|
Cellular forums Home > Archive > Garmin GPS > June 2005 > Re: Accuracy of Speed measurements?
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
| Author |
Re: Accuracy of Speed measurements?
|
|
| Hoshisato 2005-06-15, 9:55 am |
| Are they about as accurate as the radars used by the police therefore?
The frequence of the signals used by the radar and the satellite is
probably different and could leave room for different margins of error.
Would a track log hold up in court when accused of speeding whilst the
GPS indicated that you were moving below the maximum speed? :-)
| |
| Holger Issle 2005-06-15, 9:55 am |
| On 15 Jun 2005 01:42:50 -0700, "Hoshisato" wrote:
quote:
> Are they about as accurate as the radars used by the police therefore?
> The frequence of the signals used by the radar and the satellite is
> probably different and could leave room for different margins of error.
About as good I would say.
quote:
> Would a track log hold up in court when accused of speeding whilst the
> GPS indicated that you were moving below the maximum speed? :-)
Forget it. First, the track log can be manipulated easily since it is
unprotected text normaly. Second, depending on your receiver, the
indicated speed may be smoothened by 1 to 5 second intervals, e.g. may
be lower than the actual speed at the point of radar measurement.
Third, government & police will never give up on their most effective
source of income.
--
Ciao,
Holger (GUS-KOTAL, GUS#1100)
90-92 Honda CB400 10 Mm | 93-95 Yamaha TDM 850 26 Mm
95-97 KTM 620 LC4 13 Mm | seit 97 BMW R1100GS 50 Mm (Die Renndrecksau!)
cu @ http://www.issle.de
| |
|
| In article < n9tva1la0k3944quoafv
f3tnrh1up5hbvk@4ax.com>,
Holger Issle <Holger@issle.de> wrote:
quote:
> On 15 Jun 2005 01:42:50 -0700, "Hoshisato" wrote:
>
>
> About as good I would say.
>
>
> Forget it. First, the track log can be manipulated easily since it is
> unprotected text normaly. Second, depending on your receiver, the
> indicated speed may be smoothened by 1 to 5 second intervals, e.g. may
> be lower than the actual speed at the point of radar measurement.
> Third, government & police will never give up on their most effective
> source of income.
Nope, speed accuracy of GPS isn't even close to the accuracy of a Ku
or Ka Radar Speed Senser. The difference is orders of magnitude.
Doesn't even come close to being good enough for Evidence in a
Court of Law. Also Your GPS isn't NIST Traceable, so you have no
reference to a Traceable Standard. Better look for a different
way to beat that Speeding Ticket.
Me
|
|
|
|
|