Aeronautics and astronautics – Missile stabilization or trajectory control – Remote control
Patent
1957-01-22
1979-02-13
Engle, Samuel W.
Aeronautics and astronautics
Missile stabilization or trajectory control
Remote control
325 42, 325476, 325323, 364439, 364440, 364494, 364819, F41g 718, F41g 900, H04b 110
Patent
active
041391705
ABSTRACT:
10. A method for use in controlling the travel of a vehicle comprising the steps of first deriving two narrow band noise signals of different frequencies, then delaying one of said signals by an amount which constitutes the information which will control the path of the vehicle, next adding the delayed and undelayed signals to form a composite signal, subsequently transmitting the composite signal to a receiver in the vehicle, then applying the composite signal to a non-linear device in said receiver along with a duplicate waveform of itself which has been delayed in time, subsequently deriving from the non-linear operation through the step of filtering a signal at the difference frequency between the two original noise signals, which signal is a function of the correlation between said composite signal and its delayed duplicate waveform, and lastly applying said difference frequency signal to a non-linear device to generate control signals which are proportional to said correlation.
11. A method for use in controlling the travel of a vehicle comprising the steps of first deriving from a common narrow band noise source, two noise signals of difference frequencies, then delaying one of said signals by an amount which constitutes the information which will control the path of the vehicle, next adding the delayed and undelayed signals to form a composite signal, subsequently transmitting the composite signal to a receiver in the vehicle, then applying the composite signal to a non-linear device in said receiver along with a duplicate waveform of itself which has been delayed in time, subsequently deriving from the non-linear operation a signal at the difference frequency between the two original noise signals, which signal is a function of the correlation between said composite signal and its delayed duplicate waveform, said correlation indicating the information controlling the path of the vehicle, and lastly applying said signal to a detector and relay in order to control the power that is used to move the controls of the vehicle.
REFERENCES:
patent: 2801351 (1957-07-01), Calvert
patent: 3428794 (1969-02-01), Norsworthy
patent: 3450869 (1969-06-01), Wiley et al.
Chin Gay
Engle Samuel W.
Martin Marietta Corporation
Renfro Julian C.
Webb Thomas H.
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