[excuse-me]

GPS is commodity now, Trimble are looking to add value

It's hard to sell a $500 ruggadised GPS unit when it's built into someones iPhone, and people are beginning to wonder why they are paying quite so much even for RTK systems when the actual HW is so cheap.

But if even small scale housing construction started could be persuaded to use the same 3D mapping/GPS technology that big civil engineering projects do then you could tie up a nice market.

From the prospective concept design of the street of houses, the planning permission filings with 3D height modelling, sight lines, light rights, the cad drawings, then the automated layout of roads and foundations with GPS equipped machines - all with an integrated Trimble system.

[jpastika]

Actually, Trimble's focus is not on consumer GPS, it is on machine control (heavy equipment GPS guidance), survey, and build construction. I'm familiar with the machine control hardware through my involvement with a Trimble distributor. The accuracy, especially vertical, achieved through Trimble's machine control is incredible. However, that accuracy is only achieved through the use of a static "base" and mobile (attached to machinery i.e. bulldozer) "rovers".

I do agree that the technology has become much cheaper over the last 10 years, while Trimble's pricing has not fallen at the same rate.

[sundae79]

Didn't know your iphone gps was accurate at millimeter level just like the $500 trimble GPS which is used for precision.

[excuse-me]

A $500 Trimble is still the same 12channel + WAAS unit you have in your phone or buy in a sports store.

A Real Time Kinematic system can do mm (on a good day with a following wind) but they cost 20x as much!

My post wasn't totally clear - I meant people ALSO wonder why an RTK is $10,000 when you can build your own for a lot less (http://blog.makezine.com/2009/11/12/diy-real-time-kinematic-...)