| US 7,460,012 B2 | ||
| Method and system for synchronizing geographically distributed RF sensors using a pair of RF triggering devices | ||
| Mutsuya Ii, Shoreline, Wash. (US) | ||
| Assigned to Agilent Technologies, Inc., Santa Clara, Calif. (US) | ||
| Filed on Jan. 31, 2006, as Appl. No. 11/344,882. | ||
| Prior Publication US 2007/0178842 A1, Aug. 02, 2007 | ||
| Int. Cl. H04Q 7/00 (2006.01) | ||
| U.S. Cl. 340—539.1 [340/539.2; 340/3.1; 340/3.5; 340/3.2; 368/47; 702/176; 702/177; 702/178] | 17 Claims |
| 1. A method for synchronizing first and second geographically distributed RF sensors, the method comprising:
operating the first and second sensors to acquire and store RF data from a source external to said first and second sensors;
operating the first sensor to generate a trigger signal in response to detecting a feature of interest in the RF data acquired
by the first sensor;
operating the first sensor to wirelessly transmit the trigger signal;
operating the second sensor to wirelessly receive the trigger signal; and
operating the second sensor to read stored RF data based on a time offset associated with a time difference between the first
sensor generating the trigger signal and the second sensor receiving the trigger signal;
wherein said stored RF data is stored for a period of time longer than said time offset.
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