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In addition to the national ground infrastructure network, Geoscience Australia will deliver a satellite positioning capability. This will improve the accuracy (ten centimetres), integrity and availability of positioning data across Australia and its maritime jurisdiction. The Satellite Based Augmentation System is an international standard used to deliver precise and high-integrity positioning, navigation and timing data via satellite. This will support regional Australia and sectors such as the aviation and maritime sectors. |
Originally Posted by Capn Bloggs
(Post 10142825)
There you go, Leddie, you'll be able to spend more time on Prune and less time on your dwindling super because you won't have to fork out $$ for your local DGPS base station when you're mowing your block with the remote control tractor! :ok:
I commend to you reading the paper mentioned by Ozbusdriver, and particular Table 2, which gives you the expected accuracies achievable with various augmentation system. I would also point out that there is nothing in said paper that is technically inconsistent with any of the remarks I have posted on the subject. I have always found that smartaleck remarks are a poor substitute for facts and a considered opinion based on knowledge and experience. Tootle pip!! PS: My SMSF is doing rather well thanks, I think it will outlast me. |
Originally Posted by alphacentauri
(Post 10143085)
OZ, I am noting......its GA that have advised the existing ground infrastructure is not adequate.
Im involved in the project. The cost includes setup of ground stations inc building new ones. Perhaps, then, you could explain why one of the ground stations is going to be on Cocos Island?? Tootle pip!! |
I am in Vietnam at present. 93 million productive people. huge infrastructure developments. huge economic transformation. .....and yet little Australia is still carping over introduction of an international standard SBAS?? The conceit in not adopting international standards as they appear is just mind boggling. BTW, the reason for a Cocos Is. ground station is probably to improve accuracy for the marine oil and gas industry in WA. |
The further apart the ground stations are the better geomtery you have to provide a correction. Also the larger area you can apply that correction to.
Last time I looked, Cocos Island was part of Australian NW territories. Surely a national nav infastructure project woukd include our outer territories. Not to mention Sunfish's points |
Originally Posted by Ledssled
I have always found that smartaleck remarks are a poor substitute for facts and a considered opinion based on knowledge and experience.
Originally Posted by Leddie
Perhaps, then, you could explain why one of the ground stations is going to be on Cocos Island??
It's not $225m for the SBAS, it's $160m. The extra is for the 3cm accuracy.
Originally Posted by 27/09
No doubt some will ague BaroVNAV does the same thing. Yes it does, provided the correct Baro setting is set. There's plenty of opportunity for the wrong Baro setting to be set and it happens. SBAS avoids these errors.
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Originally Posted by Capn Bloggs
(Post 10143822)
Me too, Leddy! :ok:
In the document that you told me to read, perhaps you could do a search for "maritime jurisdiction". That might give a clue as to why. It's not $225m for the SBAS, it's $160m. The extra is for the 3cm accuracy. Nobody's answered me yet; how is the LPV DA displayed/used/worked out in the cockpit? Using a rad alt? An SBAS capable GPS with a vaild SBAS signal and a LPV approach loaded will allow the vertical deviation indicator to be displayed on an EFIS, or respond on a steam gauge just as it would with a valid glideslope on an ILS. DA is read off the altimeter just like the ILS. Simples. You could use a Rad Alt too if you were so equipped. In my experience an Rad Alt is a very poor way to determine DA or MDA for that matter. |
Thanks 27/09.
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Originally Posted by Horatio Leafblower
(Post 10142964)
Bendalot
Type endorsements have been abolished for a great many aircraft types but we still tend to do the same 3-4 hours of training per type and we still refer to it as an "endorsement", because everybody understands immediately what you mean and what it encompasses. ....but they have been replaceed by some other category of visa that does substantially the same thing and when we refer to "457 Visas" everybody understands what it means and what it allows someone to do. In Fact even Register Migration Agents are not familiar fully with the new visas - they are the only people qualified to give advice about migration in Australia. So if they don't know how to you know? In fact very few of the new visas have even been applied for. They are so new the 457's are still in processing stage due to process time and most of the new visa category follow the same processing requirements and time frames. It fine to bag out some thing if it if fact - but your statement is not correct. |
Originally Posted by Sunfish
(Post 10143639)
.....and yet little Australia is still carping over introduction of an international standard SBAS?? The conceit in not adopting international standards as they appear is just mind boggling. Which goes a long way to explain why it has been estimated that Australia will slip from economy No.6 in our region, to No.13 by 2030. Our ratbag energy "policy", helping to de-industrialize Australia, alone will be a big contributor. A big pilot training operation has recently been established there, another one in Cambodia, perhaps we can fill the Australian pilot shortfall from the CASA destruction of local training, from those sources. Tootle pip!! PS: It is New Zealanders who are very active in setting up schools in the area, with local aviation authorities increasingly adopting the NZ "rules" as a basis for their own ICAO compliant rules. |
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