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Aggregation of shaped directional receiving antenna array for improved location information

  • US 6,041,232 A
  • Filed: 12/23/1997
  • Issued: 03/21/2000
  • Est. Priority Date: 12/23/1997
  • Status: Expired due to Term
First Claim
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1. A communications device comprised ofa. two or more directional antennae wherebyi. each antenna has a defined base location vector, an orientation direction vector, an attenuation function, and interface circuitry,ii. each antenna orientation direction vector lines in the major axis of the contour map of said antenna'"'"'s said attenuation function,iii. said antenna base location vectors are proximate to said boundary of a convex shape in two or more dimensions,iv. for each said antenna, there exists at least one other antenna whereby the main attenuation lobes overlap,v. each said antenna interface circuit generates one or more quantities over time intervals based upon the physical state of the antenna,b. the antenna collection possesses a shared center whereini. the base location vector is a distance from said antenna collection center which is a small fraction of the distance travel by a signal propagating in the communications medium within the time step of antenna interface sampling circuitry,ii. associated with the antenna collection center is an angular measure for one or more dimensions so that the user transmission/reception domain can be mapped in,c. one or more information processors wherebyi. said antenna generated quantities are received by said information processors,ii. said received antenna generated quantities are related by linear combination of user area transmission strengths,iii. said user area transmission strengths at a given time step at a each discrete time-propagation-displacement step and each discrete angular-dimensional displacement step can be reasonably approximated by a linear combination of antenna generated quantities received by said information processor at said given time step and a finite number of time steps thereafter.

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