TERRAIN ANALYSIS BY ELECTROMAGNETIC MEANS. REPORT NO 1' LABORATORY INVESTIGATIONS IN THE 0.76 TO 5.00 MICRON SPECTRAL REGION

TESTS WERE CONDUCTED TO DETERMINE THE CAPABILITIES OF ACTIVE ELECTROMAGNETIC SENSORS OPERATING IN THE 0.76 TO 5.00 -MICRON SPECTRAL REGION TO MEASURE TERRAIN CHARACTERISTICS AFFECTING TRAFFICABILITY OF SOILS. CONTROLLED TESTS WERE CONDUCTED UNDER LABORATORY CONDITIONS IN AN ATTEMPT TO CORRELATE THE EFFECTS OF SOIL COMPOSITION, MOISTURE CONTENT, AND DENSITY WITH THE QUANTITY OF INFRARED ENERGY REFLECTED FROM A SOIL SAMPLE. RESULTS OF THESE TESTS INDICATE THAT THE MOISTURE CONTENT AND COMPOSITION OF HOMOGENEOUS SOIL SPECIMENS CAN BE CHARACTERIZED BY ACTIVE INFRARED SENSORS UNDER CONTROLLED LABORATORY CONDITIONS. HOWEVER, SINCE INFRARED ENERGY IS REFLECTED BY INFINITESIMALLY THIN SURFACES OF MATERIALS, INFORMATION CONCERNING DENSITY AND SUBSURFACE PARAMETERS CANNOT BE DISCERNED. TECHNIQUES FOR PREDICTION OF SOIL PARAMETERS THROUGH THE USE OF MULTI- WAVELENGTH ANALYSIS ARE DISCUSSED. THESE TECHNIQUES INVOLVE COMPARISON OF THE REFLECTIVITY PROPERTIES, AT SIX WAVELENGTHS, OF AN UNKNOWN SOIL SAMPLE WITH THOSE OBTAINED FROM SAMPLES OF KNOWN CHARACTERISTICS. /AUTHOR/

• Corporate Authors:

  N/A

  ,   United States 
• Authors:
  • DAVIS, B R
  • Lipscomb, E B
  • Knight, S J
• Publication Date: 1965-10

Language

• English

Media Info

• Serial:
  • Waterways Exp Sta Tech Repts, Army Ce

Subject/Index Terms

• TRT Terms: Density; Electromagnetic waves; Infrared radiation; Laboratory tests; Measurement; Moisture content; Properties of materials; Soils; Terrain; Trafficability
• Uncontrolled Terms: Capacity; Parameters
• Old TRIS Terms: Control conditions; Soil composition; Wave mechanics
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00228873
• Record Type: Publication
• Report/Paper Numbers: No 3-693
• Files: TRIS
• Created Date: Aug 15 2004 1:47AM