SURVEY SECURITY THROUGH PHOTOGRAMMETRY

IN VIEW OF THE MAGNITUDE OF THE PROJECTED NATIONAL HIGHWAY PROGRAM, IT IS BECOMING INCREASINGLY MORE IMPORTANT TO EXERCISE SOME SORT OF INFORMATIONAL SECURITY ON PROJECTED HIGHWAY ROUTING. IN SOME INSTANCES IT HAS BEEN NOTED THAT CONVENTIONAL SURVEY METHODS HAVE GENERATED SPECULATION TO THE EXTENT THAT THE PROJECTED HIGHWAY ROUTE WAS RENDERED ECONOMICALLY PROHIBITIVE BECAUSE OF COMMERICIAL ENCROACHMENT. TO INSULATE AGAINST SUCH SPECULATION, PHOTOGRAMMETRY AFFORDS AN IDEAL SOLUTION. EVEN WITH THE USE OF PHOTOGRAMMETRY, GROUND CONTROL PARTIES MAY ALERT THE MORE PERSISTENT SPECULATORS TO THE FACT THAT SOME SORT OF DEVELOPMENT IS ANTICIPATED, EVEN THOUGH THIS WORK DOES NOT OFFER MUCH INFORMATION AS TO SPECIFIC LOCATION. TO PRECLUDE THIS TYPE OF SPECULATION, AN ENGINEER AND ONE OR TWO ASSISTANTS CAN MAKE A RECONNAISSANCE OF THE AREA TO LOCATE PROPERTY CORNERS, SECTION CORNERS, OR EXISTING SURVEY MARKERS, FROM WHICH SUBDIVISIONS HAVE BEEN MADE. ON THE DAY AND THE APPROXIMATE HOUR OF THE FLIGHT TO OBTAIN LOW-LEVEL PHOTOGRAPHY, 2 MEN FAMILIAR WITH THE PROJECT CAN TARGET THE CONTROL CORNERS FOR EASY IDENTIFICATION AND REMOVE THE TARGETS AS SOON AS THE FLIGHT HAS BEEN ACCOMPLISHED. FROM THIS LOW-LEVEL PHOTOGRAPHY, ACCURATE PLANIMETRIC MAPS CAN BE DEVELOPED. FROM COUNTY RECORDS, DESCRIPTIONS OF PROPERTY TRACTS WITHIN THE AFFECTED AREA ARE OBTAINED. THROUGH STEREOSCOPIC STUDY OF THE PHOTOGRAPH, THE FINAL HIGHWAY ROUTING CAN THEN BE DETERMINED AND PROJECTED UPON THE COMPLETED MAP. LIKEWISE, THE RIGHT-OF-WAY REQUIREMENTS CAN BE ASCERTAINED AND COMPUTED IN THE MANNER AND ACCURACY REQUIRED BY LAW. /AUTHOR/

Media Info

  • Monograph Title: Photogrammetry - developments and applications: 1958
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00202704
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 16 1994 12:00AM