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Engineering

Improving Pickups with Better Location Accuracy

November 6, 2019 / Global
Featured image for Improving Pickups with Better Location Accuracy
Figure 1. The barometer’s measured altitude, shown in blue, correlates well with the altitude measured using GNSS, in red, during a trip in San Francisco. The barometer’s altitude measurement can provide better accuracy than GNSS in locations where satellite signals become weak.
Figure 2. In a drive through San Francisco’s Broadway tunnel, we can see where the GNSS location fails due to satellite signal loss. However, the fusion location output, shown in red, continues through the tunnel.
Figure 3. In areas where buildings interfere with satellite signals, such as this urban canyon, raw GNSS, depicted in green, strays significantly from the actual location of the vehicle. Combining GNSS with other sensors through fusion, as shown in red, creates a more accurate location signal.
Hemabh Shekhar

Hemabh Shekhar

Hemabh Shekhar is a technical lead manger on Uber's Sensing & Perception team.

Vivek Sankaravadivel

Vivek Sankaravadivel

Vivek Sankaravadivel is a senior software engineer on Uber's Sensing & Perception team.

Posted by Hemabh Shekhar, Vivek Sankaravadivel

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