Open AccessStudy the influence of intermodulation products on navigation signals
Author(s) -
Teodor Iliev,
Ivaylo Stoyanov,
Grigor Mihaylov,
Elena P. Ivanova
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1032/1/012013
Subject(s) - intermodulation , interference (communication) , broadcasting (networking) , communications system , computer science , telecommunications , range (aeronautics) , frequency modulation , modulation (music) , electronic engineering , radio navigation , radio frequency , engineering , acoustics , computer network , physics , aerospace engineering , global positioning system , bandwidth (computing) , channel (broadcasting) , amplifier
The work examines terrestrial radio broadcasting using frequency modulation (FM), which interferes with the ILS (Instrument Landing System), VOR (VHF Omnial Radio range) and VHF communications systems, which is a widespread problem among aircraft users. In the case of ground/air communication receivers, this interference problem involves disturbing of audio communications and distorted reception of signals from the RV range. In aircraft ILS locators and VOR receivers, the interference problem is associated with interference of audio communications and errors related to course deviation and flag modes of control. Interference in these navigation receivers is considered as a more serious problem than errors in course deviation or impaired communication, especially in the approach and landing phases.