what is exit? what is deployment

[phoenixlpr 0]

I'm working on my gps data logger of my own.

In the perspective of the gps logger how would you define exit, deployment?

[lost_n_confuzd 0]

Quote

I'm working on my gps data logger of my own.

In the perspective of the gps logger how would you define exit, deployment?

If I understand you correctly...to put it in GPS terms?

Exit - Jump elevation

Deployment - Pull elevation

Maybe, no?

[phoenixlpr 0]

You got a set of data. Each entry has time, position, elevation, ground speed.

How can you find possible exit/deployment from the data?

[JackC 0]

Just look for points where the vertical speed changes abruptly. For exit, you want the point where the vertical speed changes from close to zero to 100mph+ with a fairly well defined acceleration curve. For deployment look for when the vertical speed slows dramatically, 100mph+ to almost zero in a few seconds. Or you could look for the points where the altitude starts and stops decreasing rapidly.

[JohanW 0]

For wingsuit flights, you may very well want the impossible.

Obviously, you look at the biggest accelerations, positive for exit and negative for deployment (or the other way around - depends). But exit a Skyvan, pop up, fly, flare the suit halfway down, fly, deploy, spiral the canopy down, and you just can't see from the data what happened when.

I know I can get higher instantaneous speeds under canopy than I can get in my wingsuit. That's a Triathlon 120 vs a Skyflyer 3S. Lots of people fly bigger suits and smaller canopies (some even at the same time ).

Can't be done, not perfectly.

A quick and dirty approximation should not be too difficult however, and refine from there. How complicated do you want your algorithm to become?

Johan.
I am. I think.