Premium
The use of infra‐red light and closed circuit TV to validate records from automatic fish counters *
Author(s) -
Beach M. H.
Publication year - 1978
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1978.tb03478.x
Subject(s) - fish <actinopterygii> , closed circuit , red light , biology , infrared , radiation , wavelength , optics , remote sensing , fishery , computer science , telecommunications , physics , botany , geology
Infra‐red light was used to provide ‘dark’ illumination for a TV surveillance system to check the performance of an automatic migratory fish counter. The transmission characteristics of water and infra‐red filters was examined together with the response of TV camera tubes and fish to radiation at infra‐red wavelengths.