Coded navigation system

Details Coded navigation system Coded navigation system

1974-04-03

1976-02-17

Atkinson, Charles E.

Communications: electrical

Digital comparator systems

3401461AL, 343 171R, G06F 1100, G01S 116

Patent

active

039394727

ABSTRACT:
In a navigation system in which a beam of radiation is utilized for communicating information to a vehicle, such as an aircraft approaching a landing strip, there is provided a pseudo-noise generated binary code having sequentially generated bits ordered in a sequence of nonrepeating subsequences with each of these bits uniquely representing a value of a coordinate describing the position of the beam of radiation. For example, with an azimuthally scanned beam of radiation, each bit in the code represents an increment in the azimuth angle while the digits of one of the subsequences is sufficient to uniquely determine the azimuth angle. An encoder and a decoder, each similarly structured with a shift register and feedback logic, are disclosed.

REFERENCES:
patent: 3411135 (1968-11-01), Watts
patent: 3544963 (1970-12-01), Tong
patent: 3811108 (1974-05-01), Howell
patent: 3851251 (1974-11-01), Wigner et al.

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