Solution to the Problem of Civil Aviation VHF Band Radio Frequency Interference by Using Flight Inspection Aircraft
Lening Wang, Xitong Song, Jianyu Wang, and Shuming Liu, Flight Inspection Center of CAAC, China
Location: Regency Ballroom
Date/Time: Tuesday, Apr. 17, 8:30 a.m.
With the sustained and rapid development of Chinese economy, more and more new TV stations and radio stations have been built. Due to some equipment or man-made reasons, some radiation signals from broadcasting stations has been spread into civil aviation communication and navigation bands, which results in seriously affects on the operation safety of civil aviation. In order to monitor the air radio environment and locate the possible interference source, two calibration aircrafts with the ability of radio frequency interference (RFI) monitoring has been introduced into the Flight Inspection Center of CAAC (CFIC) to carry out a number of monitoring tasks.
In this paper, the RFI monitoring system and usually direction finding (DF) method utilized by the Flight Inspection Center of CAAC is introduced in more details. Additionally, the activities and results on the radio interference monitoring are reviewed. In order to improve the accuracy of orientation and position of interference sources, the CFIC has made some endeavor to testify the orientation error and the corresponding compensation, which shows very good results.