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html
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<!DOCTYPE html>
<meta charset="utf-8">
<style>
text {
font: 12px sans-serif;
}
th, td {
padding-left: 8px;
padding-right: 8px;
padding-top: 1px;
padding-bottom: 1px;
font-family: monospace;
}
tr:nth-child(even) {background: #CCC}
tr:nth-child(odd) {background: #FFF}
a ton of changes
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prevent hz duplication on changing preference in html
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label {
cursor: pointer;
}
input[type="checkbox"] {
cursor: pointer;
}
a ton of changes
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.CellWithComment{
position:relative;
}
.CellComment{
display:none;
position:absolute;
z-index:100;
border:1px;
background-color:white;
border-style:solid;
border-width:1px;
border-color:red;
padding:3px;
color:red;
top:20px;
left:20px;
}
.CellWithComment:hover span.CellComment{
display:block;
}
html
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</style>
<body>
partial commit of changes that should not break things in master
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Last update: <span id="freshness"></span>. More information about this Galileo/GPS/BeiDou/Glonass open source monitor can be found <a href="https://github.com/ahupowerdns/galmon/blob/master/README.md#galmon">here</a>. Live map <a href="geo">here!</a>. Contact <a href="https://ds9a.nl/">me</a> if you want access to the Grafana dashboard.<br/>
add checkboxes so you can select what you want to see
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<center>
<hr/>
prevent hz duplication on changing preference in html
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<input type="checkbox" id="GalE1" onclick="updateSats();"> <label for="GalE1">Galileo E1</label> &nbsp;&nbsp;
<input type="checkbox" id="GalE5b" onclick="updateSats();"> <label for="GalE5b">Galileo E5b</label> &nbsp;&nbsp;
<input type="checkbox" id="BeiDouB1I" onclick="updateSats();"> <label for="BeiDouB1I">BeiDou B1I</label> &nbsp;&nbsp;
<input type="checkbox" id="BeiDouB2I" onclick="updateSats();"> <label for="BeiDouB2I">BeiDou B2I</label> &nbsp;&nbsp;
<input type="checkbox" id="GlonassL1" onclick="updateSats();"> <label for="GlonassL1">Glonass L1</label> &nbsp;&nbsp;
<input type="checkbox" id="GlonassL2" onclick="updateSats();"> <label for="GlonassL2">Glonass L2</label> &nbsp;&nbsp;
<input type="checkbox" id="GPSL1CA" onclick="updateSats();"> <label for="GPSL1CA">GPS L1C/A</label> &nbsp;&nbsp;
add checkboxes so you can select what you want to see
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<input type="checkbox" id="GPSL2C" onclick="updateSats();"> <label for="GPSL2C">GPS L2C</label>
</center>
<hr/>
html
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<table id="svs"></table>
<hr>
html updates
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<p>
<span id="facts"></span>
</p>
html
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Stale:<br/>
<table id="svsstale"></table>
<p>
add checkboxes so you can select what you want to see
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This table shows live output from four Galileo/GPS/BeiDou/GLONASS receivers hosted in Nootdorp, The Netherlands and California, United States, Tonga, Brazil, Singapore, Austria ans Uruguay.
html
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It is very much a work in progress, and will not be available at all times. Extremely rough code is on
<a href="https://github.com/ahuPowerDNS/galmon">GitHub</a>.
Some technical detail behind this setup can be found in <a href="https://ds9a.nl/articles/posts/galileo-notes/">this post</a>.
too much to mention
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For updates, follow <a href="https://twitter.com/GalileoSats">@GalileoSats</a> on Twitter, or join us on our IRC channel (chat) via the
<a href="https://webchat.oftc.net/?channels=galileo">web gateway</a>.
html
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The meaning of the fields is as follows:
<table>
<tr valign="top"><td>sv</td><td>Satellite Vehicle, an identifier for a Galileo satellite. Not the actual name of the satellite, other satellites could take over this number in case of failures</td></tr>
<tr valign="top"><td>iod</td><td>Issue of Data. Satellites periodically get sent updates on their orbit &amp; other details, each update has a new IOD number. It is coincidence that all SVs currently receive the same IOD numbers, this is by no means guaranteed. Currently however, if an SV has a lower IOD, it has not received new updates recently.</td></tr>
<tr valign="top"><td>eph‑age‑m</td><td>Age of ephemeris in minutes. Denotes how old the current set of orbit data is. Could be very old if SV is out of sight (see below). An acceptable limit is 4 hours (240 minutes).</td></tr>
too much to mention
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<tr valign="top"><td>latest-disco</td><td>"jump" of the orbit prediction at the latest ephemeris change. Centimeters are good.</td></tr>
html
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<tr valign="top"><td>sisa</td><td>Signal In Space Accuracy, how well the position of an SV is known.</td></tr>
<tr valign="top"><td>e1bhs, e1bdvs, e5bhs, e5bdvs</td><td>Health flags for E1 (common) and E5 (uncommon) frequencies.</td></tr>
<tr valign="top"><td>a0, a1</td><td>Offset of the Galileo Standard Time to UTC. a0 is (more or less) the offset in nanoseconds, a1 is a measure of the rate of change</td></tr>
<tr valign="top"><td>elev</td><td>Elevation of an SV over my horizon (90 is straight up), reported by receiver</td></tr>
<tr valign="top"><td>calc-elev</td><td>Elevation of an SV over or under my horizon (90 is straight up), calculated by this website</td></tr>
<tr valign="top"><td>db</td><td>A measure of signal to noise ratio (in unknown units, 40 is good)</td></tr>
<tr valign="top"><td>last‑seen‑s</td><td>Number of seconds since we've last received from this SV. A satellite can be out of sight for a long time</td></tr>
</table>
</p>
<p>
The official Galileo constellation status can be found on the <a href="https://www.gsc-europa.eu/system-status/Constellation-Information">European GNSS Service Centre page</a>, which also lists "NAGUs", <a href="https://www.gsc-europa.eu/system-status/user-notifications">notifications about outages or changes</a>.
</p>
add TLEs
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<p>
Official GLONASS status can be found on <a href="https://www.glonass-iac.ru/en/GLONASS/">this page</a> from the Russian Information and Analysis Center for Positioning, Navigation and Timing.
</p>
<p>
Sadly reduced status updates on GPS can be found on <a href="https://www.navcen.uscg.gov/?Do=constellationStatus">this page</a> from the US Department of Homeland Security.
</p>
<p>
Information on the status of BeiDou can be found on <a href="http://www.csno-tarc.cn/system/constellation&ce=english">this page</a> from the Chinese Test and Assessment Research Center of China Satellite Navigation Office.
</p>
html
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<p>
Feedback is very welcome on bert@hubertnet.nl or <a href="https://twitter.com/PowerDNS_Bert">@PowerDNS_Bert</a>.
add TLEs
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</p>
html
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<script src="d3.v4.min.js"></script>
<script src="ext/moment-with-locales.js"></script>
<script src="doalles.js"></script>
</body>
</html>
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