Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > Electronics > Navigation System
Fluid Motor Union
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #21  
Old 02-22-2010, 11:50 AM
Member
 
Join Date: Jun 2006
Location: UK
Posts: 698
big bob is on a distinguished road
I've never gotten lost while reversing into a parking space.
Reply With Quote

Sponsored Links

  #22  
Old 02-22-2010, 02:08 PM
Member
 
Join Date: Jan 2010
Location: London, UK
Posts: 161
neiloakley is on a distinguished road
Quote:
Originally Posted by big bob View Post
I've never gotten lost while reversing into a parking space.
But if you dont wire the reverse signal in, the map would flip round each time you reversed, then rolled forward, then reversed (like reverse/paralell parking)

Its one wire, right next to nav unit - i dont understand why there is such a big discussion. But then i've always been one to do a job properly!
Reply With Quote
  #23  
Old 05-17-2014, 06:00 AM
Member
 
Join Date: May 2014
Location: Auckland, New Zealand
Posts: 7
Chalky is on a distinguished road
Quote:
Originally Posted by KiwiJochen View Post
The speed pulse is needed for dead reckoning

Dead reckoning is used...

for the first seconds to minutes after switch on before a GPS signal is acquired (you can easily drive 1km in this time)
under bridges
in tunnels
in underground carparks
in built up cities with many skyscrapers and poor satellite reception
in very bad weather with weak GPS signal
and many other situations where GPS signal is interrupted.

Use at the VERY LEAST the speed pulse!

The reverse signal is only for when you go backwards.... but that is so easy to connect, there is no excuse for not using it.

No Dead Reckoning = Disappointing GPS performance

With Dead Reckoning = Perfect GPS Performance

You choose.
Jochen is right, initial time to find a satellite fix can be considerable, and with speedo/wheel signal your nav computer will be useless for that period, instructions will be rubbish. I experienced this last week in my own car (E38 nav retrofit), it was embarrassing. Then, I connected up the speedo signal (TAA), and I was very impressed. I suddenly had navigation directions immediately available upon entering the car, prior to getting proper GPS fix! The nav computer's tracking based on speed signal, compass, & gyros is quite amazing. It really was like another upgrade to my nav. Love it.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 01:49 AM.
vBulletin, Copyright 2024, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.