A new SAE standard for GPS receivers is a natural complement to a newly receptive posture toward innovation unmistakably expressed at high levels in FAA and Mitre (ICNS 2018). Techniques introduced over decades by this author (many on this site) can finally become operational.
1980s euphoria over GPS success was understandable but decision-makers, lulled into complacency, defined requirements in adherence to antiquated concepts. Familiar examples (full-fix-every-time, with emphasis on position irrespective of dynamics) only begin a broad range revealing opportunities long deferred. “Keep it simple” produced decades of oversimplification, strangling efforts to overcome adversity. “Integration” became a misnomer, inappropriately bestowed as “legacy systems” slavishly followed paths precluding resilience.
Not all of the issues presented to the National Advisory Board for Satellite Navigation in 2015) are obvious, even to experienced designers. A crucial point is insight, without which even a mathematically 100% correct formulation plus
coding can fail operationally; real-world examples illustrating that point are included in the course described below.
As procedures thus far unalterable are finally considered open to revision, APPLIED TECHNOLOGY INSTITUTE LLC of Annapolis MD offers a May 21-24 course taught by the author of capabilities reaching over an exceptionally wide range (inertial, magnetometer, radar, optical, GPS pseudorange, carrier phase, … ).
Comments by former Inst-of-Navigation presidents (no stone unturned; teeming with insights that are hard to find or unavailable elsewhere … ) are likewise true of the course material which, in common with the book (provided as part of the course registration), has a major focus on robustness so urgently needed in coming developments for navigation plus myriad modes of tracking as well). Hope to see you there.
To access the free offer below, become a subscriber byclicking here now. The free video viewing will be available to all subscribers beginning on the afternoon of November 15th
I’m giving free access to a 20-minute video, available for three days to all subscribers. It is the first of three segments I’ve put together for two reasons:
1) Dearth of time during a short course doesn’t allow adequate coverage of applicable matrix theory in class.
2) The material was organized to drive home a fundamental point: Math without insight is grossly inadequate. That lesson will be useful to professors, instructors, and mentors as well as designers.
I start with a no-math real-world example dramatically illustrating preference for insight over blind acceptance of computer outputs.
Each of the three parts has a preview that can be watched free at any time. Click Here
If you click on any section, options include a preview for no cost (white circle on the right). Attendees of any course I teach will receive free 3-day access all three parts, and others (e.g., students or trainees) would also benefit from this information. An admission: The recording was done during hay-fever season; I sound (and look) like it. That’s unimportant in comparison to the message.
In addition you will receive a 100 page excerpt form my latest book GNSS Aided Navigation and Tracking
MORE TO COME
My website now has excerpts from a wide variety of topics, all of which can be expanded further into helpful learning aids — backed by a long history of real-world experience and insights very much in need today. Occasionally I make incremental additions generated for release. As always, subscribers have the option for subsequent opt-out with no danger of further contact, spam, etc.
A video completed recently provides just enough matrix theory needed for Kalman filtering. It’s available for (1) purchase or 72-hour rent at low cost or (2) free to those attending courses I teach in 2014 or after (because the short durations don’t allow time to cover it). The one-hour presentation is divided into three sections. Each section has a preview, freely viewable.
The first section, with almost NO math, begins by explaining why matrices are needed — and then immediately emphasizes that MATH ALONE IS NOT ENOUGH, To drive home that point, a dramatic illustration was chosen. Complex motions of a satellite, though represented in a MATHEMATICALLY correct way, were not fully understood by its designers nor by the first team of analysts contracted to characterize it. From those motions, shown with amplitudes enlarged (e.g., doubled or possibly more) for easy visualization, it becomes clear why insight is every bit as important as the math.
For some viewers the importance of insight alone will be of sufficient interest with no need for the latter two sections. Others, particularly novices aspiring to be designers, will find the math presentation extremely helpful. Straight to the point for each step where matrices are applied, it is just the type of information I was earnestly seeking years ago, whole “pulling teeth” to extract clarification of ONLY NECESSARY theory without OVER simplification.
The presentation supplies matrix theory prerequisites that will assist aspiring designers in formulating linear(ized) estimation algorithms in block (weighted least squares) or sequential (recursive Kalman/EKF) form. Familiar matrix types (e.g., orthogonal, symmetric), their properties, how they are used — and why they are useful — with interpretation of physical examples, enable important operations both powerful and versatile. An enormous variety of applications involving systems of any order can be solved in terms of familiar expressions we saw as teenagers in college.
Useful for either introduction or review, there is no better way to summarize this material than to repeat one word that matters beyond all else — INSIGHT.