Dual continuous wave carrier signals distance measuring system

Details Dual continuous wave carrier signals distance measuring system Dual continuous wave carrier signals distance measuring system

G - Physics

01

S

343/85

G01S 5/02 (2006.01)

Patent

CA 1155531

-47- ABSTRACT OF THE DISCLOSURE A radio frequency distance measuring system and method employs at least one pair of continuous wave carrier signals having a preselected frequency separation equal to a desired difference frequency. The pair of continuous wave carrier signals are generated at the transmitting station by transmitters (2, 3), in accordance with a reference signal from a frequency standard (4), and are radiated by an an- tenna (1) to the receiving station at the unknown point. The receiver (6) at the receiving station mixes the received pair of continuous wave carrier signals to produce a difference frequency signal which is phase compared in a phase meter (8) with a locally generated difference frequency signal from circuit (11). The phase difference is proportional to the distance from the transmitting station to the receiving station. More than one transmitting station is employed to provide position information.

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