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id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " 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class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=SensorML" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=SensorML" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=SensorML" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=SensorML" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-What_is_it?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#What_is_it?"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>What is it?</span> </div> </a> <ul id="toc-What_is_it?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-What_is_it_good_for?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#What_is_it_good_for?"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>What is it good for?</span> </div> </a> <ul id="toc-What_is_it_good_for?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-What_are_the_essential_elements?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#What_are_the_essential_elements?"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>What are the essential elements?</span> </div> </a> <ul id="toc-What_are_the_essential_elements?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-How_did_it_come_about?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#How_did_it_come_about?"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>How did it come about?</span> </div> </a> <ul id="toc-How_did_it_come_about?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">SensorML</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" 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.ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Tone plainlinks metadata ambox ambox-style ambox-Tone" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/40px-Edit-clear.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/60px-Edit-clear.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/80px-Edit-clear.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article's <b>tone or style may not reflect the <a href="/wiki/Wikipedia:Writing_better_articles#Tone" title="Wikipedia:Writing better articles">encyclopedic tone</a> used on Wikipedia</b>.<span class="hide-when-compact"> See Wikipedia's <a href="/wiki/Wikipedia:Writing_better_articles#Tone" title="Wikipedia:Writing better articles">guide to writing better articles</a> for suggestions.</span> <span class="date-container"><i>(<span class="date">December 2022</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p><b>SensorML</b> is an approved <a href="/wiki/Open_Geospatial_Consortium" title="Open Geospatial Consortium">Open Geospatial Consortium</a> standard and an <a href="/wiki/XML" title="XML">XML</a> encoding for describing sensors and measurement processes. SensorML can be used to describe a wide range of sensors, including both dynamic and stationary platforms and both in-situ and remote sensors. </p><p>Functions supported include. </p> <ul><li>sensor discovery</li> <li>sensor <a href="/wiki/Geolocation" class="mw-redirect" title="Geolocation">geolocation</a></li> <li>processing of sensor observations</li> <li>a sensor programming mechanism</li> <li>subscription to sensor alerts</li></ul> <p>Examples of supported sensors are </p> <ul><li><i>stationary, in-situ</i> – chemical “sniffer”, thermometer, gravity meter</li> <li><i>stationary, remote</i> – stream velocity profiler, atmospheric profiler, <a href="/wiki/Doppler_radar" title="Doppler radar">Doppler radar</a></li> <li><i>dynamic, in-situ</i> – aircraft mounted ozone “sniffer”, GPS unit, dropsonde</li> <li><i>dynamic, remote</i> – satellite radiometer, airborne camera, soldier-mounted video</li></ul> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="What_is_it?"><span id="What_is_it.3F"></span>What is it?</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SensorML&action=edit&section=1" title="Edit section: What is it?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>SensorML provides standard models and an XML encoding for describing any process, including the process of measurement by sensors and instructions for deriving higher-level information from observations. It provides a provider-centric view of information in a sensor web, which is complemented by <a href="/wiki/Observations_and_Measurements" title="Observations and Measurements">Observations and Measurements</a> which provides a user-centric view. </p><p>Processes described in SensorML are discoverable and executable. All processes define their inputs, outputs, parameters, and method, as well as provide relevant metadata. SensorML models detectors and sensors as processes that convert real phenomena to data. </p><p>SensorML doesn't encode measurements taken by sensors; measurements can be represented in <a href="/wiki/TransducerML" title="TransducerML">Transducer ML</a>, as observations in <a href="/wiki/Observations_and_Measurements" title="Observations and Measurements">Observations and Measurements</a>, or in other forms, such as <a href="/wiki/IEEE_1451" title="IEEE 1451">IEEE 1451</a>. </p> <div class="mw-heading mw-heading2"><h2 id="What_is_it_good_for?"><span id="What_is_it_good_for.3F"></span>What is it good for?</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SensorML&action=edit&section=2" title="Edit section: What is it good for?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><i><b>Electronic Specification Sheet</b></i> - </p><p>In its simplest application, SensorML can be used to provide a standard digital means of providing specification sheets for sensor components and systems. </p><p><i><b>Discovery of sensor, sensor systems, and processes</b></i> - </p><p>SensorML is a means by which sensor systems or processes can make themselves known and discoverable. SensorML provides a rich collection of metadata that can be mined and used for discovery of sensor systems and observation processes. This metadata includes identifiers, classifiers, constraints (time, legal, and security), capabilities, characteristics, contacts, and references, in addition to inputs, outputs, parameters, and system location. </p><p><i><b>Lineage of Observations</b></i> - </p><p>SensorML can provide a complete and unambiguous description of the lineage of an observation. In other words, it can describe in detail the process by which an observation came to be from acquisition by one or more detectors to processing and perhaps even interpretation by an analyst. Not only can this provide a confidence level with regard to an observation, in most cases, part or all of the process could be repeated, perhaps with some modifications to the process or by simulating the observation with a known signature source. </p><p><i><b>On-demand processing of Observations</b></i> - </p><p>Process chains for geolocation or higher-level processing of observations can be described in SensorML, discovered and distributed over the web, and executed on-demand without a prior knowledge of the sensor or processor characteristics. This was the original driver for SensorML, as a means of countering the proliferation of disparate, stovepipe systems for processing sensor data within various sensor communities. SensorML