SOS support for dumb sensors mounted on platforms

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SOS support for dumb sensors mounted on platforms

Ruiz Lopez, Dario

I have to interface with some dumb sensors that are mounted on a drone. The drone itself has a GPS sensor and is sending their coordinates. What the sensor providers are currently doing is sending the name of the sensor together with their measures. This way, the service receiving the measures is able to infer the position of a sensor from the measure provided by the GPS sensor mounted on the drone whose name is equal to the one provided by each sensor. That is, the drone is acting as a platform with GPS capabilities where some dumb sensors are mounted.

 

But this is not compliant with SOS, and I want to provide a standard SOS server to support this situation, which is relatively common. But I do not get to find any field in the sosInsertObservation.xsd that allows me to cross the measure of a sensor with another sensor to get its geographical position. There is an example from 52North that registers a set of sensors with a position but it does not fit my problem, because the drone will act as a moving platform, and hence I need to update the position for each measure.

 

Right now, the only solution I can think of is to use the call to registerSensor to record the set of sensors of the platform and extract the GPS sensor from them, looking for the one whose observed property has position type. This, added to the sensor identifier reported in insertObservation, would allow the service to look for the corresponding GPS sensor, get its last measure, and use it. But this approach has a huge drawback: it is specific for my system and it will work only with my specific procedure for selecting the proper GPS sensor. The idea for using a standard is creating interoperable components, but this solution would possibly not work with any other platform that .

 

Does SOS support any way for a sensor to specify that its position is provided by another one?

 

Thank you

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Re: SOS support for dumb sensors mounted on platforms

Carsten Hollmann
Hi Dario,

you can use the O&M 2.0 SpatialObservation to insert the measures with a
location.

The location (sampling geometry) is defined as om:parameter and with the
OGC SOS 2.0 Spatial Filtering Profile you are able to apply a spatial
filter on the sampling geometry.

See this post about how to insert a mobile sensor and how to insert
observations with the sampling geometry:

http://sensorweb.forum.52north.org/Mobile-sensor-guide-lines-tp4028973p4028976.html

Best,
Carsten
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