Accession Number : ADA112311

Title :   Effects of High Voltage Transmission Lines on Non-Directional Beacon Performance.

Descriptive Note : Final rept. Jun 80-Oct 81,


Personal Author(s) : Ibrahim,Ismail ; Luebbers,Raymond

PDF Url : ADA112311

Report Date : Oct 1981

Pagination or Media Count : 184

Abstract : The potential for high-voltage transmission lines to interfere with the operation of non-directional beacons through the mechanisms of coronagenerated radio noise or passive reradiation of the desired signal has been assessed by use of computer prediction models. The generated noise levels were calculated for both AC and DC lines using methods found in the appropriate literature which have previously been compared with measured data. The reradiated signal levels were computed using a moment-method wire model computer program. This approach was validated by measurements made and reported herein. For all situations considered, it was concluded that locating an NDB near a high-voltage transmission line should not impair the function of the NDB due to either corona noise or passive reradiation from the line.

Descriptors :   *Beacons, *Transmission lines, *Electrical corona, High voltage, Level(Quantity), Computerized simulation, Fortran, Validation, Operation, Measurement, Directional, Noise, Predictions

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE