convesion of curved-surface data into borizontal-plane data
data processing for piecing together various 3 D data sets
ratio of test data to design data
seismic data transmission data
test data and the highest data
150 ton Sea Surveillance Ship
Absenteeism surveillance
active laser surveillance
activity surveillance for building
Acute Flaccid Paralysis Surveillance
aerial surveillance systems
Aetiological surveillance
air pollution surveillance system
Air Surveillance Intelligence Radar
airport surveillance radar