Glosarium

Istilah kunci dalam survei profesional dan teknologi geospasial.

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GDOP

GDOP ay isang sukatan ng geometric na kalidad ng mga satellite na posisyon na ginagamit sa GPS surveying.

Geodesy

The science of measuring and mapping the Earth's shape, size, and gravitational field.

Geofencing

A location-based technology that uses GPS, RFID, or cellular data to create virtual boundaries around physical locations for triggering automated actions or alerts.

Geoid

The equipotential surface of Earth's gravitational field that best approximates mean sea level and serves as the reference for measuring elevations.

Geoid Undulation

The vertical distance between the ellipsoid and the geoid at a specific location on Earth's surface.

geomatics

Geomatics is the discipline that integrates surveying, mapping, and spatial information technologies to collect, analyze, and manage geographic data.

Georectification

Georectification is the process of aligning and transforming geographic data or images to match a known coordinate system and map projection.

Georeferencing

The process of assigning geographic coordinates to spatial data such as maps, images, or documents to align them with real-world locations.

Geospatial Data

Information about physical locations and features on Earth's surface, referenced by geographic coordinates and used for mapping, analysis, and decision-making.

GeoTIFF

GeoTIFF is a geospatial data format that embeds georeferencing metadata directly within standard TIFF image files to enable precise geographic positioning and analysis.

gimbal

A pivoted support that allows an object to rotate freely in any direction, commonly used in surveying instruments to maintain level orientation.

GIS

GIS yog ib qhov system uas siv cov ntaub ntawv geospatial thiab mapping technology los tshuaj xyuas thiab tswvyim cov ntaub ntawv ntawm lub ntiaj teb.

GLONASS

GLONASS is a Russian satellite navigation system that provides positioning and timing information globally, similar to the American GPS system.

GNSS

Global Navigation Satellite System (GNSS) is a satellite-based positioning system that provides accurate location, velocity, and time information worldwide.

GNSS Signal Processing

GNSS Signal Processing refers to the techniques and algorithms used to acquire, track, and decode signals transmitted by Global Navigation Satellite System satellites to determine precise positions and timing information.

GNSS天线

GNSS天线是接收全球导航卫星系统信号的专用设备,用于测量中获取准确的位置坐标和时间信息。

GPS

GPS inu teknolohiya na gumagamit ng satellite para sa tumpak na pagsusukat ng lokasyon at distansya sa lupain.

GPS Week

A unit of time used in GPS navigation systems where one week equals 604,800 seconds, with weeks numbered sequentially since January 6, 1980.

Grade Control

The process of establishing and maintaining proper elevations and slopes during construction to ensure structures meet design specifications and functional requirements.

ground filtering

A surveying technique that removes non-ground points from LiDAR data to create accurate digital elevation models.

GRS80

GRS80 is the Geodetic Reference System of 1980, an international standard ellipsoid used as the reference surface for geodetic measurements and coordinate systems.

GSD

GSD hè a misura di a risoluzione spaziale di l'imaghjini satèllite o aeree, chì indica a dimensione di ogni pixel nantu à u terrenu.

HDOP

HDOP ay ang isang sukatan ng geometric na kalidad ng satellite geometry para sa horizontal na positioning accuracy sa GPS surveying.

Heave Pitch Roll Compensation

A dynamic correction system that eliminates vessel motion artifacts (heave, pitch, and roll) from survey measurements in marine and hydrographic applications.

horizontal circle reading

The measurement of horizontal angles using the graduated circle of a surveying instrument positioned in a horizontal plane.

Hydrographic Datum

A reference surface or coordinate system established for measuring water depths, elevations, and positions in marine and hydrographic surveying operations.

Hydrographic Survey

The systematic measurement and mapping of water bodies, their depths, currents, and physical characteristics for navigation and safety purposes.

ICP Algorithm

A computational method for aligning three-dimensional point clouds by iteratively minimizing the distance between corresponding points.

ICP Iterative Closest Point

ICP (Iterative Closest Point) je algoritam koji se koristi za precizno poravnavanje dvije točke oblaka pronalaženjem optimalnog 3D prostornog transformiranja između njih.

IFC

IFC ay isang pandaigdigang pamantayan para sa digital na pagbabahagi ng impormasyon sa industriya ng pagtatayo.

IFC - Industry Foundation Classes

An open international standard data model for building information modeling (BIM) that enables interoperability between surveying, design, and construction software applications.

IHO S-44 Hydrographic Standards

International Hydrographic Organization standards establishing specifications for hydrographic surveys, data accuracy, and maritime safety documentation.

Integer Ambiguity Resolution

The process of determining the correct whole number of carrier wavelengths in GNSS positioning to achieve centimeter-level accuracy.

intensity

A measure of the strength or magnitude of a physical quantity, such as light, sound, or earthquake waves, per unit area or volume.

intersection survey

A surveying method that determines the position of a point by measuring angles from two or more known reference points.

iono free

Iono free refers to the ionosphere-free linear combination used in GNSS surveying to eliminate first-order ionospheric effects on signal propagation.

ionospheric delay

The retardation of electromagnetic signals as they traverse the ionosphere, affecting the accuracy of surveying measurements.

ISO 17123

International standard that specifies field procedures for testing and evaluating the accuracy and performance of surveying instruments used in geodetic and construction measurements.

ISO 19650 BIM Standards

International standards that define information management processes and frameworks for Building Information Modeling (BIM) throughout the asset lifecycle.

Kalibrazzjoni

Il-proċess ta' aġġustament u verifika ta' istrumenti tal-misurar biex jiżguraw li jagħtu riżultati preċiżi u affidabbli.

Kinematic GNSS

A real-time satellite positioning technique that determines precise coordinates of moving receivers by processing continuous GNSS signals with fixed base station corrections.

KML/KMZ

KML (Keyhole Markup Language) ir KMZ (compressed KML) yra XML pagrįsti failų formatai, naudojami geografinei informacijai ir žemėlapių duomenims saugoti bei dalintis.

Konturlinjer

Konturlinjer er linjer på et kart som forbinder punkter med samme høyde over havet og viser terrengets form og helning.

Köprü Araştırması

Köprülerin yapısal bütünlüğünü, güvenliğini ve fonksiyonelliğini değerlendirmek için yapılan sistematik ölçüm ve inceleme işlemidir.

L1 L2 L5

GPS signal frequencies used in surveying and positioning applications for precise location determination.

Lambert Projection

A conformal map projection that preserves angles and is commonly used for mapping regions with east-west orientation.

Land Title

A legal document that establishes ownership and rights to a parcel of land.

las format

Un formato de archivo estándar para almacenar datos de nubes de puntos tridimensionales capturados mediante tecnología LiDAR o escaneo láser.

las lidar format

A binary file format standard for storing and exchanging three-dimensional point cloud data acquired through Light Detection and Ranging technology.

Layout Survey

A surveying process that establishes and marks precise positions for construction projects based on design plans and calculations.

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