SailNet Community - View Single Post - Sat-nav devices face big errors as solar activity rises
View Single Post
post #9 of Old 10-12-2012
hellosailor
Reward for lost Kraken!
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,556
Thanks: 6
Thanked 137 Times in 134 Posts
Rep Power: 11
   
Re: Sat-nav devices face big errors as solar activity rises

"And the powers of the administration have shut down Loran in order to save a few pennies. "
Well, no, actually, LORAN-C is no answer to the problem. I've had LORAN-C tell me the next mark was a thousand miles away located somewhere in Kansas, while racing in LI Sound (NY). LORAN-C suffered from a host of inherent problems and distortions and while it is a good idea to have some second source to poll against any one position, LORAN-C wasn't perfect.

BBC has also written that they expect the distortion from solar flares to cause a GPS inaccuracy of tens of meters, so we're looking at perhaps a 20-50 meter degradation during heavy flares, and if you are using WAAS or another correction system, that should be resolving the error from the flares as well.

If you aren't picking your head up and confirming your position well before you get within fifty meters of anything hard, sharp, or solid? SALVAGE!
hellosailor is offline  
Quote Share with Facebook
 
 
For the best viewing experience please update your browser to Google Chrome