Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1979-03-16
1982-09-21
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
364452, 244 319, G01S 124
Patent
active
043509835
ABSTRACT:
A flying object is precisely steered by determining the position of the fng object with the aid of a trigonometric calculation. For this purpose pulse signals emitted in synchronism from two ground stations are received by the flying object and the time difference between the two arrivals is measured. The flying object is also equipped with a clock which is synchronized with the clocks of the two ground stations. Thus, the emitting times are available in the flying object. Based on the measured time difference between the receipt of the two pulses and on the given emission time the coordinates of the actual position of the flying object are calculated. The calculated position coordinates are compared with position coordinates of a rated course stored in the airborne equipment whereby a course deviation signal is calculated. The course deviation signal is then applied to the steering mechanism of the flying object to bring the latter back onto the rated course.
REFERENCES:
patent: 2811717 (1957-10-01), Palmer
patent: 3816832 (1974-06-01), Elwood
patent: 3941984 (1976-03-01), Chappell et al.
patent: 4179693 (1979-12-01), Evans et al.
Blaha Alfred
Schwarzler Hans-Juergen
Blum Theodore M.
Fasse W. G.
Gould D. F.
Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftu
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