ODBII data logger?
09-22-2023, 08:21 PM
#16
Advanced
Just did a quick google, and I suspect you could be right about the 1HZ GPS. I will test to see. My app is for enthusiast's not for records or competitions. But some comparative testing will need to be done for sure.
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Last_935 (09-24-2023)
10-08-2023, 08:41 AM
#17
Advanced
You may just have to test that to really figure it out. When I used to turn laps with a 5Hz GPS logger lap times were always within +/-0.1 second of a AMB transponder time, and more than 50% of the time they were less than 0.1 of a second off the transponder time. I imagine the 25Hz GNSS location systems will be improved over that.
I have not looked lately, but in 2018 phones were generally 1Hz for their location updates. Probably still pretty accurate, but I would protest the results from any competition in which 1Hz GPS signal was used to measure results in motorsport
I have not looked lately, but in 2018 phones were generally 1Hz for their location updates. Probably still pretty accurate, but I would protest the results from any competition in which 1Hz GPS signal was used to measure results in motorsport
10-22-2023, 10:48 PM
#18
Advanced
Yeah, you're correct. 1HZ GPS updates in an iPhone. But... the inbuilt accelerometer (G-forces) are not 1HZ, they are much much faster. So I can interpolate between 1HZ updates (after the fact, using accelerometer data to enhance accuracy). I love a maths problem. This should give better accuracy than no interpolation, or just linear interpolation. But I agree with you that this should not be used for motorsport competition.