GRB

AJAX progress indicator
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  • b

  • Block Operation
    Neighbourhood operation performed on a block, which assigns calculated values to all cells within the block.
  • BM
    Bench Mark
  • BMP
    Bitmap File
  • BOC Modulation
    Binary Offset Carrier Modulation
  • Bona Fide
    Done in good faith, with sincerity and honesty.
  • Boolean Connector
    Logical connectors to construct expressions. Type: 1) AND 2) OR 3) XOR 4) NOT
  • Boolean Data
    Data type that only has True or False as values.
  • Boolean Expression
    A set of logical expression in a programming language to produce True/False values when processed.
  • Boolean Operation
    See definition on Boolean Connector.
  • Boolean Statement
    See definition on Boolean Expression.
  • Boom
    Floating barrier placed on water surface to control navigation and/or protect water bodies.
  • Borehole
    Narrow shaft bored vertically/horizontally for the purposes of examining under-surface conditions or extraction materials.
  • Borehole Log
    Practice of making a detailed record of geological formations in a Borehole.
  • Bottom Imaging
    Documentation of seabed and sub-bottom materials relying on acousting impedance principles to detect density and type of material.
  • Bottom-up Approach
    Approach to design and implementation, where implementation starts from the base of the organization or where design is dictated from the bottom tiers of the organization.
  • Boundary
    Delineation between plots of land to show ownership, often marked by physical landmarks (e.g. fence, trees, boundary markers, etc…).
  • Boundary Evidence
    Proof of boundary for marked parcels of land/plots/property (e.g., Land Title, Deed, survey information, fence, physical marking of boundary lines on terrain, etc…)
  • Boundary Nodes
    Nodes where hydraulic grade is known (e.g., tanks, reservoirs).
  • Boundary Re-establishment
    Process which re-establishes the original survey with a field survey with the use of artifical features (e.g. survey mark, survey pegs, fence, building corners).
  • Boundary Survey
    Survey conducted to locate and/or establish legal boundaries of parcels of land/plots/property (e.g. physically establishing fence lines).
  • Bowditch Traverse Adjustment
    Method to adjust errors in bearings due to angular or linear inaccuracies where it assumes observations are all done to the same degree of precision and that misclosures could be logically distributed within the Survey Run.
  • Box Plot
    Graphical representation of statistical data shown as a rectangle to represent upper and lower quartiles, maximum and minimum value, and median value.
  • Box-Culverts
    Reinforced concrete box sections for culverts, storm drains and sewers, generally physically accessible.
  • BPSK
    Binary Phase Shift Keying
  • Brackish Water
    Water with more salinity than fresh water but less than seawater, generaly found in estuaries.
  • Break-through Survey
    Control Surveys used for monitoring underground construction and/or development (e.g. tunnelling).
  • Breakline
    Line feature that interrupts the slope of a surface (e.g., stream, shorelines, ridges, roads, etc…).
  • Breakwater
    Barrier built into the sea to protect the coast/harbour from force of waves.
  • Bridge
    To connect or reduce the gap between subjects and/or disciplines, make connections between ideas and knowledge from various subjects and/or disciplines.
  • Broad understanding
    Having a wide range of knowledge in the general sense, not limiting to the narrow profession or area of study.
  • Broadcast
    EM wave transmitted across large geographical area.
  • Broadcast Clock Correction
    Located within the Navigation message, provided by the Control Segment, it is the correction provided to the receiver to bring the satellite clock time with GPS time.
  • Brushing
    Method for manipulating and/or exploring dynamic data/map.
  • BS
    Backsight
  • Buffer
    Zones depicted on a GIS and/or imagery to show areas that satisfies certain conditions (e.g. vegetative buffer, stormwater buffer).
  • Buffer Feature
    Features created from Buffer Zones.
  • Buffer Zone
    Area at a specific distance from a spatial feature, to highlight areas around a feature.
  • Buffering
    GIS operation to create Buffer Zones at a specific distance from spatial features.
  • Building Envelope
    Area of land on the property that could be built (have buildings constructed).
  • Built Environment
    Man-made (cultivated) space/environment where people live, work, play and interact on a daily basis.
  • Built-up Areas
    Areas where development is present and has reached a certain density.
  • Bulk Modulus
    Reciprocal of Compressability, the relative change in volume when pressure is applied uniformly over the surface.
  • Bulking
    Increase in volume of earthworks after excavation.
  • Bundle Adjustment
    The problem of refining a visual reconstruction to produce jointly optimal 3D structure and viewing parameter estimates of the relative motion and the optical characteristics of the camera(s) employed to acquire the images.
  • Buried Water Carrying Services
    Sub-surface water utilities.
  • BWCS
    Buried Water Carrying Services
  • Byte
    A sequence of 8 binary digits to represent a single character.
  • c

  • C-Scan
    3D Profile of underground features using results processed from B-Scan.
  • C/A Code
    A pseudo-random code for satellites available to civilian GPS use.
  • CAD
    Computer Assisted Design