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- ImpreciseLack of accuracy and/or detail.
- In-depth KnowledgeThe highest level of understanding of required knowledge areas in which there is not only mastery of fundamental knowledge, but also a development of appreciation.
- In-lining ReplacementSee Definition on Cured In-Place Pipe
- InadequateIt fails to meet many of the intended subject learning outcomes.
- Inbound RunWhere survey boat is moving towards the shoreline.
- Incident AngleThe angle between the incident rader beam at the ground and the normal to the ground surface at the point of incidence
- IncompletenessLack of data points/values causing errors in the system output.
- IndefiniteUnexplainable data, data that cannot clearly be understood and often hard to be integrated for analysis.
- Independent BaselineBaselines observed using GPS positioning, usually the shortest baselines (or baselines with the least amount of biases) in a GPS network.
- Index ModelsSimilar to a binary model but produces an index value, it is used to calculate index value for each area and produces a ranked map.
- Indexed FilesComputer file structure that allows faster search, each file is allocated with an indexed location.
- Indicator KrigingKriging that uses binary data (1 and 0).
- Indirect ObservationWhere measurements cannot be directed observed (taken) through instruments and has to be determined through relationships of other observed values.
- IndiscreteData that is not distinct.
- InductionMap Generalization technique where there are inferences of the relationships between symbols/features/data.
- Inductive ModelModel that represents the conclusion derived based on derivation from observations and empircal data
- Industrial SurveySurveys of low tolerance measurements made in manufacturing processes.
- InertiaThermal inertia, a measure of the response of a material of temperature changes.
- Inexact InterpolationMethod of interpolation where the predicted value differs from the known value.
- InexactnessData that lacks accuracy and precision.
- InformationCollection of meaningful data/values that could be interpreted into a situation.
- Information IntegrationMerging of information from a variety of sources that could have differing conceptual, contextual and typographical representaions.
- Infrared ThermometerOperating in the range of 8-14 µm, to display radiant temperature on a LCD monitor.
- InfrastructurePhysical structures/facilities in the network (e.g., computer infrastructure).
- InheritanceIn programming it is often referring to the process which data can take on the characteristics of a particular class or taking on the behaviour from a set of codes.
- Ink SpreadA malfunction in printing where ink pixels have spread causing inaccuracies and bluring of images.
- Inner OrientationInternal orientation of air camera during photography.
- InstantiationWhere an object from one class can create a new object from another class.
- Instrument CalibrationProcess to establish and maintain accuraction of instrument, minimizing potential systematic errors in observations/measurements.
- Instrumental ErrorsType of Systematic Error that affects accuracy and precision of measuring equipment, can be minimized through callibration.
- InsulatorMaterials that hinders electric flow.
- Integer AmbiguitySee definition on Cycle Ambiguity.
- Integer RasterRaster contain cells with integer values.
- IntegrateTo bring together the existing knowledge, concepts and elements either from area of study or from other disciplines to formulate solutions to problems or fill in gaps of knowledge.
- Integrated Data Management SystemA network database management system for mainframes.
- Intelligence Reconnaissance Imagery SystemAn optical imagery system equips with a high-resolution panoramic camera for various surveillance and reconnaissance purposes.
- InterfacePlatform for interaction.
- Interference FilterAllow to acquire the short wavelenght transmittance and extremely desired narrow bandpass characteristics.
- InterferometryThe measurement of the difference between phases of signal from a common source travelling at different paths.
- Interior AnglesAngles observed within a closed polygon.
- Intermediate FrequencyWhere the carrier signal (transmitted signal) is mixed with another signal (generally the target return signal).
- Intermediate SightReadings of height measurement after the Backsight towards other points of interest (with the exception of the final point/BM) during the level run in a single setup.
- Intermittent-static PositioningSee definition on Pseudokinematic Positioning/Survey.
- Internal ReliabilityThe ability that redundant observations have in detecting and identifying errors.
- Internet ProtocolStandard language for the communication of systems across the internet (e.g., transfer of data TCP/IP, display of data HTTP).
- InteroperabilityThe ability of making systems and organizations work together (inter-operate).
- InterpolationMethod for constructing new data points within existing set of discrete data points to make better sense of the situation.
- InterpositionPerception of a object on a diagram/map to be in front of (occupying higher ground) when compared to background/objects at back.
- InterpretAbility to explain data, images, and translate the given data (like remote sensing images) into useful information and present clearly and coherently.
- Interrupted ProjectionsProjection where shape (terrestrial surface) is cut to avoid possible distortion.