RF Telemetry from a High Speed Subterrain

International Telemetering Conference Proceedings / October 08-11, 1968 / Ambassador Hotel, Los Angeles, CaliforniaThe telemetry of the deceleration loading upon a vehicle which deeply penetrates the earth at high speeds is described. The technique consists of using a single-channel, narrow-band FM transmitter to drive a magnetic dipole so that RF communication with above-ground receivers is provided. A 260-kHz, 340-watt system with a 2-kHz bandwidth is described along with design considerations. The reduction of the conductivity along the signal path by the penetration tunnel with consequent signal enhancement is discussed.International Foundation for TelemeteringProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection