Surveying Glossary — Letter N

Istilah kunci dalam survei profesional dan teknologi geospasial.

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NAD83

NAD83 is the North American Datum of 1983, a geodetic reference system used for mapping and surveying across North America.

nadir imagery

Nadir imagery is aerial or satellite photography taken directly downward from above a location, capturing the area straight beneath the camera or sensor.

nadir point

The point on the ground directly below an aerial camera or sensor at the moment of exposure.

National Grid

A standardized system of reference lines and coordinates used to locate positions on maps and land surveys across a nation.

NDVI

NDVI ay isang numerical indicator na gumagamit ng visible at near-infrared na light upang masuri ang buhay ng halaman sa isang larangan.

Network Adjustment

A mathematical process that reconciles inconsistencies in surveying measurements by distributing errors systematically across all observations.

noise filter

A device or software tool used in surveying to remove unwanted signal interference and improve measurement accuracy.

normal distribution transform

A statistical method used in surveying and point cloud registration that represents 3D surfaces as probability distributions for accurate spatial alignment.

NSRS

Sistema Nacional de Referência Espacial que estabelece o framework geodésico padrão para mapeamento e posicionamento preciso no Brasil.

NTRIP

NTRIP ay isang network transmission protocol na naghahatid ng real-time kinematic (RTK) correction data sa mga surveying instruments sa pamamagitan ng internet.

Nyanja ya Macho

Nyanja ya Macho ni eneo linaloweza kuonekwa kutoka mahali fulani bila kugeuka kichwa au jicho.