Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1976-10-15
1978-01-24
Hubler, Malcolm F.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
364453, G01C 2118, G01S 944
Patent
active
040706745
ABSTRACT:
A doppler radar/inertial system is provided for producing navigational and fire control information for an aircraft, and which includes means for developing vertical reference signals accurately at one location and for then transferring the signals to a second location without incurring errors due to aircraft flexure. The system includes high quality accelerometers and gyroscopes mounted at one location in the aircraft for developing accurate vertical reference signals; and a high quality accelerometer and low cost gyroscope at a second location where accurate vertical reference information is required. The system includes circuitry for comparing the output of the high quality accelerometer at the second location with the accelerometer outputs at the first location, the difference of which is a function of the error in the vertical reference at the second location, as indicated by the low cost gyroscope. The system includes further circuitry which is responsive to the output differential of the accelerometers to correct the error in the reading of the low cost gyroscope at the second location.
REFERENCES:
patent: 3131390 (1964-04-01), Condie et al.
patent: 3167763 (1965-01-01), Barkalow et al.
patent: 3414899 (1968-12-01), Buell
patent: 3430239 (1969-02-01), Buell et al.
patent: 3432856 (1969-03-01), Buell et al.
Buell Heinz
Fiore John M.
Hubler Malcolm F.
Kennedy T. W.
The Singer Company
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