Using GPS in farming is All Right
I’ve been reading The Walrus magazine a lot lately since I got a digital subscription for my iPad. I won’t go into detail about the magazines themselves but for those who aren’t familiar with it they off a broad spectrum of stories from the local and person to the strange and insightful.
Something that caught my eye the other day while reading an article on farming in Canada was how elegantly the author describes how GPS works.
It was full dark now, and the field beyond the tractor’s headlights was a rumour. No matter: the action was all on a small GPS screen mounted to the right of the steering wheel…
…When I asked how it all worked, he tapped the GPS, flipping over to a screen that traced the data stream guiding us. Multiple satellites spun within range in the stratosphere high above us, and they traded information with the tractor’s GPS through a receiver in the main farmyard. A radio antenna on the tractor’s roof received minute corrections to the vehicle’s trajectory, based on triangulations calculated between the various satellites.
(via [“The Farms Are Not All Right” by Chris Turner | The Walrus | October 2011]
This obviously caught my eye because of my education in that particular field, but to accurately describe how RTK-GPS (Real Time Kinematic GPS) and not alienate the general audience was great. To those who understood what was being described, it showed respect for the reading audience. To those who know only know of GPS as a “black box device”, they weren’t confused by technical words or complex descriptions.
