Evaluated SNR for the alternate transmission of different chirp ultrasound to extend the measurable distance in the pulse-echo method
| Autor: | Khanistha Leetang, Hiroyuki Hachiya, Shinnosuke Hirata |
|---|---|
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Japanese Journal of Applied Physics. |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.35848/1347-4065/acd6c8 |
| Popis: | The basic concept of distance measurement using the alternate transmission of two different codes based on the pulse-echo method has been used to obtain an extension of the measurable distance, in which the temporal resolution is not degraded in the one-code transmission. The reflected signals from the object are measured by two correlation signals. The received signal is correlated with each transmitted signal. The truncation and truncated interference noise of signals is generated in the cross-correlation function. Which is a part of signal components. The signal components are changed according to the transmit signal. In this paper, the SNRs of alternate transmission of different chirp signals is described and investigated. The highest SNR is achieved by the high bandwidth and long length of the transmitted signal. Different bandwidth of the chirp transmission is simulated. SNRs of the proposed method between the experiment and simulation is compare. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|