1. DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS GNSS PPP W ORKSHOP : R EACHING F ULL P OTENTIAL 12-14 J UNE 2013, O TTAWA What will near-term PPP user solutions “look like” and be capable of? Types of measurements processed Mitigation of error sources Solution convergence period Integration with other techniques and technologies Cost Other?

2. DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS GNSS PPP W ORKSHOP : R EACHING F ULL P OTENTIAL 12-14 J UNE 2013, O TTAWA 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?

3. DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS GNSS PPP W ORKSHOP : R EACHING F ULL P OTENTIAL 12-14 J UNE 2013, O TTAWA 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?

4. DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS GNSS PPP W ORKSHOP : R EACHING F ULL P OTENTIAL 12-14 J UNE 2013, O TTAWA 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?

5. DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS GNSS PPP W ORKSHOP : R EACHING F ULL P OTENTIAL 12-14 J UNE 2013, O TTAWA 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?

6. DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS GNSS PPP W ORKSHOP : R EACHING F ULL P OTENTIAL 12-14 J UNE 2013, O TTAWA 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?

7. DISCUSSION SESSION 3: FUTURE PPP USER SOLUTIONS GNSS PPP W ORKSHOP : R EACHING F ULL P OTENTIAL 12-14 J UNE 2013, O TTAWA Other?