Concept
Chirp
| URI | http://vocab.nerc.ac.uk/collection/L05/current/CHRP/1/ | |
|---|---|---|
| Within Vocab | SeaDataNet device categories | |
| Alternative Labels | ||
| Definition | Chirp systems emit a 'swept-frequency signal', meaning that the transmitted signal is emitted over a period of time and over a set range of frequencies. This repeatable (transmitted) waveform can be varied in terms of pulse length, frequency bandwidth, and phase/amplitude. A matched filter, or correlation process, collapses the swept frequency modulated (FM) received signal into a pulse of short duration, maximizing the signal-to-noise-ratio. The reflected signal is received by a tuned transducer array that generates the outgoing acoustic energy. Chirps operate within a range of 400Hz - 24 kHz and are used for the first 20-30 metres of unconsolidated sediments. | |
| Date | None | |
| Identifier | CHRP | |
| Note | accepted | |
| Is Version Of | CHRP | |
| version | 1 | |
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