The Use and Calibration of Distance Measuring Equipment for Precise Mensuration of Dams. Revised

1979 ◽  
Author(s):  
Kenneth D. Robertson
Keyword(s):  
Measuring Equipment ◽  
Distance Measuring

scholarly journals Atmospheric limitations on electronic distance measuring equipment

1959 ◽  
Author(s):  
Moody C Jr Thompson ◽  
Harris B Janes ◽  
Frank E Freethey
Keyword(s):  
Measuring Equipment ◽  
Distance Measuring

Controlled (h/d) Let-down using Barometric Height and Radar Distance

1949 ◽  
Vol 2 (1) ◽  
pp. 43-48 ◽  
Author(s):  
J. G. Downes
Keyword(s):  
Measuring Equipment ◽  
Air Traffic ◽  
Fundamental Concept ◽  
Basic Method ◽  
Flight Tests ◽  
Smooth Path ◽  
Single Instrument ◽  
Further Development ◽  
Route Navigation ◽  
Distance Measuring

The method described provides glide-paths for climbing and descending aircraft by combining in a single instrument information from the barometric altimeter and radar distance measuring equipment. Preliminary flight tests have shown that the method provides a smooth path along which an aircraft can be flown within close limits, and is one that appears sufficiently promising to justify further development.Height separation has for years been a fundamental concept in the control of air traffic. It is the basic method of preventing collision during en-route navigation and in some holding procedures. The main reason for this is that a suitable instrument already exists in the form of the barometric altimeter, aninstrument which is intrinsically more accurate and reliable than any of the usual navigational aids.

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