Central To Everything and Close to Nothing | Talk about apples and oranges, and maybe bananas too....... Before anyone makes any wild claims about accuracy, you had better make sure you know what you are talking about and read the fine print in the advertising. In the guidance market, most rated accuracies are quoted on a pass to pass in a certain time period a certain percentage of the time. In the case of Deere and Trimble, their rated accuracy is based on a 15 minute interval 95% of the time. Are they more accurate than the rated accuracy? Most of the time, yes, but they can drift within their rated accuracy. Is a Trimble running WAAS more accurate than a JD StarFire iTC running SF1, proably not, I think Trimble is making a stronger statement with their rated accuracy. In theory, someone selling a WAAS like product could claim a +/-1" accuracy only to have the fine print say based on a 5 minute interval, 10% of the time!!
Unfortunately, like Peth's comments, there is no standardized body out there to rate the accuracies of these products and until then the buyer will have to decide on their own which company claim to believe. If you aren't sure, contact a local dealer who will give you a demo and find out for yourself. Any precision ag dealer worth their salt will be out there in a heartbeat to show off their wares.
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SF1 vs. Waas
