FM RADAR GOES UNDERGROUND

Southwest Research Institute engineers have developed a prototype VHF/UHF radar system for probing and inspecting subway tunnels built up to a century ago. Among other technologies, the FM radar technique showed the greatest potential for assessing brick-lined tunnels and locating voids under concrete slabs. Field tests have been conducted for Port Authority Trans-Hudson and New York City Transit Authority. Ultimately to be developed is a rail-mounted system capable of rapid surveys and monitoring the structural condition of tunnels on a periodic basis.

• Corporate Authors:

  Southwest Research Institute

  Department of Communications, P.O. Drawer 28510
  San Antonio, TX  United States  78284
• Publication Date: 1985-6

Media Info

• Pagination: p. 16-18
• Serial:
  • Technology Today
  • Volume: 6
  • Issue Number: 2
  • Publisher: Southwest Research Institute

Subject/Index Terms

• TRT Terms: Brick construction; Inspection; Maintenance; Radar; Structural analysis; Subways; Tunnel lining; Tunnels
• Identifier Terms: New York City Transit Authority; Port Authority Trans-Hudson Corporation
• Uncontrolled Terms: Structural adequacy
• Old TRIS Terms: Tunnel maintenance
• Subject Areas: Bridges and other structures; Maintenance and Preservation; Public Transportation;

Filing Info

• Accession Number: 00399793
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 31 1985 12:00AM