Surveying

GPX currently has a core group of eight surveyors, representing more than 90 years combined experience, with expertise in conventional survey and GPS technologies. Clients look to GPX for a variety of services ranging from permitting the prospect to land clearance supervision, pipeline location through to final release of the permits from the landowners. We are well equipped to provide our expertise on any size program, 2D or 3D, track or wheeled, in addition to marine seismic. Reliable personnel are available along with the necessary equipment to meet our clients' demands.

Mapping

Access/exclusion maps are produced by our in-house GIS mapping department. A combination of field scouting with handheld GPS receivers and aerial photography are used to interpret cultural features and potential obstacles. The use of specialized software enables digitization and ortho-correction of photographs to format the basis for map production. These easy to read GIS maps provide our clients with an invaluable planning tool for geophysicists and recording crews. GPX Surveys foresees growth opportunities for its mapping products in many areas other than seismic surveying and is pursuing further exposure in these areas, including forestry, land management, mining, and environmental groups.

Click Here for a Sample Map

Community Base Station

The GPS Community Base Station automatically collects base files and outputs real time corrections, with which users can differentially correct GPS rover files. Located in south/central Alberta, our base station has a coverage radius of approximately 300 miles (500 km). providing post-processing base file data for mapping applications and barometric/GPS survey processing. GPX can also respond to requests for base station data files for use by various professionals in the environmental industry. The accuracy of rover positions is less than 5m at the coverage boundary. If the rover averages the data over 3 minutes at a site, the accuracy is improved to within 2m and decreases by 1m for every 100 miles.

Barometric Pressure & GPS

The innovative nature of GPX Surveys has led to the integration of barometric pressure with GPS technology. A highly sensitive quartz barometer is interfaced with a GPS receiver and in conjunction with our own customized software, height values are extracted from pressure readings. The pressure readings combined with coordinates from the GPS receiver provide sub meter accuracy under varying tree canopies. The combination of GPS receivers and barometric pressure have been successfully utilized since the spring of 1997.