Title: Doppler perspective navigation system employing the comparisons with a reference source of signal phases received on an aircraft by a plurality of sensors

Abstract: A perspective display of a runway is obtained on an aircraft by transmitting signals from selected marker positions about the runway. A plurality of sensors are positioned on the aircraft with each sensor being compared to a reference frequency. The comparisons are made measuring the accumulated phase difference during a given time with these phase differences being equivalent to distances which are then fed to a computer and displayed as a perspective view.

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Inventors: Lammers, Uve H. W. (Chelmsford, MA, US)

Application Number: 471933
Filing Date: 1974-05-21
Publication_date: 1976-04-20
Assignee: The United States of America as represented by the Secretary of the Air (Washington, DC)
Primary Class(es): 342/411 340/952, 340/972, 345/427, 701/17
Other Classes:
US Patent Ref:

2226860	Dec, 1940	Greig	343/118.
2463095	Mar, 1949	Wight et al.	343/108.
3237195	Feb, 1966	Schiffman	343/112.
3503071	Mar, 1970	Earp	343/112.

Other Refs:
Primary Examiner: Wilbur, Maynard R.
Assistant Examiner: Buczinski, S. C.
Attorney: Rusz; Joseph E., Siegel; Julian L.