Abstract. On April 15 and 19, 1998, two intense dust storms were generated over the Gobi desert by springtime low-pressure systems descending from the northwest. The windblown dust was detected and its evolution followed by its yellow color on SeaWiFS satellite images, routine surface-based monitoring, and through serendipitous observations. The April 15 dust cloud was recirculating, and it was removed by a precipitating weather system over east Asia
The OGC Sensor Web Enablement (SWE) standards provide a foundation for the interoperability needed to enable and sustain the sensor web. A critical step in the adoption and success of web standards, in general, is their implementation in a variety of application and user contexts. This paper discusses the sensor web framework PULSENet TM and lessons learned in implementing an OGC SWE-based architecture. The objective of PULSENet TM is to provide a standards-based framework for the discovery, access, use and control of heterogeneous sensors, their metadata, and their observation data. A combination of open-source SWE code, COTS products, and custom development were required to construct the framework that provided an adaptive and flexible environment for integrating sensors without requiring its users to necessarily understand and be exposed to the OGC SWE standards. (e.g., IEEE 1451 and CCSI), and OGC SWE interfaces. PULSENet TM is not intended to be a centralized, stand-alone sensor web system but is designed to serve an intermediary role with other sensor, processing and decision support systems. The sensor data in PULSENet TM can be made available to other "down stream" components in workflows, such as processing services or existing data analysis and exploitation systems.
To date, PULSENet TM has been applied to a wide range of applications spanning the environmental and defense and intelligence domains. An important aspect of these applications is the need to accommodate both legacy and non-SWE standards based sensors in SWE-based architectures. Implementation of OGC SWE by sensor manufacturers has been limited and substantial effort is ongoing in harmonizing OGC SWE with other sensor related standards. This paper offers examples of integrating sensors that provide only vendor-specific interfaces, related standard interfaces
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.