Sensor Web Archive - Page 16 of 29 - Blog

52°North Sensor Web Community at the FOSS4G 2013 Conference

September 9, 2013 by Simon Jirka Leave a Comment

Filed Under: 52°North, Sensor Web Tagged With: 52°North, FOSS4G, Presentation, Sensor Web, Sensor Web Enablement, SWE

Next week the FOSS4G 2013 Conference will take place in Nottingham. This is a great opportunity to meet geospatial open source enthusiasts from all over the world.

more >

52°North software on OSGeo Live 7.0

September 3, 2013 by Ann Hitchcock Leave a Comment

Filed Under: Communities, Geoprocessing, Sensor Web Tagged With: osgeo-live, Sensor Observation Service, SOS, WPS

OSGeo-Live 7.0 has been released! For this release, geospatial applications have been updated to their latest stable release. OSGeo-Live is a self-contained bootable DVD, USB flash drive and Virtual Machine based upon Ubuntu Linux (version 12.04 LTS). OSGeo-Live is pre-configured with a wide variety of robust open source geospatial software. All applications can be trialled without installing anything on your computer, simply by booting the computer from a DVD or USB drive, or running in a Virtual Machine environment. Each featured package is accompanied by both a publication quality one page descriptive summary and a short tutorial on how to get started using it. more >

Spatial Filtering and Time-dependent Sensor Descriptions for SOS

August 20, 2013 by Carsten Hollmann Leave a Comment

Filed Under: 52°North, Sensor Web Tagged With: 2.0, 4.0.0, 52°North, 52n, 52North, DescribeSensensor, Sensor Observation Service, Sensor Web, SOS, Spatial Filtering, Spatial Filtering Profile, Temporal Filtering, validTime

We are pleased to announce that the 52 ° North SOS 4.0.0 implementation supports two new features: the SOS 2.0 Spatial Filtering Profile and the support for the optional validTime parameter in DescribeSensor requests. Both features will facilitate the modelling, storage and retrieval of mobile sensor data from SOS.

Spatial Filtering Profile

The Spatial Filtering Profile is specified in clause 12 of the SOS 2.0 specification (OGC 12-006). This profile restricts observations to spatial observations which provide a well-defined parameter for the observation location. This parameter carries the sampling geometry of the observation which represents the spatial extent where the observation result applies to and can be targeted by spatial filters. The “Spatial Observation” is defined in the Observation & Measurement 2.0 specification (OGC 10-025) subclause 7.13 and can contain any gml:AbstractGeometry type, such as points, lines or polygons.

more >

OpenSensorSearch – Midterm blog

August 2, 2013 by MohammadYakoub Leave a Comment

Filed Under: GSoC, Sensor Web Tagged With: 52°North, 52n, Apache Solr, Cosm, ElasticSearch, ES, GitHub, Open Search, Pachube, Sensor Instance Registry, Sensor Web, SIR, Solr, Xively

Introduction

The aim of the OpenSensorSearch project is to provide a fast implementation of a sensor discovery server with the high performance of a Solr back-end. In addition, we are working on harvesting mechanisms for OpenSensorSearch to allow users to write harvesters for their own sensor data sources.
During this first term, I have had frequent contact with my mentors, twice a week on Monday and Friday. We stick to a Scrum-like methodology and rely heavily on test-driven development. The main considerations and tasks during the first half of the project runtime were:

Testing and extending the existing 52°North Sensor Instance Registry (SIR) implementation: Since the project builds upon the SIR implementation, it must be carefully tested and extended for the OpenSensorSearch implementation.
Providing fast indexing and retrieving: The metadata indexing shall use the data fields supported by Apache Solr for fast indexing and retrieving.
Developing easy and open harvesting mechanisms: The harvesting mechanisms must be both easy and open to make it accessible to wide span of developersmore >