A satellite-based location and data collection system.


Related Terms

PLANE CORRECTION

A correction applied to observed surveying data to reduce them to a common reference plane.

PILOT BALLOON

A small balloon whose ascent is followed by a theodolite in order to obtain data for the computation of the speed and direction of winds in the upper air.

PHOTONICS

The electronic technology involved with the practical generation, manipulation, analysis, transmission, and reception of electromagnetic energy in the visible, infrared, and ultraviolet portions of the light spectrum. It contributes to many fields, including astronomy, biomedicine, data communications and storage, fiber optics, imaging, optical computing, optoelectronics, sensing, and telecommunications. Also known as optoelectronics.

PEEL-OFF TIME

In seismic prospecting, the time correction applied to observed data to adjust them to a depressed reference datum.

PECLET NUMBER

Dimensionless group used to determine the chemical reaction similitude for the scale-up from pilot-plant data to commercial-sized units; incorporates heat capacity, density, fluid velocity, and other pertinent physical parameters.

PANTOGRAPHY

System for transmitting and automatically recording radar data from an indicator to a remote point.

OUTPUT-LIMITED

Restricted by the need to await completion of an output operation, as in process control or data processing.

MICROCONTROLLER

A microcomputer, microprocessor, or other equipment used for precise process control in data handling, communication, and manufacturing.

MARKET ANALYSIS

The collection and evaluation of data concerned with the past, present, or future attributes of potential consumers for a product or service.

INSTRUMENT SYSTEM

A system which integrates one or more instruments with auxiliary or associated devices for detection, observation, measurement, automatic control, automatic computation, communication, or data processing.

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