Rate augmented step track system

Details Rate augmented step track system Rate augmented step track system

1976-09-08

1978-05-16

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 74, G01S 344

Patent

active

040902013

ABSTRACT:
A step track antenna system adapted for tracking rapidly moving signal sources, in which systematic step commands cause antenna rotation in fixed angular increments about each of two orthogonal axes so as to maximize the strength of the received signal. In each axis, the direction, or polarity, of each step is selected in response to a comparison of the signal strength existing before and after the last step that was taken about that axis. A determination is made from this comparison as to which direction a step must be taken in, to produce an increase in signal strength. The step tracking rate is augmented by generating a signal representative of the time integral of the polarity indications. The antenna servo system responds to this signal by imparting a corresponding, continuous rate of motion to the antenna. The effect of this rate augmentation is to reduce the amount of antenna motion which must be accounted for by the step tracking process.

REFERENCES:
patent: 3324472 (1967-06-01), Sundberg et al.
patent: 3798649 (1974-03-01), Holing
patent: 3842420 (1974-10-01), Rabow

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