Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 21-02-2014, 08:01   #1
Registered User
 
Cormorant's Avatar

Join Date: Jan 2009
Location: Catskill Mountains when not cruising
Boat: 31' homebuilt Michalak-designed Cormorant "Sea Fever"
Posts: 2,073
GPS Satellite Launch

They put up a new GPS satellite yesterday.

Next-generation GPS satellite launched into orbit

Mostly I'm posting this just because I love the photo that accompanied the news article.

I've always wanted to be out on the water near Canaveral when they do a nighttime launch . . . someday, I hope.
Attached Thumbnails
Click image for larger version

Name:	GPS_LAUNCH.JPG
Views:	189
Size:	11.3 KB
ID:	76513  
__________________

__________________
Cormorant is offline   Reply With Quote
Old 21-02-2014, 12:16   #2
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Re: GPS Satellite Launch

These are Block IIF birds, designed as a holding position until the newer birds are available as the GPS constellation was getting close to having no redundancy

They have a few new characteristics ( wiki summary)

Broadcasting L5 "safety of life" navigation signal demonstrated on USA-203
Broadcasting a new M-code signal
Doubling in the predicted accuracy
Better resistance to jamming
Reprogrammable processors that can receive software uploads
The first GPS satellites not to have Selective Availability hardware installed which degraded civilian accuracy when turned on in the original satellite fleet

Safety of life , is for aircraft etc, GPS enabled landings...hmmmmmm


I believe all these block IIF are carrying the new civilian L2C channel for enhanced position accuracy, when the constellation is updated, this will provide the same or better then m,military to dual receiver based GPS receivers. mm accuracy.


Interesting re SA hardware, this wasn't expected until GPS III, of course wiki could be wrong.!!

Dave
__________________

__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 21-02-2014, 13:28   #3
Long Range Cruiser
 
MarkJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,828
Images: 25
Re: GPS Satellite Launch

Quote:
Originally Posted by Cormorant View Post

Mostly I'm posting this just because I love the photo that accompanied the news

What crap GPS! It can't even get the satellite to go straight!!!





Mark
__________________
Notes on a Circumnavigation.
OurLifeAtSea.com

Somalia Pirates and our Convoy
MarkJ is offline   Reply With Quote
Old 21-02-2014, 13:57   #4
Senior Cruiser

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Cruising NC, FL, Bahamas, TCI & VIs
Boat: 1964 Pearson Ariel 'Faith' / Pearson 424, sv Emerald Tide
Posts: 1,531
Re: GPS Satellite Launch

A bunch of us watched the launch from the Abacos last night, had a pretty good view.
__________________
s/v 'Faith' is offline   Reply With Quote
Old 21-02-2014, 17:54   #5
Registered User
 
brutb's Avatar

Join Date: Feb 2011
Location: Cocoa, FL
Boat: Wittholz 39' Cutter by Kanter, CSY 37 Cutter
Posts: 598
Images: 4
Re: GPS Satellite Launch

We watched the launch from the bow of our sailboat on Merritt Island. Always a great sight to see so much power unleashed in a short period of time. Jeff, our Wisconsin visitor, had never seen a launch and videoed the whole thing until it was lost in the high thin cloud layer. A night launch is always spectacular to see.... This is one time you can see your American tax dollars at work for lots of people.
__________________
brutb is offline   Reply With Quote
Reply

Tags
gps, satellite

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:22.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.