TAG: precise point positioning

UNB GAPS for Precise Point Positioning Gets Update

September 9, 2015By

The next version of the UNB GPS Analysis and Positioning Software (GAPS), version 5.9.1, is now available. The new version of the precise point positioning software includes several updates and new features, including creation of GAPS Basic and Advanced user submission pages. The GAPS Basic user submission page allows for quick and easy submission of observation files for users who frequently use... read more

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A Scintillating Project

August 1, 2015By
Setting up the receiver antenna for the offshore trial on board the Geograph vessel.

Countering Ionospheric Disturbances Affecting GNSS in Brazil By Marcio Aquino After 27 months of intense research, the CALIBRA project ended successfully in February 2015, with the project team devising solutions to tackle the effects of perturbations typical of the Brazilian ionosphere on high-accuracy GNSS positioning. CALIBRA was funded by the European Union and the European GNSS Agency. Kicked off in 2012, CALIBRA first confirmed the vulnerability of... read more

Innovation: Carrier-Phase Ambiguity Resolution

April 3, 2015By
FIGURE 9. Network used for the triple-frequency PPP study.

Handling the Biases for Improved Triple-Frequency PPP Convergence
Precise point positioning (PPP) can be considered a viable tool in the kitbag of GPS positioning techniques. One precision aspect of PPP is its use of carrier-phase measurements rather than just pseudoranges. But there is a catch. Often many epochs of measurements are needed for a position solution to converge to a sufficiently high accuracy. In this month’s column, we look at how using measurements from three satellite frequencies rather than just two can help. read more

PPP Solution from NovAtel Improved for Sub-Decimeter Accuracy

March 11, 2015By

NovAtel has announced significant performance improvements to its precise point positioning (PPP) solution. NovAtel CORRECT with PPP will now offer the new TerraStar-C correction service as its exclusive source for satellite-delivered PPP correction data. TerraStar-C contains an enhanced correction data set that enables up to 4-centimeter accuracy and instant re-convergence when combined with the receiver error models and positioning algorithms offered... read more

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Veripos Offshore PPP Services Improve Accuracy

March 11, 2015By

Veripos, a supplier of high-precision GNSS positioning facilities to offshore and associated industries, has upgraded its Apex and Apex² precise point positioning (PPP) services. The services now typically provide users with a horizontal position accuracy of better than 5 cm and 12 cm in the vertical at the two sigma (95 percent) confidence level. The enhanced levels of performance, now available to... read more

New Version of GAPS PPP Software Available

March 10, 2015By

A new version of the online GAPS precise point positioning software is now available. GAPS — GPS Analysis and Positioning Software — is offered by the University of New Brunswick Geodesy and Geomatics Engineering Department. The latest release provides capabilities for handling GPS data files in both RINEX 2 and 3 formats, whether Hatanaka-compressed or not, along with a number of receiver raw file formats. Also,... read more

New Version of PPP-Wizard Demonstration Software Published

October 9, 2014By

A new version of the open source PPP-Wizard user software has been published. The link to download the wizard is being provided on request, so the International GNSS Service (IGS) can keep track of interested users. The PPP-Wizard is defined as a precise point positioning with integer and zero-difference ambiguity resolution demonstrator. Available for non-commercial purposes, it performs real-time PPP using corrections streams provided by the IGS Real... read more

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NovAtel Launches Correct OEM Positioning Solution

November 11, 2013By
NovAtel Correct.

NovAtel, Inc., OEM provider of high-precision GNSS positioning products, has launched its NovAtel Correct positioning technology. NovAtel Correct optimally combines data from multiple GNSS satellite constellations with corrections from a variety of sources, to deliver the best position solution possible. NovAtel Correct provides integrators with the opportunity to choose pricing and subscription options that best match their OEM business objectives. Delivery... read more