GRB

Right Hand Circular Polarized

Form of Circular Mode positioning, it is a passive position system where the vessle contains a clock, synchronized to the clocks in the on-shore transmitters, where range is calculated from the ddifference between the time of signals.

Marine Positioning where ranges and azimuths are measured from an on-shore station, similar to Range-Range Mode.

Imaginary line for plotting navigation on charts, it cuts across all the meridians at the same angle.

An angle equal 90°

Receiver Independent Exchange Format

Occurs when two oppsng current meets.

Buffer zone consisting of areas next to water bodies (e.g., streams) with vegetation and can be affected by the presense of water.

Booking method for levelling using rise-fall of position.

Reduced Level

Root Mean Square

A Compromise map projection that shows the entire world, representation of the whole globe as a flat image, though there are distortions on the polar regions.

Natural occuring solid substance formed from one or more minerals.

Rotation on X-axis.

Statement of purpose for project, describing the need and reason for the project.

The square root of the mean of the square of sum of the error.

A formal approximation of a crisp set in terms of a pair of sets which give the lower and the upper approximation of the original set.

Path for travel, generally for use in network and path analysis, made up of existing line features on a map. Type: 1) Simple Route 2) Combined Route 3) Split Route 4) Looping Route

GPS reciever(s) in GPS survey with unknown positions, could be constantly moving between locations.

Range Rate Correction

Real-Time Differential Global Positioning Satellite

Real-Time Kinematic Mode

Real-Time Network

Process of adjusting coordintes of points to allow for a more accurate match between known points an dataset.

Oscillator using Rubidium element to measure precise time.

Data compression where sequences of data with the same value are stored as a single data value and count/number of occurances.

Water draining away from surface of area of land, building and/or structures.

Part of the Microwave band ranged between 2GHz - 4GHz in EM spectrum, it is mainly used in weather radar, surface ship radar and some communication satellites.

Selective Availability

Caused by the gravitational force exerted onto measuring tape over long distances, it can cause errors in reading horizontal distances.

See Definition on Nyquist-Shannon Theorem

Loose granular material typically a result from erosion or rocks.

Determining distance between the satellite and target by measuring time taken for the (radar) signal from satellite-to-target then back to satellite.

Difference between Satellite clock time and GPS time, it can be derived from Navigation Message.

Difference between the collected data and real orbital position of a GPS satellite

Information sent within the Navigation Message regarding the status of the Satellite (e.g. possible clock errors).

Images collected by artificial satellites.

Measuring of distance to satellite through the use of a sophisticated EDM (laser) aimed from earth to retro-reflector equipped satellites.

Height and shape of satellite orbits are determined by the velocity of which they travel at.

Apply satellite image into remote sensing research.

Surveys on ground features using Remote Sensing/Photogrammetric techniques.

Period of time the largest number of satellite is available simultaneously from a specific location.

It largely meets the intended subject learning outcomes.

Space-Based Augmentation System

A vector based image in XML format.

An expression about that one unit of distance on a photograph represents a specific size of real ground distance

Ratio of local scale to reference scale.

Graph of plots against two axes.

Fluctuation of amplitude and phase of wave when passing through a medium.

The extent of investigation