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Accuracy of Approach R10 Radar

The Approach® R10 portable golf launch monitor uses radar to analyze several metrics like your club path, launch angle, ball speed, and estimated distances and direction. It does not use GPS, but based on its placement to the ground, it will be able to provide shot data without GPS data or elevation information. The accuracy for the radar metrics are outlined below.

Radar Accuracy

Measured by Radar

  • Club head speed accuracy: +/- 3 mph
  • Ball speed accuracy: +/- 1 mph
  • Launch angle accuracy: +/- 1 degree
  • Launch direction accuracy: +/- 1 degree

Calculated by Algorithm

  • Club face angle accuracy: +/- 2 degrees
  • Apex height accuracy: +/- 5 feet
  • Carry distance accuracy: +/- 5 yards

The accuracy depends on proper placement of the Approach R10. For aligning the device properly, see - Troubleshooting Radar Features of the Approach R10.


Important Information About Ball Spin Rate Calculation 

Ball Spin is calculated differently depending if you are hitting Indoors or Outdoors. 

Indoors

  • Calculated using a machine-learned model that uses measured radar metrics as inputs.

Outdoors

  • Calculated by one of the following:
    • Observed ball trajectory by the radar
    • Measured by the radar 

NOTE: If hitting outdoors into a net the device will use the Indoors calculation.


Changes to Ball Spin Rate Calculation

The below factors have been added to how the Approach R10 factors ball spin with software version 3.80 or newer. For help updating your Software, see Installing the Latest Updates for Your Approach R10.

  • Spin is not measured when the ball is seen for less than 20m (i.e. only outdoors at the range).
  • Spin is not measured for balls going slower than 90 mph.
  • Spin measurement is designed to work with standard golf balls, however, some balls will work better than others due to their profile and composition.
    NOTE: For using Titleist RCT balls, see - Using a Titleist RCT Ball With the Approach R10.
  • If spin measurement is not possible the system falls back to the alternative calculation method.
  • Intentionally marked balls (e.g. metallic stickers) may degrade system performance.
  • Wind may affect the spin measurement accuracy (particularly head or tail wind).

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