机译:Tests of reception of the combination of GPS and GLONASS signals under and above forest canopy in the Black Forest, Germany, using choke ring antennas
Network INGenieurgesellschaft mbH, Halle (Saale), Germany;
Forest Research Institute Baden-Wuerttemberg, Freiburg, Germany;
Ingenieurbuero Dr. Foeller & Partner, Straubenhardt, Germany;