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EVM430-FR6047: Differential ToF estimation using cross-correlation

Part Number: EVM430-FR6047
Other Parts Discussed in Thread: TIDM-1019

Hello,

I have found information about the cross-correlation method for determining the differential time of flight used in the EVM430-FR6047 demo in

TI Designs: TIDM-1019 Ultrasonic Sensing Subsystem Reference Design for Water Flow Measurement

www.ti.com/.../tidudn0.pdf

Page 8 & 9

as well as in

High precision & accurate sensing at lowest flow rate for metering applications

http://www.ti.com/lit/ml/swmp003/swmp003.pdf

Page 12 & 13

but the two write-ups seem to be conflicting in detail. Also the formatting of the first one is horrible. Because of this I have not yet understood what exactly is happening, so my question is: Is there a clean or more detailed write-up?

Thank you very much for your support.

Best regards

Daniel

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