RAW GNSS in Android Nugat

Android N and GNSSpyData Meetup

Lukasz K Bonenberg

lkbonenberg@gmail.com@LKBLab

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RAW GNSS?

Figure 1: Android Nugat

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meaning?

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Existing API

Figure 2

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New Android Nugat API v24+

Figure 3

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A challenge

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It’s hardware stupid

Figure 4

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GNSS experts only?

Figure 5: Pseudoranges

Pseudorange is transmission time from satellite to the receiver:

L =T receiver

arrival− T

satellitetransmission

c 8

Matlab implementation

Google released Matlab code. . .

. . . but not python

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An opportunity

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Improved position

• using external corrections (DGPS)• reduce errors in urban areas (GNSS shadowing)• use sensor fusion• ect

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Mass market data

• data collection & analysis• position quality estimation• combining data• other DS tasks. . .

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Goal

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Creation of dedicated python library:

• abstracting calculations - we only want position• actively used for real-life problem

• DS• developers• scientists

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Useful link

• Google code• my gitHub with python code• my gitHub with edits to google code• Rokybun blog• BlackDotGNSS blog

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Take away notes

• Android RAW GNSS can improve position• Matlab implementation exist• python one does not• an opportunity to create python library

• multi-application• used across board

lkbonenberg@gmail.com

@LKBLab

https://github.com/DfAC

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