GPS based Lap Timer
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Originally Posted by Windscreen,Jul 27 2005, 12:16 PM
I would like to be able to analyze lines with at least 6"-12" of positional accuracy. Do any of these GPS or GPS/accelerometer systems provide that sort of relative accuracy over, say, a 60 to 90 minute session? What is the best relative accuracy provided during a 60 minute time period?
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Originally Posted by Windscreen,Jul 27 2005, 01:16 PM
As an autocrosser, I am also interested in data acquisition. I've been using a simple biaxial accelerometer based system for some time: Geez. It produces crude track maps, but it does a good job to show where you didn't fully utilize the car and could have gone faster. However, I've reached the point where it is usually easy to fully utilize the car, and I need to work more on racing lines and car placement.
These GPS systems intrigue me, but I think my positional accuracy requirements are too high. At the level I race at, driving lines are what I most need to analyze. I would like to be able to analyze lines with at least 6"-12" of positional accuracy. Do any of these GPS or GPS/accelerometer systems provide that sort of relative accuracy over, say, a 60 to 90 minute session? What is the best relative accuracy provided during a 60 minute time period?
Steve
These GPS systems intrigue me, but I think my positional accuracy requirements are too high. At the level I race at, driving lines are what I most need to analyze. I would like to be able to analyze lines with at least 6"-12" of positional accuracy. Do any of these GPS or GPS/accelerometer systems provide that sort of relative accuracy over, say, a 60 to 90 minute session? What is the best relative accuracy provided during a 60 minute time period?
Steve
Also, do they make cone sensors? I would think these would look similar to curb feelers
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Originally Posted by Windscreen,Jul 27 2005, 01:16 PM
I would like to be able to analyze lines with at least 6"-12" of positional accuracy. Do any of these GPS or GPS/accelerometer systems provide that sort of relative accuracy over, say, a 60 to 90 minute session? What is the best relative accuracy provided during a 60 minute time period?
Steve
Steve
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From: Delaware, OH
Originally Posted by RandyP,Jul 27 2005, 07:46 PM
I don't think this would be a problem, considering that you need to be accurate for less than a minute.
I think he's referring to an entire heat, were he'd have maybe 3 runs in the course of an hour or two.
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Just got back from the track today. I was trying the G2X for the first time. I was a little concerned, because the lower half of Pacific Raceways (affectionately called "the valley of death") is down in a ravine and tree-lined (runoff room? what's that?). But the G2X seemed to have no problems at all. I haven't yet loaded the data into the PC and analyzed it. I'll post again when I do.
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From: Covington WA, USA
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Some screenshots and a little bit of discussion. This is the first time I've had this sort of data available, so I'm still trying to figure out how to interpret it.
Some screenshots and a little bit of discussion. This is the first time I've had this sort of data available, so I'm still trying to figure out how to interpret it.
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From: Bay Area, CA