Untersuchung der erreichbaren Ortungsgenauigkeit mit dem Verfahren Differential-GPS (DGPS). T. 2

Under a pilot project with respect to the use of DGPS (Differential Global Positioning System) the suitability and operational requirements of DGPS for inland waterways in the Federal Republic of Germany were investigated. Particular attention was given to describing not only the accuracy limiting factors of pure satellite measurement, but also the influence of and conditions to be attached to real-time transmission. The investigations have shown that a DGPS with a positioning accuracy of 1-2 m is a location procedure that is fully operational and suitable for various locating tasks. Prerequisite to a direct operational capability in the locating mode is that a functional and approved data transmission be found. If for a locating task the locating accuracy of 1-2 m is fully sufficient and it is sure that even in the future there will be no increased requirements, then a relatively cost-efficient single-frequency receiver is sufficient. If on internal waterways a future altitude measurement accuracy of Class I quality is desired for DGPS, either investment should be made in the expensive dual-frequency technology or a simple receiver should be used as a make-shift solution. If further development of the system provides an altitude measurement accuracy of few centimeters, a DGPS would be suitable for any locating purpose in terms of accuracy. (orig./HM)Available from TIB Hannover: RN 4055(777) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman