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Sensor Arrays
SensorHub aims to include good support for large sensor arrays by keeping generation of metadata and data for these big networks efficient.
One way to aggregate data from a large sensor network with SensorHub is to create a specific module that would represent the sensor array as a whole. This module would then be responsible for generating a data stream that interleaves data from the different sensors in the array.
Such a module should include the identifier of the source sensor in the generated output records, in a structure similar to:
time systemID meas1 meas2 ...
A sensor that includes a SystemID field in one of its outputs is treated in a special way when exposed through the SOS service. In this case, features of interest are automatically created for each different SystemID, so that individual sensors can easily be found by calling the GetFeatureOfInterest operation with a spatial filter.
Features of interest IDs are only listed in the capabilities document if there are less than the value specified in the SOS offering configuration (defaults to 20).