Global Positioning System and Television Signals: Are the Two Compatible

摘要

In November 1991, the Phillips Laboratory (PL), Geophysics Directorate, incooperation with Purdue University, conducted a Global Positioning System (GPS) survey near Inverness, MS. The survey was carried out around the 610 m WABG-TV transmitting tower. The data were used in the on going program by PL to study possible departures from Newtonian gravity. Data were collected within an 8 km radius of the tower. Inside of 2 km, half of the six GPS receivers were unable to lock onto incoming GPS signals. We believe that some form of tower transmissions, possibly microwave, interfered with the signal transmitted by the GPS satellites.