Description of improved form of radio altimeter which can serve number of purposes; problem of finding means for detecting phase of reflected wave in relation to transmitted wave; practical application in measuring distance reflected wave has traveled when it returns to antenna; application of beat frequency; further possibilities; indications for landing. Paper presented before Nat. Acad. of Sciences.
Height of airplane above ground by radio echo
Aviation Eng
Aviation Engineering ; 1 , n 3
1928
2 pages
3 Figs.
Aufsatz (Zeitschrift)
Englisch
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