Re: Differential GPS

Brendan Pratt schrieb:
> - by using the fixed value of the DGPS broadcast point, 
> accuracies improved substantially - the value dropped off
> the moment the dither factor was lifted - still usefull 
> under very bad weather conditions but otherwise 
> expensive and bulky woth no current value.... (a standard 
> GPS needs additional reciever hardware to pick up dgps 
> broadcasts).
> 
> Brendan

One of the uses of DGPS is in container terminals at harbours. The 
carrier vehicles that move the containers about are tracked with the 
help of their DGPS systems. This allows to keep track of the positions 
of all the containers on the terminal. To do this, the accuracy must be 
less than the width of a container (8 feet). 

Greetings