DRAFT-【STA】RTK Ski Turn Analyzer[STA] Introduction ＜DIY＞

I live in Nagano pref. in Japan.The1998 Winter Olympic games were held in Nagano.
I think ,Skiing is a sport of self-gratification,that is the origin of fun.
But I can’t get out of my Ski Turn habit. For 5 years , I tryed to see my turn objectively.
I had tryed to measure using MEMS Accelerometers ,I couldn’t get any Ski Turn parameters due to vivbration noise and Integration error.
2019 Dec. I was lucky to find the ArduSimple’s SimpleRTK2B heading kit.

1:Purpose of the system

A. Quantification of Ski turn Skidding
B. RL Ski parameter (headSpeed,headAngle,longtitude,latitude,height,ski Slope)
C. Time accuracy(Sampling period,RL Ski RTK Synchronizing)
D.Easy for everyone to use ,easy to understand,
E.Analyzed Results see soon after ski run

2:Ski Turn Analyzer [STA] description

2-1:System Outline
GNSS board: Ardusimple SimpleRTK2B Headingkit x2
Microcomputer: M5StickCx2,M5Atom-TFx2 (Arduino IDE Programming)
F9P setting: SimpleRTK2B master configuration file Movingbase setting rate 8Hz ourput NAV-PVT,NAV-RELPOSNED
RTK: Softbank ALES NTRIP service(3300 stations in japan) https//www.softbank.jp/biz/iot/service/ichimill

2-2:Ski Antenna setting

※　I improve Rover antenna position farther back for avoid covering of telemark sikiing form.

2-5:On Skiing Mount
Above system worn on skier chest.

Mouting View link ti YOUTUBE

2-4:Data Analysys
I am still improving programs. Latest rev 016 is below

Above Analysys Movie to YOUTUBE link

2-5 STA Algorithm under development
A ski Run Estimation to compare with your own senses
Speed and Turn Arc and range of Motion Angle and Skidding Angle

example below graph
A: Speed(pink) not controled
B: Motion-HeadAngle range decreasing
C: Skid Angle range decreasing