| 摘要 |
<p>The present invention relates to a system to cancel a high frequency noise in which noises having various frequencies, high signal strength and a wide range of fluctuation for a frequency and a phase, and the like are generated with a large output, in an environment such as a field of construction work, a factory and an airport runway. A system to cancel various high frequency noises generated in a surrounding environment comprises: a transceiver unit (10) to receive a generated noise signal, and to transmit a cancelling signal for removing the noise signal; a signal analyzing unit (20) having a digital radio frequency memory (DRFM) (21), and digitalizing and analyzing the received noise signal; a canceling signal generating unit (30) to generate a canceling signal for canceling the noise signal; a controller (50) to control the operation of a signal analyzing unit (20) according to receipt of the noise signal, and to control the canceling signal generating unit (30) based on analysis data of the noise signal received from the signal analyzing unit (20). Therefore, noises can be effectively reduced in an environment in which noises having various frequencies and large output are generated.</p> |
