Radio ranging, navigation, and location system with...

Details Radio ranging, navigation, and location system with... Radio ranging, navigation, and location system with...

G - Physics

01

S

343/87

G01S 1/24 (2006.01) G01S 5/10 (2006.01)

Patent

CA 1249873

ABSTRACT OF THE DISCLOSURE A radio ranging system has at least one receiver which receives pulses over a direct path and over a longer delayed path from each of two or more fixed repeater stations. From the reception times of pulses which have traveled over these paths at different travel times from the fixed stations, a computer calculates the hyperbolic distances separating the passive re- ceiver and the several fixed reference stations. By interchang- ing the roles of the various fixed stations, the computer com- pares the results of timing calculations of the same distances based on the different sets of data. From this comparison, the systematic timing errors of the system can be isolated and added or subtracted from the time measuring results, leaving differen- tial time measurements without systematic error.

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