CEA-Leti and Orolia announce FlexFusion positioning and navigation technology
September 12, 2019
Combining data from GNSS and IMUs ensures accuracy during GNSS outages. Leti, a research institute of France’s CEA […]
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Combining data from GNSS and IMUs ensures accuracy during GNSS outages. Leti, a research institute of France’s CEA […]
How four frequencies help when the ionosphere is disturbedThe authors explore how cycle slips in Galileo carrier-phase measurements can be more effectively detected using four frequencies.
ComNav Technologies has released its new generation Quantum algorithm to international market. The Quantum algorithm can be easily achieved through a firmware […]
Using HD Radio Signals for Navigation By Ananta Vidyarthi, H. Howard Fan and Stewart DeVilbiss THE YEAR WAS […]
By Jeffrey Coffed and Joseph Rolli, Harris The first and best step to combat the growing worldwide problem […]
Precise, Accurate and Multipath-Resistant Distance and Speed Measurements
In this month’s column, we take a look at a short-distance two-way ranging system using a 5.8-GHz carrier to supply not only precise and accurate distance measurements but also complementary measurements of speed.
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.
Analysis of new Galileo signals at an GBAS compares noise and multipath in their performance to GPS L1 and L5. Even after smoothing, Galileo signals perform somewhat better than GPS and are less sensitive to the smoothing time constant.
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