What is Geomatics?

Geomatics is the discipline of gathering, storing, processing, and delivering geographic information, or spatially referenced information. - Wikipedia 

“Geomatics engineering is a modern discipline, which integrates acquisition, modelling, analysis, and management of spatially referenced data, i.e. data identified according to their locations. Based on the scientific framework of geodesy, it uses terrestrial, marine, airborne, and satellite-based sensors to acquire spatial and other data. It includes the process of transforming spatially referenced data from different sources into common information systems with well-defined accuracy characteristics."University Of Calgary

Reference: http://en.wikipedia.org/wiki/Geomatics