Monday 20 January 2014

Observations and Measurements

Observations and Measurements (O&M) is an International Standard which describes a theoretical scheme encoding for observations, and for traits engaged in sampling when making observations. While the O&M standard was built up in the context of geographic information systems, the model is derived from generic patterns proposed by Fowler and Odell, and is not restricted to spatial information. O&M is one of the core standards in the OGC Sensor Web Enablement suite, offering the response model for Sensor Observation Service (SOS).

O&M identifies a core set of properties for an observation:
  • feature of interest
  • observed property
  • result
  • procedure - the instrument, algorithm or process used (which may be described using SensorML)
  • phenomenon time - the real-world time associated with the result
  • result time - the time when the result was generated
  • valid time - the period during which the result may be used



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