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Frequency tracked gated pulse technique for ultrasonic frequency
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1983 |
| Description | A tracking generator 21 is slaved to a spectrum analyzer 23 to produce an input signal having a frequency that follows the frequency of the spectrum analyzer sweeping local oscillator 22. The input signal is gated to a transducer 26 by a transmitter gate 25 to produce ultrasonic waves in the sample 28. The resulting ultrasonic echoes are converted into electrical signals by the transducer and then gated into the spectrum analyzer by receiver gate 29. This arrangement produces spectra that are equivalent to shock-exciting the transducer with a true delta function shock-excitation. |
| File Size | 733626 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080005880 |
| Archival Resource Key | ark:/13960/t7sn51c2m |
| Language | English |
| Publisher Date | 1983-07-05 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Pulse Generators Patents Frequency Distribution Frequencies Spectrum Analysis Oscillators Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
