DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS

GNSS PPP WORKSHOP: REACHING FULL POTENTIAL 12-14 JUNE 2013, OTTAWA

What will near-term PPP user solutions “look like” and be capable of?

Types of measurements processedMitigation of error sourcesSolution convergence periodIntegration with other techniques and technologiesCostOther?

DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS

GNSS PPP WORKSHOP: REACHING FULL POTENTIAL 12-14 JUNE 2013, OTTAWA

Types of measurements processed:• Code and phase• Phase only (?)• Multiple frequencies on one constellation• Multiple frequencies between constellations

Q: which is more important: more frequencies or more constellations?

DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS

GNSS PPP WORKSHOP: REACHING FULL POTENTIAL 12-14 JUNE 2013, OTTAWA

Mitigation of error sources:• Ionosphere• Troposphere• Satellite biases• Receiver biases• Code noise and multipath• Phase noise and multipath• Others?

Q: what is optimal observation combinations in terms of error mitigation?

DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS

GNSS PPP WORKSHOP: REACHING FULL POTENTIAL 12-14 JUNE 2013, OTTAWA

Initial solution convergence period:• Reduction from tens of minutes to …• Consistency between days and sites• Definition of convergence

Solution re-convergence period:• Data requirements• Length of data gaps• Ionospheric variation during gaps

Q: what are the limiting factors for fast convergence/AR?

DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS

GNSS PPP WORKSHOP: REACHING FULL POTENTIAL 12-14 JUNE 2013, OTTAWA

Integration with other techniques and technologies:• PPP and RTK• PPP-RTK or RTK-PPP, …?• PPP and Inertial• Others

Q: what techniques have you integrated with PPP?

DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS

GNSS PPP WORKSHOP: REACHING FULL POTENTIAL 12-14 JUNE 2013, OTTAWA

Cost:• Multi-GNSS receivers and antennas:– Dual- versus single-frequency– Geodetic versus low-cost

• Corrections:– Terrestrial versus satellite broadcasting– Free versus commercial services

Q: what is the chance that GNSS satellites broadcast correction data enabling PPP?

DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS

GNSS PPP WORKSHOP: REACHING FULL POTENTIAL 12-14 JUNE 2013, OTTAWA

Other?