Low-Cost, High-Performance, VLF Receiver Front-End

摘要

A VLF receiver front-end was designed using standard linear integrated circuits. The basic methods were evaluated extensively on the Omega 10.2 KHz channel but are readily adaptable to any other VLF frequency in the 10.2 KHz to 20 KHz region. Applications for the modules exist in position location, time-frequency measurements, and signal propagation. The set provides control gates, zero crossing signals, and analog outputs to interface with any type of digital logic, microprocessor, or analog signal processor. (Author)