Calculate speed when skiing?

[HS]

I'm working with a specially designed application for calculating the speed
when skiing - without having any fixed reference points. I have found some
wathes calculate the speed based on using altimeter and clinometer. Does
anyone have some experience with this kind of application, or better ideas?

 

[Bob Masta]

On Sun, 3 Oct 2004 10:56:36 +0200, "HS" <he-stava@online.no> wrote:

I'm working with a specially designed application for calculating the speed
when skiing - without having any fixed reference points. I have found some
wathes calculate the speed based on using altimeter and clinometer. Does
anyone have some experience with this kind of application, or better ideas?

No experience, but you should be able to do this by Doppler shift
reflected off the snow, probably with everything mounted on a ski.
You can probably use optical, radar, or ultrasound. Just a thought.


Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com

 

[Tom Biasi]

"HS" <he-stava@online.no> wrote in message
news:69P7d.13052$g%5.172395@news2.e.nsc.no...

I'm working with a specially designed application for calculating the
speed
when skiing - without having any fixed reference points. I have found some
wathes calculate the speed based on using altimeter and clinometer. Does
anyone have some experience with this kind of application, or better
ideas?

GPS

 

[John Fields]

On Sun, 3 Oct 2004 10:56:36 +0200, "HS" <he-stava@online.no> wrote:

I'm working with a specially designed application for calculating the speed
when skiing - without having any fixed reference points. I have found some
wathes calculate the speed based on using altimeter and clinometer. Does
anyone have some experience with this kind of application, or better ideas?

---
3 axis accelerometer and a clock?

--
John Fields

 

[zipzit]

Its going to be pretty tough to beat GPS for this application.... gps
includes speed and vertical displacement.

Have you seen those recording devices they rent at the big ski slopes?
They tell you vertical drop, speed, give you a map at the end of the
day on your entire route, etc..

I think the armband unit rents for $20 / day or so.

LB
Detroit

 

[David L. Jones]

zipzit@yahoo.com (zipzit) wrote in message news:<39a4cdf7.0410031742.4ceade6d@posting.google.com>...

Its going to be pretty tough to beat GPS for this application.... gps
includes speed and vertical displacement.

Have you seen those recording devices they rent at the big ski slopes?
They tell you vertical drop, speed, give you a map at the end of the
day on your entire route, etc..

I think the armband unit rents for $20 / day or so.

You can buy a wrist mounted Garmin ForeTrex GPSr for just over $100.

Dave