Galileo App Competition 1st Prize Winner

GADIP3 GNSS Android-based Dual-frequency

Iono-estimated Precise Point Positioning

by

O ThiSaVRoS team

Prague, 26/06/2019

Team Composition – Ο Θησαυρός O ThiSaVRoS, a Greek word for “TREASURE”…

Lotfi Massarweh (Italian)

Francesco Darugna (Italian)

Dimitrios Psychas (Greek)

Jon Bruno (Spanish)

The project is supported

by EU’s Horizon 2020

research & innovation

programme under the

agreement No 722023.

Team Composition – Ο Θησαυρός O ThiSaVRoS, a Greek word for “TREASURE”…

Lotfi Massarweh (Italian)

Francesco Darugna (Italian)

Dimitrios Psychas (Greek)

Jon Bruno (Spanish)

Jin Zhao (Chinese)

Milestones May 2016: Google announces the availability of GNSS raw measurements

from Android 7 (Nougat).

September 2017: Broadcom launches the BCM47755, world’s first mass-

market dual-frequency GNSS sensor hub.

May 2018: The Xiaomi Mi 8 becomes the world’s first smartphone making

use of GNSS dual-frequency measurements.

October 2018 – April 2019:

Galileo App Competition, organized

by the European Space Agency.

Milestones May 2016: Google announces the availability of GNSS raw measurements

from Android 7 (Nougat).

September 2017: Broadcom launches the BCM47755, world’s first mass-

market dual-frequency GNSS sensor hub.

May 2018: The Xiaomi Mi 8 becomes the world’s first smartphone making

use of GNSS dual-frequency measurements.

October 2018 – April 2019:

Galileo App Competition, organized

by the European Space Agency.

Introduction to GADIP3 Mission: “To provide precise positioning for everyone…”

Common User Provide a quick position

Provide an intuitive interface

…and access to many options!

Advanced User Provide an accurate position

Provide real-time information

…and store all GNSS data!

Video Demo

NTRIP implemented

Decode RTCM SSR-messages:

• 1060 (GPS)

• 1243 (Galileo)

Features

• Function-oriented tabs

• Smooth page transition

• Enabling post-processing

Pedestrian tests Different scenarios has been

used for validation purposes.

Test #1 (left)

• Galileo-only

• Dual-frequency

• Morning time

Test #2 (right)

• GPS + Galileo

• Dual-frequency

• Evening time

Static tests settings DATE: 24th of June 2019

LOCATION: geodetic pillar on rooftop

MODES:

- GPS L1 or L5 or L1+L5

- Galileo E1 or L5 or E1+E5a

- GPS+Galileo L1/E1

- GPS+Galileo L1/E1+L5/E5a

Cutoff mask at 7.5° elevation, and discards data

if C/N0 [dB-Hz] <20 (L1/E1), <17 (L5/E5a)

Static tests results GPS SF (L1) GPS+GAL DF

Number of available observations

increases substantially

Higher repeatability is achieved

with a GPS+Galileo DF solution

Quality of raw measurements

is the key factor for a robust

and precise positioning

Conclusions

• The access to dual-frequency raw measurements is paving the way

towards new frontiers for smartphone-based positioning.

• GADIP3 provides a complete GNSS positioning framework for everyone.

• Modularity allows user-friendly and easy selection of several options.

GADIP3 is the user-driven app

on the edge of GNSS technology.

Future Works

• Further tests needed on different Android

smartphones and/or GNSS chipsets.

Version 1.1.2.1 has been now

released on Google Play Store!

• Activation of the PPP algorithm, along with

improvements for the Iono-estimation.

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O ThiSaVRoS

or

Thanks for your

attention

Supported by the European Space Agency

Questions?