gps-details
COROS Activity Testing
Author: Michael George
Created: 9 July 2024
Overview
This page documents activity testing that was performed on 2024-07-03, whilst walking in an open-sky environment.
It compares speedsurfing against windsurfing to ensure the new firmware has fixed the speedsurfing smoothing issue.
- COROS APEX 2 Pro - Firmware V3.0506.0
- Speedsurfing
- Windsurfing
- Speedsurfing
- Windsurfing
1 Hz and 5 Hz data was also collected using Motion Minis.
The devices were carried as shown in this photograph, including a Garmin Forerunner 255 on the right:
Data
All of the FIT data is available for download in ZIP format:
- 2024-07-03-walking-apex-2-pro.zip - APEX 2 Pro
The OAO data from the Motions is available for download in ZIP format:
- 2024-07-03-walking-motion.zip - Motions @ 1 Hz and 5 Hz
Observations
Speedsurfing
The image below shows how position-derived speed and Doppler-derived speed are very similar, when ignoring the spikes in the position-derived speeds! There are some fluctuations, but speed and position both appear to be smoothed, despite spikes in the position-derived speeds.
Windsurfing
The image below shows how position-derived speed and Doppler-derived speed are very similar, when ignoring the spike in the position-derived speeds! There are some fluctuations, but speed and position both appear to be smoothed, despite spikes in the position-derived speeds.
Speedsurfing
The image below shows how position-derived speed and Doppler-derived speed are very similar, when ignoring the spikes in the position-derived speeds! There are some fluctuations, but speed and position both appear to be smoothed, despite spikes in the position-derived speeds.
Windsurfing
The image below shows how position-derived speed and Doppler-derived speed are very similar, when ignoring the spikes in the position-derived speeds! There are some fluctuations, but speed and position both appear to be smoothed, despite spikes in the position-derived speeds.
Comparison
Comparison of the speeds for Speedsurfing (red), Windsurfing (green), Speedsurfing (magenta), Windsurfing (yellow) vs 5 Hz Motion (blue):
Notes:
- First and last sections (same location but different direction) are pretty much identical - speedsurfing and windsurfing.
- Middle sections (same location but different direction) also very similar, bar some minor spikey variations - windsurfing and speedsurfing.
- It appears the a bug in the firmware V3.0408.0 (released in May 2024) has been resolved in V3.0506.0.
- It is interesting to contrast this data with that of the Garmin Forerunner 255, since it uses the same Airoha AG3335M chipset.
- The Garmin Forerunner 255 results for this test session can be found on a separate page.
Summary
Windsurfing and Speedsurfing
- Position-derived speed and Doppler-derived speed are very similar.
- Some fluctuations, but both are clearly smoothed.
- It appears the a bug in the firmware V3.0408.0 (released in May 2024) has been resolved in V3.0506.0.