Surveyor

Surveyor may be purchased either as a complete suite of programs or as individual applications.
The programs are available as a single or as a discounted multi-user licensed.

Applications available:

Geodetic Conversions
Solar Position Calculations
Magnetic Variation
Survey Network Adjustment Using Least Squares Analysis
Grid to Grid Coordinates Shift
Boxin Transponder Positioning
Heading from Pitch and Roll
Tidal Prediction for Standard Port and Co-tidal locations
Transit Fix Position Check
Ultra Short Base LIne System Calibration
Speed of Sound in Water Calculation
Anchor Catenary Presentation & Calculation

Geodetic Converstions

Various geodetic computations including grid to geographical conversion, datum shift, range and bearing computation.
Also available bulk conversion of co-ordinates. See Geodetic

Solar Position Calculations

The software computes the azimuth to the sun from observations and using star almanac tables. This software can be used to calibrate a gyrocompass.

Magnetic Variation

Uses the The International Geomagnetic Reference Field (IGRF) model to determine the components of the magnetic field
vector a given location.

Network Adjustment

The software uses least squares to adjust a network points using measured ranges, bearings and position observations.
The software can be used for calibrating an acoustic network.

Grid on Grid

The software computes the relationship between two grid systems and then allows the operator to convert between the two systems.
Computation can be used for calibrating an acoustic network with a surface navigation system.

Boxin

To determine the position of a seabed transponder by observing acoustic ranges from a vessel sailing around the transponder.
The software uses sequential least squares to determine the position so there is no limitation on the number of observations taken.

Heading from Pitch and Roll
To compute and graphically display heading and tilt from pitch and roll readings

Tidal Predictions
The software computes and displays the tidal curve based on a standard port and tidal harmonics all parameters have been
obtained from the UK Hydrographic Office.

Transit Fix
The software from observations computes the position of the legs of a 3 or 4 leg structure and also the centre.

USBL Calibration

The software is used to calibrate an USBL navigation system, the software will compute the likely errors in range, alignment, pitch
and roll.

Speed of Sound in Water

The software can use the following formulae to compute the velocity of sound in water.

Chen & Millero (1977)
Del Grosso
LeRoy
MacKenzie
Medwin
Wilson(full and simplified)
Woods.

The software also has the ability to produce velocity profiles from a series of points.

Anchor Catenary

Simple Catenary
Buoy on Line
Tug mode
Variable water depth
Pennant wire length
Adjustable Clearance
Graphical Display
Cursor Measurement
Vertical Scale multiplier