Surveying Glossary — Letter M

Istilah kunci dalam survei profesional dan teknologi geospasial.

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machine control

Automated systems that guide and monitor heavy equipment position and elevation during construction and earthwork operations.

Marine Survey

A systematic measurement and examination of coastal waters, seabeds, and maritime features for navigation, resource management, and engineering purposes.

mean sea level

The average height of the ocean's surface calculated over a specific time period, used as the standard reference datum for measuring elevation and depth.

MEP Survey for BIM

A specialized surveying discipline that documents mechanical, electrical, and plumbing systems in existing buildings to create accurate Building Information Models for renovation and retrofit projects.

Mercator Projection

A cylindrical map projection that preserves angles and maintains accurate compass bearings, making it essential for maritime navigation.

Mestre de Levantamento

Profissional experiente responsável pela supervisão e execução de trabalhos de topografia e mapeamento de terras.

metadata

Information that describes the characteristics, properties, and context of data or documents.

metes and bounds

A system of describing land by measuring distances and directions from a known point, using natural and artificial landmarks as boundaries.

MHW - Mean High Water

The average elevation of high tidal water levels observed at a specific location over an 18.6-year tidal cycle, used as a reference datum in coastal and hydrographic surveying.

miniprism

A small retroreflective prism used in surveying to reflect laser beams back to their source for distance measurements.

MLLW

Mean Lower Low Water is the average of the lower of the two daily low tides at a location.

Mobile Mapping

Mobile mapping is a surveying technology that uses vehicles equipped with sensors and cameras to collect geospatial data while in motion.

Monitoring Survey

A systematic measurement and observation process conducted at regular intervals to detect changes in physical features, conditions, or positions over time.

monument

A permanent physical structure or marker established to commemorate a significant historical event, person, or location.

Multibeam Echo Sounder

A sonar system that simultaneously transmits and receives multiple acoustic beams to map seafloor bathymetry and underwater features with high resolution and efficiency.

Multibeam Patch Test

A calibration procedure that verifies the geometric alignment and angular offsets of multibeam sonar transducers relative to a vessel's reference frame.

multibeam sonar

A surveying technology that uses multiple acoustic beams to map seafloor bathymetry and features in a single pass.

multipath

Ang multipath ay isang kondisyon sa surveying kung saan ang GPS signal ay sumasalamin sa mga obstacle bago makarating sa receiver.

multipath error mitigation

Techniques used in surveying and positioning systems to reduce errors caused by signal reflections from nearby surfaces.

mvs

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