Where Are We Now, and Where Are We Going?
In this month’s column, we travel along the road of PPP development, examine its current status, and look at where it might go in the near future.
Constellation completedThe first, or prototype, Block I QZSS satellite was launched in 2010 and, based on the positive test results from this satellite, an additional three satellites were launched in 2017, completing a four-satellite constellation. In this month’s column, we examine the recent developments of this unique and innovative navigation system.
Getting better all the time In this month’s column, we review the history and future of software-defined radios (SDRs), looking in particular at GNSS SDRs.
In April 2016, I introduced readers to useful features of our newly redesigned website at GPS World. This […]
I’m Walking Here!
An ingenious navigation technique makes use of how the human body works to develop an accurate pedestrian navigation system — one whose accuracy has been checked using drone imagery.
This year, the Munich Satellite Navigation Summit features an interactive session on the topic “Industry Meets Research: Innovation […]
Real-time single-frequency precise point positioning for cars and trains
In this month’s Innovation column, we bring together, perhaps for the first time, single-frequency and real-time PPP. Our authors describe a series of experiments they have conducted on roadways and a railway achieving sub-meter horizontal positioning at a 95 percent confidence interval. Such accuracies may already be sufficient for freeway lane and railway track guidance. But we might expect even better accuracies in the future. After all, PPP is getting better all the time.
A Wide-Area Multi-Application PNT Resiliency Solution
Enhanced Loran could furnish the wide-area complementary solution to GPS that is urgently needed for critical infrastructure components. This article highlights the state of current eLoran technology and discusses future potential.
Follow Us