Process for increasing the range and particularly the protection

Details Process for increasing the range and particularly the protection Process for increasing the range and particularly the protection

1984-06-19

1986-10-14

Blum, Theodore M.

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

Directive

Beacon or receiver

G01S 118

Patent

active

046175695

ABSTRACT:
A process and means for increasing the range and the protection against jamming of a MLS system. It consists of transmitting a supplementary or reinforced preamble for each MLS function or group of MLS functions, via a scanning antenna used for the azimuth function, during the time when the latter is not normally used. This supplementary preamble consists of a certain number, e.g. four preferably accelerated scans, the variation between these scans being characteristic of the following function or functions.

REFERENCES:
patent: 3715757 (1973-02-01), Toman
patent: 4306238 (1981-12-01), Enein
patent: 4306239 (1981-12-01), Enein
patent: 4333081 (1982-06-01), Hofgen
patent: 4489326 (1984-12-01), Studenny
patent: 4532517 (1985-07-01), LaBerge et al.
Onodera et al., "Development of Approach Elevation Equipment in MLS," NEC Research and Development, No. 59, Oct. 1980, pp. 34-45.
Letoquart et al., "Le MLS-Un Exemple d'Utilisation du Microprocesseur," Navigation, vol. 29, No. 114, Apr. 1981, pp. 174-187.

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