PPP

Improving Reliability and Assessing Performance of Global Navigation Satellite System Precise Point Positioning Ambiguity Resolution

Conventional Precise Point Positioning (PPP) has always required a relatively long initialization period (few tens of minutes at least) for the carrier-phase ambiguities to converge to constant values and for the solution to reach its optimal …

Cadastral Surveyors in rural areas. Do you need ambiguity resolution in multi-GNSS PPP for accuracy or integrity?

Over the past two decades, the PPP user model has been constantly evolving. Each iteration, adding improvements in terms of accuracy and most notably convergence. Research objectives focused on examining the different performance indicators of PPP …

An assessment of the interoperability of PPP-AR network products

Integer ambiguity resolution of carrier-phase measurements from a single receiver can be implemented by applying additional satellite corrections (products) to mitigate unmodelled satellite equipment delays. Interoperability of different PPP-AR …

Performance analysis of atmospheric constrained uncombined multi-GNSS PPP

The general objective of this study is to analyze the performance of Precise Point Positioning (PPP) convergence and initialization while stochastically constraining the atmosphere. One specific objective of this study is to review the performance of …

Assessing PPP ambiguity resolution within Ontario

Precise Point Positioning (PPP) data processing technique has been developed over the past 15 years to become a standard method for a growing number of positioning and navigation applications. Research objectives consisted of examination of the …

Innovation: Clarifying the ambiguities : Examining the interoperability of precise point positioning products

Ambiguity resolution in precise point positioning (hereafter, PPP-AR) requires that hardware delays within the GPS measurements be mitigated, which will then allow for resolution of the integer ambiguities within the carrier-phase measurements. …

Challenges in Assessing PPP performance

The Precise Point Positioning (PPP) GPS data processing technique has developed over the past 15 years to become a standard method for growing categories of positioning and navigation applications. The technique relies on single receiver point …

Reduction of PPP convergence period through pseudorange multipath and noise mitigation

Pseudorange multipath and pseudorange noise are the largest remaining unmanaged error sources in PPP. It is proposed that by reducing the effects of multipath and noise on the pseudorange observable, accurate estimates of carrier phase float …

Assessing PPP uncertainty in Ontario: How realistic are PPP uncertainties?

Software-determined position uncertainty is main indicator of solution accuracy in PPP, as a reference solution may not available. Research presents novel analysis of PPP uncertainty realism in southern Ontario, and quantifies data collection periods …

Evaluation Of Network Rtk Performance And Elements Of Certification – A Southern Ontario Case Study

Over the past decade, network RTK technology has become popular as an efficient method of precise, real-time positioning. Its relatively low-cost and single receiver ease-of-use has allowed it to mostly replace static relative GPS and single …