also enables the distribution of processing to any point within the sensor chain, from sensor to data center to the individual user's PDA. SensorML enables this processing without the need for sensor-specific software. </p><p><i><b>Support for tasking, observation, and alert services</b></i> - </p><p>SensorML descriptions of sensor systems or simulations can be mined in support of establishing OGC <a href="/wiki/Sensor_Observation_Service" title="Sensor Observation Service">Sensor Observation Services</a> (SOS), <a href="/w/index.php?title=Sensor_Planning_Service&action=edit&redlink=1" class="new" title="Sensor Planning Service (page does not exist)">Sensor Planning Services</a> (SPS), and <a href="/w/index.php?title=Sensor_Alert_Service&action=edit&redlink=1" class="new" title="Sensor Alert Service (page does not exist)">Sensor Alert Services</a> (SAS). SensorML defines and builds on common data definitions that are used throughout the OGC <a href="/w/index.php?title=Sensor_Web_Enablement_Initiative&action=edit&redlink=1" class="new" title="Sensor Web Enablement Initiative (page does not exist)">Sensor Web Enablement</a> (SWE) framework. </p><p><i><b>Plug-N-Play, auto-configuring, and autonomous sensor networks</b></i> - </p><p>SensorML enables the development of plug-n-play sensors, simulations, and processes, which may be seamlessly added to Decision Support systems. The self-describing characteristic of SensorML-enabled sensors and processes also supports the development of auto-configuring sensor networks, as well as the development of autonomous sensor networks in which sensors can publish alerts and tasks to which other sensors can subscribe and react. </p><p><i><b>Archiving of Sensor Parameters</b></i> - </p><p>Finally, SensorML provides a mechanism for archiving fundamental parameters and assumptions regarding sensors and processes, so that observations from these systems can still be reprocessed and improved long after the origin mission has ended. This is proving to be critical for long-range applications such as global change monitoring and modeling. </p> <div class="mw-heading mw-heading2"><h2 id="What_are_the_essential_elements?"><span id="What_are_the_essential_elements.3F"></span>What are the essential elements?</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SensorML&action=edit&section=3" title="Edit section: What are the essential elements?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><i><b>Component</b></i> - </p><p>Physical atomic process that transforms information from one form to another. For example, a Detector typically transforms a physical property or phenomenon to a digital number. Example Components include detectors, actuators, and physical filters. </p><p><i><b>System</b></i> - </p><p>Composite physically based model of a group or array of components, which can include detectors, actuators, or sub-systems. A System relates a Process Chain to the real world and therefore provides additional definitions regarding relative positions of its components and communication interfaces. </p><p><i><b>Process Model</b></i> - </p><p>Atomic non-physical processing block usually used within a more complex Process Chain. It is associated to a Process Method which defines the process interface as well as how to execute the model. It also precisely defines its own inputs, outputs and parameters. </p><p><i><b>Process Chain</b></i> - </p><p>Composite non-physical processing block consisting of interconnected sub-processes, which can in turn be Process Models or Process Chains. A process chain also includes possible data sources as well as connections that explicitly link input and output signals of sub-processes together. It also precisely defines its own inputs, outputs and parameters. </p><p><i><b>Process Method</b></i> - </p><p>Definition of the behavior and interface of a Process Model. It can be stored in a library so that it can be reused by different Process Model instances (by using 'xlink' mechanism). It essentially describes the process interface and algorithm, and can point the user to existing implementations. </p><p><i><b>Detector</b></i> - </p><p>Atomic component of a composite Measurement System defining sampling and response characteristic of a simple detection device. A detector has only one input and one output, both being scalar quantities. More complex Sensors such as a frame camera which are composed of multiple detectors can be described as a detector group or array using a System or Sensor. In SensorML a detector is a particular type of Process Model. </p><p><i><b>Sensor</b></i> - </p><p>Specific type of System representing a complete Sensor. This could be for example a complete airborne scanner which includes several Detectors (one for each band). </p> <div class="mw-heading mw-heading2"><h2 id="How_did_it_come_about?"><span id="How_did_it_come_about.3F"></span>How did it come about?</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SensorML&action=edit&section=4" title="Edit section: How did it come about?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1998, under the auspices of the international Committee for Earth Observing Satellites (CEOS), Dr. Mike Botts began development of an XML-based Sensor Model Language for describing the geometric, dynamic, and radiometric properties of dynamic remote sensors. Initial development was funded under a NASA AIST Program, and in 2000, SensorML was brought under the oversight of the Open Geospatial Consortium (OGC) where it served as a catalyst for the OGC Sensor Web Enablement (SWE) initiative. SensorML design has benefited greatly from the interactions of members of the OGC Sensor Web Enablement Working Group. The continued development of SensorML has been supported by the Interoperability Program of OGC, as well as the US Environmental Protection Agency (EPA), the US National GeoSpatial-Intelligence Agency (NGA), the US Joint Interoperability Test Command (JITC), the US Defense Information Systems Agency (DISA), SAIC, General Dynamics, Northrop Grumman, Oak Ridge National Labs, and NASA. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SensorML&action=edit&section=5" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Observations_and_Measurements" title="Observations and Measurements">Observations and Measurements</a></li> <li><a href="/wiki/Semantic_Sensor_Web" title="Semantic Sensor Web">Semantic Sensor Web</a></li> <li><a href="/wiki/IEEE_1451" title="IEEE 1451">IEEE 1451</a></li> <li><a href="/wiki/Transducer_electronic_data_sheet" class="mw-redirect" title="Transducer electronic data sheet">Transducer electronic data sheet</a></li> <li><a href="/wiki/Sensor_Grid" class="mw-redirect" title="Sensor Grid">Sensor Grid</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SensorML&action=edit&section=6" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.opengeospatial.org/standards/sensorml">SensorML page at OGC</a></li> <li><a rel="nofollow" class="external text" href="http://www.opengeospatial.org/">Open Geospatial Consortium homepage</a></li> <li><a rel="nofollow" class="external text" href="http://www.sensorml.com/sensorML-2.0/examples/">OGC</a> <a rel="nofollow" class="external text" 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