AN OPTIMUM MULTISENSOR APPROACH FOR DETAILED ENGINEERING SOILS MAPPING

THE POTENTIAL OF AVAILABLE TYPES OF REMOTE SENSING SYSTEMS WAS INVESTIGATED FOR THE EVALUATION OF SOILS AND SOIL CONDITIONS TO DEVELOP AN OPTIMUM MULTISENSOR APPROACH FOR DETAILED ENGINEERING SOILS MAPPING. THE VALUE OF QUANTITATIVE MEASUREMENTS ON AERIAL PHOTOGRAPHY AND IMAGERY WERE INVESTIGATED FOR ASSISTANCE IN INTERPRETATION AND A LIMITED STUDY WAS CONDUCTED TO DETERMINE WHICH PARAMETERS WOULD BE OF VALUE TO MEASURE AT THE TIME OF FLIGHTS. THREE TEST SITES WERE SELECTED WHICH CONTAINED A VARIETY OF LAND FORMS AND SOIL UNITS. A TOTAL OF 9 FLIGHT PROGRAMS WERE OBTAINED OF THE TEST SITES. COVERAGE WAS OBTAINED WITH VARIOUS TYPES OF AERIAL FILMS /COLOR, COLOR-INFRARED, COLOR NEGATIVE, BLACK-AND-WHITE PANCHROMATIC AND BLACK-AND-WHITE INFRARED/, A MULTIBAND CAMERA, A RADAR SENSOR /K-BAND/, INFRARED SENSORS /FAR INFRARED/, AND A MULTICHANNEL SENSOR /ULTRAVIOLET THROUGH FAR INFRARED/. FIELD INVESTIGATIONS INCLUDED FIELD RADIOMETER READINGS, SOIL MOISTURE CONTENT MEASUREMENTS, AND RESISTIVITY SURVEYS. GROUND PHOTOGRAPHS AND METEOROLOGICAL DATA WERE OBTAINED DURING FLIGHTS. QUANTITATIVE ASPECTS OF THE PROJECT INCLUDED PERFORMING CONTINUOUS SCANS WITH REFLECTION AND TRANSMISSION DENSITOMETERS TO DETERMINE IF TYPICAL DENSITY PATTERNS EXISTED FOR VARIOUS LAND FORMS. DENSITOMETERS WERE USED TO PREPARE NORMALIZED RESPONSE CURVES FROM MULTICHANNEL DATA. DETERMINATION WAS MADE OF MUNSELL COLOR NOTATION ON AERIAL PHOTOGRAPHS BASED ON DENSITOMER READINGS WITH FOUR FILTERS. BASED ON THE COLOR MEASURING SYSTEM, A METHOD WAS DEVELOPED TO PREPARE ISOCHROMAL MAPS. THE OPTIMUM MULTISENSOR SYSTEM FOR DETAILED ENGINEERING SOILS MAPPING WAS CONCLUDED TO BE A MULTICHANNEL SENSOR. SPECTRAL RESPONSE CURVES OBTAINED BY NORMALIZING MULTICHANNEL DATA APPEAR TO HAVE GREAT POTENTIAL FOR DIFFERENTIATING BETWEEN VARIOUS SOILS CONDITIONS AUTOMATICALLY. FIELD MEASUREMENTS FOUND TO BE OF GREATEST VALUE IN EVALUATING THE PHOTOGRAPHY AND IMAGERY WERE FIELD RADIOMETER READINGS, GROUND PHOTOGRAPHS TAKEN AT THE TIME OF FLIGHT AND METEOROLOGICAL DATA.

  • Supplemental Notes:
    • Hpr-1/4/, C-6-32 U
  • Corporate Authors:

    Purdue University

    School of Aeronautics and Astronautics
    West Lafayette, IN  United States  47907
  • Authors:
    • Rib, H T
  • Publication Date: 0

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Filing Info

  • Accession Number: 00228620
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Aug 15 2004 2:08AM