2490050

Information

• Patent Grant
• 2490050

• References
• Source

• Patent Number

  2,490,050

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1949
  75 years ago

• CPC

  • 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

• US Classifications

  • 342 - Communications: directive radio wave systems and devices