Sensor Platform System Transducer value

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4.21 Process Chain

Composite processing block consisting of interconnected sub-processes, which can in turn be Process Models or Process Chains. A process chain also includes possible data sources as well as connections that explicitly link input and output signals of sub-processes together. It also precisely defines its own inputs, outputs and parameters.

4.22 Reference Frame

A coordinate system by which the position location and orientation of an object can be referenced.

4.23 Result

an estimate of the value of some property generated by a known procedure [OM]

4.24 Sample

A subset of the physical entity on which an observation is made.

4.25 Sensor

An entity capable of observing a phenomenon and returning an observed value. In SensorML, modeled as a specific type of System representing a complete Sensor. This could be for example a complete airborne scanner which includes several Detectors one for each band.

4.26 Sensor Model

In line with traditional definitions of the remote sensing community, a sensor model is a type of Location Model that allows one to georegister observations from a sensor particularly remote sensors.

4.27 Sensor Platform

An entity to which can be attached sensors or other platforms. A platform has an associated local coordinate frame that can be referenced to an external coordinate reference frame and to which the frames of attached sensors and platforms can be referenced.

4.28 System

Composite model of a group or array of components, which can include detectors, actuators, or sub-systems. A System relates a Process Chain to the real world and therefore provides additional definitions regarding relative positions of its components and communication interfaces.

4.29 Transducer

An entity that receives a signal as input and outputs a modified signal as output. Includes detectors, actuators, and filters.

4.30 value

member of the value-space of a datatype. A value may use one of a variety of scales including nominal, ordinal, ratio and interval, spatial and temporal. Primitive datatypes may be combined to form aggregate datatypes with aggregate values, including vectors, tensors and images [ ] ISO11404 . Copyright © 2007 Open Geospatial Consortium, Inc. All Rights Reserved. 22 S e n s o r M o d e l L a n g u a g e O G C 0 7 - 0 0 0 5 Conventions

5.1 Symbols and abbreviated terms