Horizon reference system for a rotating body

Details Horizon reference system for a rotating body Horizon reference system for a rotating body

1984-11-02

1989-11-07

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

342351, 364434, 244 320, 244 321, G01S 504, G01S 302

Patent

active

H00007102

ABSTRACT:
A horizon reference system has a plurality of microwave radiation sensors which are selectively connected by a controller to a superheterodyne receiver. The output signals of the receiver are processed in conjunction with antenna selection data to provide roll angle with reference to the horizon and roll angle rate data about any particular axis of the platform on which the sensors are mounted.

REFERENCES:
patent: 3230532 (1966-01-01), Whitney
patent: 3418478 (1968-12-01), Falbel
patent: 3696670 (1972-10-01), Collis
patent: 3706688 (1972-12-01), Bayle et al.
patent: 3725931 (1973-04-01), Moore
patent: 3777270 (1973-12-01), Hardy et al.
patent: 3897917 (1975-08-01), Johnson
patent: 4216928 (1980-08-01), Hooper et al.
Hatcher: "A Survey of Attitude Sensors for Spacecraft"; NASA SP-145, 1967.
Bremer: "Improvement of Scanning Radiometer Performance by Digital Refere Averaging"; IEEE TIM, vol. IM28, No. 1, Mar. 1979.

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