Blog
Incomes Move Across Sydney
Between 2006 and 2011 a little fewer than 400,000 households (around a quarter of the total) moved at least once within the Sydney metropolitan area. While this figure is an under-count of total moves (many households may have moved more than once, and those moving into the city from elsewhere are not presented), mapping this...
Business Angle: Where Have All the Mentors Gone?
For the past two years, my travels have taken me to numerous places across the country to speak with great surveyors. I’m always listening to their complaints (many), opinions (also many), and positive comments (not as many) on our profession. From all those comments, I’m addressing here the apparent lack of mentors and training that...
Where Theory Meets Practice: Geodetic Observations – Part 2
Part 1 of this article (March 2014) presents the differences between azimuths that surveyors observe with a total station and the geodetic azimuths listed in GNSS adjustment reports. However, the effect on angles caused by the deflection of the vertical at the observing station is typically small. Thus, the difference between the observed astronomic angle and...
Education in Surveying: Improving the Geospatial Learning Experience: GeoLearn
GeoLearn is an online education company founded in 2013 and designed to improve the learning experience for busy professionals and technicians in the geospatial professions. Joe Paiva, PhD, PS, PE, a long-time geospatial industry educator, and Robert Morris are principals of this start-up educational company. The company’s initial slate of professional development courses, announced at launch...
Feature: Preparing to Fly
An industry insider provides an overview of the advantages of using UAS for surveying as well as common misconceptions, plus preparation steps for surveyors and firms.Unmanned aircraft systems (UAS) represent a culmination of advancements in miniaturization, electronics, optics, batteries, and data-processing techniques. After being widely used in military and security operations for the past 10...
Where Theory Meets Practice: Transformations and Reference Frames, Part 2
In the previous article (PSM Dec. 2013), I mention the practical problems of control being in different reference frames, and I present the surveying solution to this problem. In this article I address how to determine if the localization process was successful. To do this we will need to look at the statistics of the...
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