| 摘要 |
Device for removal of strong narrow-band noise in receivers of natural electromagnetic radiation of Earth includes receiver, antenna, switch, adaptive-rejecter filter, amplifier and end device. After first active elements of receiver for weak signal or after antenna, though before active elements of receiver for strong signal multi-channel; with parallel channels adaptive-rejecter filter with common input is included. Each channel of adaptive-rejecter filter has connected in sequence narrow band filter, key circuit and its input of addition circuit. Output of narrow-band filter is connected in series through amplitude detector, circuit of controlled threshold and inverter to control input of key circuit. |
