Coordination transformation by zoning method for parameters computing between WGS84 and North Sahara
Kheloufi, Noureddine
The global transforms model (bursa -wolf , molodensky-badekas) are the famous method used to cmpute parameter tansformation between geodetic systems. In our case , for a huge territory like algeria , these model are not most appropriate to give a good accuracies over these parameters, because informatuion about local geoid over ellipsoid clarke 1880 is not available. but the two dimension models such as geodetic lines , multiple refression ,..., have given best results applied over the algerian area. Thatts why we are hold to use a new method to compute the tansform parameters with good accuracies, this method is called zonagee and it concist to delimitate our territory to little zone in order to apply three dimension models (bursa- wolf, molodensky-badekas) , in this case we can avoid great geoid undulation wich generate errors on computation of patrameters and give thus a bad accuracy. These parameters while computed, could be used to transform a new point over all the zone, the results are validating by a computation programm called TRANSFOR.
Event: XXIII International FIG Congress : Shaping the change
Only personal, non-commercial use of this document is allowed.