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. …

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 …

Do we need ambiguity resolution in multi-GNSS PPP for accuracy or integrity?

With the advent of quad-constellation, triple-frequency and external atmospheric constraints being provided to the PPP user, the novelty and focus of this paper is in the quest to answer the question: Do we really need ambiguity resolution in …

Examining precise point positioning now and in the future

PPP. It’s one of the many acronyms (or initialisms, if you prefer) associated with the uses of global navigation satellite systems. It stands for precise point positioning. But what is that? Isn’t all GNSS positioning precise? Well, it’s a matter of …

Examining the interoperability of PPP-AR products

Integer ambiguity resolution of carrier-phase measurements from a single receiver can be implemented by applying additional satellite products to mitigate the unmodeled satellite hardware delay. Interoperability of different PPP-AR products would …