<?xml version="1.0" encoding="UTF-8"?>
<ComputationCapabilities xmlns="https://metadata.pithia.eu/schemas/2.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="https://metadata.pithia.eu/schemas/2.2 https://metadata.pithia.eu/schemas/2.2/pithia.xsd">
<!--
The computation process that produces observed properties from its input data.
Input data may be an acquisition or some other computatation, not listed here yet. TODO: add input specification
Each newly computed observed property that this computation can produce is defined as its *capability*.
The list of capabilities is all-inclusive, even though not every computation can engage all capabilities.
-->
<identifier>
<PITHIA_Identifier>
<localID>ComputationCapabilities_UPC-PreciseNetwork_ShapeFunction-by-LSS</localID>
<namespace>upc</namespace>
<version>1</version>
<creationDate>2023-12-05T08:00:07Z</creationDate>
<lastModificationDate>2023-12-05T08:00:07Z</lastModificationDate>
</PITHIA_Identifier>
</identifier>
<name>UPC-PreciseNetwork: Estimation of the Shape Function</name>
<description>
In order to estimate the unknown shape function, we build the inverse problem jacobian, with every raw
corresponding to each given observation, formed by 1, as coefficient of the unknown ionospheric carrier
phase ambiguity, and the lengths correspondingly multiplied by VTEC, for each part of line of sight inside
each illuminated layer. Finally, we compute the shape function profile(s) at every layer, and Bi by Least
Squares.
</description>
<capabilities>
<processCapability>
<name>Shape Function valid over a 2D region</name>
<observedProperty xlink:href="https://metadata.pithia.eu/ontology/2.2/observedProperty/DensityOverVTEC"/>
<dimensionalityInstance xlink:href="https://metadata.pithia.eu/ontology/2.2/dimensionalityInstance/1D"/>
<dimensionalityTimeline xlink:href="https://metadata.pithia.eu/ontology/2.2/dimensionalityTimeline/2DImageProfilogram"/>
<units xlink:href="https://metadata.pithia.eu/ontology/2.2/unit/m-1"/>
</processCapability>
</capabilities>
<dataLevel xlink:href="https://metadata.pithia.eu/ontology/2.2/dataLevel/L2A"/>
<qualityAssessment>
<dataQualityFlag xlink:href="https://metadata.pithia.eu/ontology/2.2/dataQualityFlag/DQ1"/>
</qualityAssessment>
<type xlink:href="https://metadata.pithia.eu/ontology/2.2/computationType/Fitting"/>
<version/>
<softwareReference/>
<processingInput/>
<algorithm/>
</ComputationCapabilities>
