TY  - THES
A1  - Helm, Achim
T1  - Ground-based GPS altimetry with the L1 OpenGPS receiver using carrier phase delay observations of reflected GPS signals
Y1  - 2008
DO  - 10.23689/fidgeo-488
PB  - GFZ
CY  - Helmholtz-Zentrum, Potsdam
UR  - http://hdl.handle.net/11858/00-1735-0000-0001-3278-C
ER  -