Method and apparatus for reducing jamming by beam forming using

Details Method and apparatus for reducing jamming by beam forming using Method and apparatus for reducing jamming by beam forming using

1997-09-15

1999-09-14

Issing, Gregory C.

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

Directive

Utilizing correlation techniques

G01S 316

Patent

active

059529687

ABSTRACT:
A method of reducing jamming in a global positioning system (GPS) satellite receiving system includes the steps of: a) selecting an initial weight value corresponding to each antenna element; b) selecting a weight adjustment scheme for adjusting the weights; c) measuring a power output from the antenna array; d) obtaining navigational data representing the orientation of the array; e) calculating for a gain of the antenna array corresponding each of the GPS satellites, using the navigational data to provide an indication of the orientation of the array relative to each GPS satellite; f) estimating a power level of a received signal corresponding to each GPS satellite; g) solving for the signal to noise ratio for each GPS satellite, using the estimated power level corresponding to each GPS satellite; h) iteratively and continuously adjusting the weights to obtain a greatest value of the signal to noise ratio; and i) continuously repeating steps (c) through (h).

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