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[ home ] Phone : 604-485-0205
FAX  : 604-485-0200
E-mail: paul@atek-surveys.com
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EQUIPMENT/TECHNOLOGY

Atek uses echosounders incorporating narrow beam transducers. Rather than the standard 8 degree beamwidth, ours use a 2 ˝ degree beam for greater accuracy on steep slopes. For shallow work and when speed is essential, we use a Bruttour digital sounder. For deep water, we use a modified Raytheon 719 survey sounder which is crystal-controlled for accuracy. The Raytheon's familiar analog chart can also be used to confirm digital data when surveying more difficult areas with irregular bottom profiles. The company uses a highly accurate GPS positioning systems to track the survey launch. Positioning data is relayed by radio-modem to a computer on the launch. Positioning and depth data is collected simultaneously and graphically displayed for the launch operator. Data is plotted to all requirements as well as presented in digital form.

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POSITIONING EQUIPMENT:

Atek Hydrographic Surveys use Topcon-Javad 20 channel, dual frequency (L1-L2) base and rover RTK GPS systems. These are coupled with high power Pacific Crest radio modems to produce long range accurate positioning data, or navigational output. Software and associated computer systems allow us to survey large areas from single set-ups with a high degree of reliability and accuracy. Multiple displays are available on larger vessels, providing a surveyors screen, a helmsman’s display, and other specialized outputs such as cable tensioning data. Most navigation and data collection software is custom written for Atek.

These systems are portable and fast to set up. When local monuments are available accurate control can be established quickly, otherwise, control position data is collected for several hours and post processed with the Canadian Spatial Reference System’s online Precise Point Positioning service. This then provides cm level accuracy on an RTK basis.

On larger jobs, if for any reason the primary system were to fail, two systems are normally set up for redundancy. (This has never been required)

Data is collected on modern military grade Itronix Go Book III laptops or Husky field computers which can stand the extreme elements experienced on some jobs.


DATA PROCESSING

Once the field data has been collected and verified, the data is processed via several different software programs. Depending on the job, we have the capability to output your final result in most graphical data formats. Most bathymetric surveys can be processed via Terramodel, Terrain, or Surfer. These programs all have different capabilities, and our technicians are able to choose which is best for your particular job. Deliverables to the client can be in the form of bathymetric charts, autocad files, (.dwg, .dxf), digital terrain models, etc.. We have the in house capability to produce colour plots up to 3 ft x 50 ft.

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DEPTH SOUNDER:

Atek has two sounders. For depths under 100 meters we use a Bruttour digital sounder with centimeter resolution. For depths to 220 meters we use a modified Raytheon 719 analog sounder, with crystal-controlled depth reading and time marking. Both sounders are equipped with narrow-beam (2 ˝ degree) transducers.


SURVEY VESSELS:

Atek has a new purpose-built, stable, 12-foot survey vessel. Constructed of light welded aluminum, it is easily launched in remote areas without the benefit of a ramp. For large jobs, our new 23 foot survey vessel can handle most any project up to 30 km offshore.

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OPTICAL EQUIPMENT:

- GEODIMETER
- SOKKIA
- TOPCON
- PULSAR