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Cellular forums Home > Archive > GPS > August 2007 > Enhanced positioning using solid state gyro technology (was: TomTom GO 920 Announced)
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Enhanced positioning using solid state gyro technology (was: TomTom GO 920 Announced)
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| Hans-Georg Michna 2007-08-30, 4:33 am |
| On Thu, 30 Aug 2007 09:33:47 +0100, Darren Griffin -
PocketGPSWorld.Com wrote:
>enhanced positionining using solid state gyro technology
Does anybody know how that works?
I could imagine that rotations around the vertical axis are
relatively easy to detect, but how precisely could it detect
straight movements and accelerations?
Or is it an intertial navigation system, detecting the
gravitation vector? That's also difficult over the short term,
because of the typical hefty accelerations in a car.
Hans-Georg
--
No mail, please.
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| Darren Griffin - PocketGPSWorld.Com 2007-08-30, 4:33 am |
| On 2007-08-30 09:50:17 +0100, Hans-Georg Michna
<hans- georgNoEmailPlease@m
ichna.com> said:
> Does anybody know how that works?
>
> I could imagine that rotations around the vertical axis are
> relatively easy to detect, but how precisely could it detect
> straight movements and accelerations?
>
> Or is it an intertial navigation system, detecting the
> gravitation vector? That's also difficult over the short term,
> because of the typical hefty accelerations in a car.
I don't have any details as yet, there are a number of simsilar
solutions becoming available, Mio were demonstrating one at Computex in
Taipei.
Don't R/C Helicopters use some form of SS Gyro technology?
--
Darren Griffin
PocketGPSWorld - www.PocketGPSWorld.com
The Premier GPS Resource for News, Reviews and Forums
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| Ted Lindgreen 2007-08-30, 7:33 am |
| In article < m51dd3h29jc89nhqbkhc
7mi95lannnrm6p@4ax.com>,
Hans-Georg Michna <hans- georgNoEmailPlease@m
ichna.com> wrote:
>On Thu, 30 Aug 2007 09:33:47 +0100, Darren Griffin -
>PocketGPSWorld.Com wrote:
>
>
>Does anybody know how that works?
>
>I could imagine that rotations around the vertical axis are
>relatively easy to detect, but how precisely could it detect
>straight movements and accelerations?
I guess the solid state gyro is used only to stabilize the picture
when course-up display is selected and you're going too slow to get
a reliable movement vector.
-- ted
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| Hans-Georg Michna 2007-08-30, 7:33 am |
| On Thu, 30 Aug 2007 10:31:20 +0100, Darren Griffin -
PocketGPSWorld.Com wrote:
>Don't R/C Helicopters use some form of SS Gyro technology?
Yes, but that's easy, as they only want to stabilize against
sudden rotations, something every gyro measures with ease.
That's also what I already wrote---it's easy to detect curves,
i.e. rotations about the vertical axis. But that alone is
useless, as long as the device has no clue about speed and
acceleration.
Hans-Georg
--
No mail, please.
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