Accession Number : ADD014415

Title :   Radiosonde.

Descriptive Note : Patent, Filed 7 Apr 81, patented 24 Apr 84,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Rosenthal, David A

Report Date : 24 Apr 1984

Pagination or Media Count : 6

Abstract : This abstract discloses an apparatus and method of measuring elevation of vehicles, such as radiosondes, aircraft, or re-entry vehicles, is provided by identifying the specific geographic location of the vehicle in question and its difference from the geographic location of a reference station. The reference station altitude is then used as an arbitrary level to measure differences in elevation of the vehicle in question. The present method involves vehicles equipped with onboard global navigational equipment. Currently world wide networks such as Omega and Loran permit ships to determine their geographic location at any given time. For purposes of the present invention, the phrase 'geographic location' refers to the latitude and longitude of the object to be located and does not include the elevation of the object. The object of undetermined elevation can be a radiosonde used to gather information prior to reentry of missile from above the atmosphere or it could be equipment on a re-entry vehicle itself. It is also possible with present electronics to design systems using the present invention to locate aircraft altitude with respect to known reference stations. Patents. (AW)

Descriptors :   *ALTIMETERS, *PATENTS, *RADIOSONDES, AIRCRAFT EQUIPMENT, ALTITUDE, ELECTRONIC EQUIPMENT, ELEVATION, GUIDED MISSILES, LATITUDE, LONGITUDE, LORAN, MEASUREMENT, NAVIGATIONAL AIDS, ONBOARD, PHRASE STRUCTURE GRAMMARS, POSITION(LOCATION), REENTRY VEHICLES

Subject Categories : Navigation and Guidance
      Target Direction, Range and Position Finding

Distribution Statement : APPROVED FOR PUBLIC RELEASE