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(IVAR) - Final Report - Strategic Environmental Research and ...

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Conclusion<br />

We have successfully demonstrated the ability to maintain a high degree (100%) of data integrity<br />

in streaming one hour of plots & tracks data from a DRP at SEA to an RDS located at ARTI<br />

more than 3300 km away.<br />

6.3.1.2 Wired LAN Availbility [PC3.1]<br />

Objective<br />

We designed Performance Criterion PC3.1, Wired LAN Availability, to assess the uptime of a<br />

wired network over 24 hours of continuous operation. Network availability is an important<br />

factor in providing target information to remote users who need it <strong>and</strong>, because of its<br />

significance, we expect to see high availability in this demonstration.<br />

Performance Criterion PC3.1 calls for a test setup in which a radar installation, a DRP, <strong>and</strong> an<br />

RDS are located at a single site: ARTI. The components are to be interconnected by a wired<br />

LAN, <strong>and</strong> target information is to be processed by the DRP over a continuous, 24-hour period.<br />

This target information will be stored locally on the DRP <strong>and</strong> streamed to the RDS, thereby<br />

producing two separate datasets of the same plots <strong>and</strong> tracks data. A scan-wise comparison of<br />

the two datasets will be performed in order to identify any missing scans, ensuring that the<br />

(calculated) availability of the wired LAN is above 90%.<br />

Methods<br />

The prescribed test setup was established using an existing radar installation at ARTI. We<br />

connected a DRP to the radar, which was then connected to an RDS over a wired LAN. Target<br />

information was stored locally on the DRP <strong>and</strong> streamed to the RDS during a continuous, 24-<br />

hour period.<br />

At the conclusion of the 24-hour period, we acquired the plots <strong>and</strong> tracks files from the DRP <strong>and</strong><br />

extracted the corresponding dataset from the RDS. The datasets were loaded into the TDV<br />

application <strong>and</strong> exported to separate, delimited text files to facilitate analysis <strong>and</strong> comparison in<br />

Microsoft Excel®.<br />

We created a Microsoft Excel® workbook that consisted of three worksheets: one entitled<br />

“From_RDS” which contained the dataset extracted from the RDS; a second entitled<br />

“From_DRP”, which contained the dataset from the plots <strong>and</strong> tracks files on the DRP; <strong>and</strong> a third<br />

entitled “Comparison”, which was used to perform the comparison between the DRP <strong>and</strong> RDS<br />

datasets.<br />

This workbook layout can be seen in Figure 6-85:<br />

201

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