Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1982-09-13
1986-02-04
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5LS, G01S 116, G01S 118
Patent
active
045689423
ABSTRACT:
The invention relates to a microwave landing system or MLS in which the bearing station and elevation station are geographically separated by a distance which can be several kilometers. Each of the elevation and bearing stations transmits a message constituted by a preamble identifying the nature of the following angular message. According to the invention, one of these stations is made the master station and the other becomes the slave station. Thus, one station, i.e. the master station transmits the preambles of both messages, the slave station now only transmitting its specific angular information.
REFERENCES:
patent: 3775766 (1973-11-01), Gendreu et al.
patent: 4454510 (1984-06-01), Crow
B. Letocquart, "The MLS in France", Microwave Journal, vol. 24, No. 5, (1981), p. 113.
G. Onodera et al., "Development of Approach Elevation Equipment in MLS", NEC Research and Development, No. 59, Oct., 1980, p. 34.
R. M. Cox et al., "MLS-A Practical Application of Microwave Technology", IEEE Trans. Mic. Theory and Tech., vol. MTT-24, No. 12, Dec. 1976, p. 964.
S. J. Robinson, "MADGE-A Portable Aid for Aircraft Landing", Microwave System News, vol. 5, No. 2, Apr./May 1975, p. 16A.
"Thomson-CSF"
Blum Theodore M.
Sotomayor John B.
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