Question for TL's with Nav
Thread Starter
Sippy Cup (x2)
Joined: Jun 2005
Posts: 1,961
Likes: 9
From: Virginia Beach, VA
Question for TL's with Nav
I finally installed Nav in my non-nav TL but I had a quick question. I posted this in the Nav DIY to but figure some people may not look at that. The car on the screen seems very jumpy, like the antenna is not getting a good signal. When I am moving, it will jump back and forth about 1/10 of a mile. For example .8 to .7 then back to .8...all while I am driving. And it does it quite a few times. When I am stationary it doesn't move around at all. The only thing that I can think is that my tint in the back is interfering with the antenna, but maybe someone here has a better idea of what's going on. Thanks for any info.
TL = Tranny Lubrication
Joined: Jul 2004
Posts: 1,308
Likes: 2
From: Sunshine State
Originally Posted by AndySara
The topic of GPS accuracy on the Acura's NAVI keeps coming up over an over again so I thought an explanation might help:
After May 2, 2000, the U.S. Air Force deactivated the software that degrades the Global Positioning System signal, upgrading civilian GPS receivers from an unaugmented accuracy of about 100 meters (330 feet) to roughly 6.3 meters (20 feet). The new software allows the U.S. to block the precision navigation signals within selected regions, while offering the improved signal service everywhere else. The reason for the signal degradation is to prevent the guidance of precision weaponry on US soil.
As illustration, consider a football stadium. With SA (selective availability) activated, you really only know if you are on the field or in the stands at that football stadium; with SA switched off, you know which yard marker you are standing on.
If the maps on the NAVI DVD were made before 2/5/2000, then that is the reason why it throws the NAVI off when you are driving down a city block that runs parallel to another that might be 75 feet away. That also explains why the NAVI is so indecisive at T or Y junctions. With the advent of new maps, and new measurement taken of maps that are several years old, our NAVI system should become more accurate.
After May 2, 2000, the U.S. Air Force deactivated the software that degrades the Global Positioning System signal, upgrading civilian GPS receivers from an unaugmented accuracy of about 100 meters (330 feet) to roughly 6.3 meters (20 feet). The new software allows the U.S. to block the precision navigation signals within selected regions, while offering the improved signal service everywhere else. The reason for the signal degradation is to prevent the guidance of precision weaponry on US soil.
As illustration, consider a football stadium. With SA (selective availability) activated, you really only know if you are on the field or in the stands at that football stadium; with SA switched off, you know which yard marker you are standing on.
If the maps on the NAVI DVD were made before 2/5/2000, then that is the reason why it throws the NAVI off when you are driving down a city block that runs parallel to another that might be 75 feet away. That also explains why the NAVI is so indecisive at T or Y junctions. With the advent of new maps, and new measurement taken of maps that are several years old, our NAVI system should become more accurate.
Thread Starter
Sippy Cup (x2)
Joined: Jun 2005
Posts: 1,961
Likes: 9
From: Virginia Beach, VA
Originally Posted by Bareback
What type of tint do you have? A metallic tint may interfere with your navigation and radio…
TL = Tranny Lubrication
Joined: Jul 2004
Posts: 1,308
Likes: 2
From: Sunshine State
Originally Posted by snowman81
To be honest I am not sure. I bought the car used with the tint already on it. I don't know if there is a way that someone can look at it and tell me but before I go replacing the tint, I want to make sure that I have ruled everything else out.
Instructor
Joined: Mar 2005
Posts: 170
Likes: 0
From: Raleigh, NC
I have a 99 TL that I upgraded to the DVD navi from a 2002 TL. All I replaced was the unit in the trunk, not the gps reciever or anything else.
Both with the hard drive system I had before and with the dvd system i have now I experienced none of the jumping you are describing. I recently got my windows tinted but went with the high dollar ceramic tint just in case.
Where did you put the gps antenna? you could try moving it and see if that makes a difference. I know even with my hand held gps if i dont have a clear view of the sky it weakens the signal and in the house forget it. maybe just moving it a little to the right or left will help. And I believe I have seen a posting that tells you how to go into setup and see how many satellites you are getting. that should tell you if it is signal as well.
Both with the hard drive system I had before and with the dvd system i have now I experienced none of the jumping you are describing. I recently got my windows tinted but went with the high dollar ceramic tint just in case.
Where did you put the gps antenna? you could try moving it and see if that makes a difference. I know even with my hand held gps if i dont have a clear view of the sky it weakens the signal and in the house forget it. maybe just moving it a little to the right or left will help. And I believe I have seen a posting that tells you how to go into setup and see how many satellites you are getting. that should tell you if it is signal as well.
Thread Starter
Sippy Cup (x2)
Joined: Jun 2005
Posts: 1,961
Likes: 9
From: Virginia Beach, VA
Originally Posted by Gingerbreadman
I have a 99 TL that I upgraded to the DVD navi from a 2002 TL. All I replaced was the unit in the trunk, not the gps reciever or anything else.
Both with the hard drive system I had before and with the dvd system i have now I experienced none of the jumping you are describing. I recently got my windows tinted but went with the high dollar ceramic tint just in case.
Where did you put the gps antenna? you could try moving it and see if that makes a difference. I know even with my hand held gps if i dont have a clear view of the sky it weakens the signal and in the house forget it. maybe just moving it a little to the right or left will help. And I believe I have seen a posting that tells you how to go into setup and see how many satellites you are getting. that should tell you if it is signal as well.
Both with the hard drive system I had before and with the dvd system i have now I experienced none of the jumping you are describing. I recently got my windows tinted but went with the high dollar ceramic tint just in case.
Where did you put the gps antenna? you could try moving it and see if that makes a difference. I know even with my hand held gps if i dont have a clear view of the sky it weakens the signal and in the house forget it. maybe just moving it a little to the right or left will help. And I believe I have seen a posting that tells you how to go into setup and see how many satellites you are getting. that should tell you if it is signal as well.
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