a website collaboration between Science Service and the Smithsonian Institution

ca. 1959 - HIDAN method is an electronic ground speed and track sensing device

CALCULATING TRUE GROUND SPEED

E&MP 103.012

Radar - Doppler Effect

ca. 1959

RADIATION PATTERN OF DOPPLER NAVIGATION

Heart of the HIDAN method is an electronic ground speed and track sensing device employing two forward and two rear microwave beams radiating from the aircraft to the ground.

Thus the aircraft is in effect "walking" on four invisible spidery legs.

Electronic calculation of any difference between the two pairs of beams indicates true ground speed and any deviation from course.

Original Caption by Science Service
© GENERAL PRECISION EQUIPMENT - GPE CONTROLS, INC.

(Formerly Askania Regulator Company) Chicago, Illinois

Additional Information:

Publication 1959 - FOR AN AGE OF PRECISION with reference images

Fascinating achievements in high precision technology are changing our world today. This booklet describes some of the major contributions being made by the General Precision group of companies in these significant product areas ...

  • Missile - aircraft - marine systems, components, and simulators
  • Computers and data processing equipment
  • Heat exchangers, distilling and atomic reactor equipment
  • Motion picture and photographic equipment
  • Television systems and equipment
  • Industrial controls
28 pages 947KB - requires Adobe Acrobat Reader
Courtesy: librascopememories.com



National Museum of American History

Home

Search - Site Map - Subjects to Choose From - Numbering Format

Credits - Copyright - Comments