2907999

Information

• Patent Grant
• 2907999

• References
• Source

• Patent Number

  2,907,999

• Date Filed

  Not available

• Date Issued

  Tuesday, October 6, 1959
  65 years ago

• CPC

  • G01S13/84 - for distance determination by phase measurement
  • G01S1/30 - the synchronised signals being continuous waves or intermittent trains of continuous waves, the intermittency not being for the purpose of determining direction or position line and the transit times being compared by measuring the phase difference
  • G01S1/38 - using comparison of (1) the phase of the envelope of the change of frequency, due to Doppler effect, of the signal transmitted by an aerial moving, or appearing to move, in a cyclic path with (2) the phase of a reference signal, the frequency of this reference signal being synchronised with that of the cyclic movement, or apparent cyclic movement, of the aerial
  • G01S11/02 - using radio waves
  • G01S13/82 - wherein continuous-type signals are transmitted

• US Classifications

  • 342 - Communications: directive radio wave systems and devices