Barometric altimeter with digital linearization

Details Barometric altimeter with digital linearization Barometric altimeter with digital linearization

1974-10-11

1976-05-18

Wise, Edward J.

Registers

Transfer mechanism

Traveling pawl

73384, G06F 1520, G01L 700

Patent

active

039581080

ABSTRACT:
This invention discloses apparatus to obtain altitude measurement in digital value by linearizing the relation between the actual altitude and the output signal of a pressure sensor, by means of a digital function generator. An accurate measurement is made possible under the standard atmosphere, adopted by International Civil Aviation Organization (ICAO), where the relations between the altitude, static pressure and temperature are given. The digital function generator of the invention generates a function represented by a polynomial in the form of a power series of a variable. Because of the versatility of the above function, a variety of pressure sensors having different response characteristics may be used for this invention.

REFERENCES:
patent: 2745278 (1956-05-01), Roberts et al.
patent: 3242736 (1966-03-01), Winter et al.
patent: 3693405 (1972-09-01), Shimomura
patent: 3726138 (1973-04-01), Kosakowski et al.
patent: 3729999 (1973-05-01), Shimomura

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