| 摘要 |
FIELD: information technology. ^ SUBSTANCE: invention is meant to facilitate electromagnetic compatibility of radioelectronic equipment (RE) of a short-range radiotechnical navigation system (SRRN) and a mobile radio communication system (MRS) operating in coinciding frequency bands. For each working channel of an onboard SRRN receiver of an aircraft, the interference environment created by base and user stations of the MRS is successively analysed based on mobility of the RE, as well as range of changes in flight altitude, distance of the aircraft from ground-based beacons and MRS RE and coordinates of "control" points (CP) in which the effect of MRS RE on the onboard SRRN receiver is maximum; for those "control" points in which the signal-to-noise ratio in the onboard SRRN receiver is less than the value of the protective ratio of the receiver, the frequency separation öfCP between the frequency-code channel FSRRN/LRBG (FSRRN/LRBG is the operating frequency of the radio beacon of the system SRRN/LRBG, where SRRN is the short-range radiotechnical navigation system, LRBG is the landing radio beacon group) of the short-range radiotechnical navigation system and frequencies of the MRS base stations is determined; for frequency channels of base stations falling in the frequency interval FSRRN/LRBGöfCP, the highest equivalent isotropically radiated power for which there is non-interference operation of the onboard SRRN receiver is determined. ^ EFFECT: facilitating electromagnetic compatibility of the MRS ME with onboard SRRN, increase in overall volume of the radio-frequency spectrum available for a mobile radio communication system. |
