WASS/EGNOS

[Ipaq]

Hello all,

Can anyone tell me if the above are live yet as I have read reports giving a live date of April 2004 (now). Also can I use them with TTN2, globalsat cf307 & Ipaq h2210?

Thanks in advance.

[lbendlin]

We heard rumours that EGNOS is now live but haven't seen confirmation yet.

EGNOS has nothing to do with Navigation programs or PocketPCs. All the magic is happening within the GPS receiiver which needs to support that mode. (yes, the 307 does)
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Lutz

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[DavidW]

EGNOS is going through various readiness reviews before full service at the moment - this is the latest I could find in the ESA web site.

The EGNOS web site is as chaotic as ever - though the best information still seems to be here. PRN 131 (IOR) you can forget about in much of western Europe - it's far too low to the horizon to be of any use.


I'm just trying some experiments now to see what I can pick up in the UK. It doesn't look like PRN 120 (AOR-E) is transmitting, though I'm a little surprised at that result (elsewhere, the EGNOS web site implies that PRN 120 is transmitting), and it may be that my test antenna isn't in the best position. Of the three EGNOS satellites, I'm pretty sure that that one will be the easiest to receive in the UK. PRN 124 (Artemis) should be reasonable in the UK. I can't remember where PRN 126 (IOR-W) is in the sky - I think it's further west than the other two, which will mean it's the least useful of the three satellites that are planned to be in the production EGNOS service for the westernmost parts of Europe, such as the UK.


WAAS, if you're in the United States, is at a more advanced state - I'm pretty sure that's now in production service, and probably, by now, is flagged as OK for Safety Of Life (aviation) use. I can pick up PRN 122, which is one of the WAAS satellites, in the UK at the moment - though it doesn't offer much in the way of useful information for users this far east.

A plea - please set your location so that we know at least which country you're in.



However, the important thing with all the SBAS systems (of which WAAS and EGNOS are the two that are the most advanced - there are others planned, for example, for Japan) is that they really offer no benefit for vehicle navigation. In the areas of vehicle navigation where you'd possibly benefit the most from a more accurate position, that is in cities, they're the hardest to pick up, needing line of sight at a low elevation to the south to pick up geostatationary satellites over the equator. SISNeT is one way around this, offering the possibility of getting EGNOS corrections over GPRS - but there's really no point for vehicle navigation.



David

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