Patent ID: 9404810
Filing Date: 2016-08-02
CPC Classification: G01K,G06K

Claim Text:
1. A surface acoustic wave sensor system for use with a moving platform, comprising: an interrogator for producing an RF interrogating signal; a first antenna for transmitting the RF interrogating signal; a substrate attached to the moving platform for supporting surface acoustic waves; an interdigital transducer mounted on the substrate for producing incident surface acoustic waves responsive to the RF interrogating signal; a reflector mounted on the substrate for producing reflected surface acoustic waves responsive to the incident surface acoustic waves, the reflected surface acoustic waves responsive to a characteristic of the moving platform; and a position indicator for producing a synchronization signal input to the interrogator for triggering the RF interrogating signal, the synchronization signal timed to trigger the RF interrogating signal when the interdigital transducer is within a field-of-view of the first antenna.