Accession Number : AD0780380

Title :   Investigation of the Reflected Radar-Beacon Reply Problem at the North Platte, Nebraska, en Route Radar Site.

Descriptive Note : Interim rept. Jun-Dec 72,

Corporate Author : NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J

Personal Author(s) : Spingler,George F.

Report Date : APR 1974

Pagination or Media Count : 70

Abstract : An investigation was made to determine the cause of a split radar-beacon reply problem that existed in the system. It was concluded from this investigation that the terrain in the vicinity of the North Platte facility together with the radar beacon directional antenna that was installed at the facility were responsible for the split radar-beacon reply problem. An improved radar beacon directional antenna, that utilized the ARSR-2 radar reflector, was designed, fabricated and tested at NAFEC to reduce beacon radiations below the horizon. This antenna was afterward installed and tested at the North Platte facility. The results of the testing at the North Platte facility showed that the new antenna design had eliminated the split radar-beacon reply problem. From the results of the testing at North Platte, it was concluded that this antenna could be used at other en route radar facilities to eliminate existing propagation problems. (Modified author abstract)

Descriptors :   *Radar beacons, *Air traffic control systems, Radar antennas, Modification, Terrain, Reflectance, Nebraska

Subject Categories : Air Navigation and Guidance
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE