Internet links are tough to find offshore, and I think data from them would be difficult to integrate since it is in display format already. Data coming from the receiver is delivered in some kind of sentence format already. It just has to be interpreted and combined with the gpsd sentences. Multiplexers are commonly sold to the sailors just for this task. One of many:<div>
<br></div><div><a href="http://www.marinetalk.com/articles-marine-companies/art/New-Multiplexer-for-Nautical-Instruments-THE18494616TU.html">www.marinetalk.com/articles-marine-companies/art/New-Multiplexer-for-Nautical-Instruments-THE18494616TU.html</a><div>
<br><div class="gmail_quote">On Wed, Jan 14, 2009 at 12:42 PM, Guenther Meyer <span dir="ltr"><<a href="mailto:d.s.e@sordidmusic.com">d.s.e@sordidmusic.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Am Mittwoch 14 Januar 2009 schrieb Doug Robinson:<br>
> AIS traffic comes from a radio receiver via a serial link most generally.<br>
> Could be integrated using a Bluetooth stream as well. As I understand it<br>
> class A traffic (the big ships), transmit position twice a minute and<br>
> generally are moving @ 5 to 25 knots. Class B traffic (us little guys),<br>
> are transmitting once a minute and could be at 6 knots for the rag driven<br>
> and 35+ knots for the stink pots. Guess I would recast the incoming<br>
> traffic from AIS into the existing GPSDrive format as data off the friends<br>
> server and have a look.<br>
<br>
I guess, the data is coming from a local receiver connected to the computer,<br>
and not from an internet connection.<br>
so it would be very easy to include this, if the application, that reads the<br>
data can write directly to the gpsdrive database as POI data, or gpsdrive<br>
connects in some way to this application.<br>
<br>
I would suggest a poi type 'nautical.ais' for that, having additional<br>
subtypes, if the data is specified more exactly, like:<br>
nautical.ais.port<br>
nautical.ais.passenger_vessel<br>
nautical.ais.cargo_vessel<br>
nautical.ais.tanker<br>
...<br>
Yes:</blockquote><div> <span class="Apple-style-span" style="color: rgb(51, 51, 102); font-family: 'Trebuchet MS'; font-size: 12px; "><img align="top" src="http://marinetraffic.com/ais/icons/marker_orange.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; "> Ports <input id="CheckStations" name="CheckStations" type="checkbox" onclick="changeStations();" style="font-size: 9pt; "><img align="top" src="http://marinetraffic.com/ais/icons/marker_green.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; "> Stations</span></div>
<span class="Apple-style-span" style="color: rgb(51, 51, 102); font-family: 'Trebuchet MS'; font-size: 12px; "><input id="CheckType6" name="CheckType6" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/blue1_90.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">Passenger Vessels<br>
<input id="CheckType7" name="CheckType7" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/lightgreen1_90.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">Cargo Vessels<br>
<input id="CheckType8" name="CheckType8" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/red1_90.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">Tankers<br>
<input id="CheckType4" name="CheckType4" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/yellow1_90.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">High Speed Craft<br>
<input id="CheckType3" name="CheckType3" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/cyan1_90.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">Tug, Pilot, etc<br>
<input id="CheckType9" name="CheckType9" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/magenta1_90.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">Yachts & Others<br>
<input id="CheckType1" name="CheckType1" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/pink0.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">Navigation Aids<br>
<input id="CheckType0" name="CheckType0" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/lightgray1_90.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">Unspecified Ships<br>
<input id="CheckMoving" name="CheckMoving" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/white1_90.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">Ships Underway<br>
<input id="CheckStopped" name="CheckStopped" checked type="checkbox" onclick="refreshPositions();" style="font-size: 9pt; "> <img align="top" src="http://marinetraffic.com/ais/shipicons/white0.png" style="border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; ">Anchored/Moored</span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
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<br></blockquote></div><br><br clear="all"><br>-- <br>Doug Robinson<br>office: <a href="mailto:fdr@mytemyke.com">fdr@mytemyke.com</a> <br>direct: <a href="mailto:fdr@mytemyke.net">fdr@mytemyke.net</a> (gmail)<br>
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