Cavity detection and delineation research. Report 5: Electromagnetic (Radar) techniques applied to cavity detection
Abstract
This study evaluated four different radar systems to determine their effectiveness in locating subterranean cavities. Tests were conducted at three well-documented sites: Vicksburg, Miss.; Medford Cave, Fla. (near Ocala); and Manatee Springs, Fla. (near Chiefland). None of the radar systems was effective at the Vicksburg, Miss., site because of extremely high conductivities encountered in the overburden materials which were comprised primarily of silts (loess) and clays. The following radar systems were used in this study: (a) A pulsed system fabricated and operated by personnel from Texas A/M University; (b) A pulsed system commercially manufactured by GSSI operated by the owners, Technos, Inc.; (c) A pulsed system developed, fabricated, and operated by personnel from SwRI; and (d) A continuous wave system development, fabricated and operated by personnel from LLNL.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1983
- Bibcode:
- 1983STIN...8414407B
- Keywords:
-
- Caves;
- Cavities;
- Detection;
- Pulse Radar;
- Dielectrics;
- Electrical Resistivity;
- Moisture;
- Radar Antennas;
- Radar Range;
- Radar Targets;
- Rocks;
- Sediments;
- Surveys;
- Very High Frequencies;
- Communications and Radar