200
The ODIM Brooke Ocean Moving Vessel Profiler (MVP) greatly enhances the productivity of CTD, Sound Velocity and other specialized profiling by allowing deep water casts to be made from an underway vessel. 
Odom Digibar Pro
Used primarily to calibrate acoustic systems, DIGIBAR PRO offers a fast and safe method for sound velocity calibration as compared to the traditional "bar-check". 
Reson SVP 71
The RESON SVP 71 sound velocity probe developed for fixed-mount installation on surface ships, outboard rigs, submarines, AUVs, ROVs and other self-propelled platforms, uses a direct path echosounding technique that compensates for temperature and pressure with internal sensors.