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Distributed-array radar system comprising an array of interconnected elementary satellites

  • US 4,843,397 A
  • Filed: 03/25/1988
  • Issued: 06/27/1989
  • Est. Priority Date: 03/26/1987
  • Status: Expired due to Fees
First Claim
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1. A radar system for primary and secondary surveillance of an airspace, comprising:

  • a plurality of elementary satellites spaced apart in a distributed array in space and each provided with;

    an antenna element forming with the antenna elements of the other elementary satellites of the distributed array a phased array antenna of an area corresponding substantially to the area of said distributed array of elementary satellites,receiver means connected to said antenna element for receiving radar signals from said airspace,transmitter means connected to said antenna element for transmitting radar signals into said airspace, andcommunication means for receiving signals for controlling the element and transmitting radar signals from the elementary satellite;

    a main satellite spaced from said distributed array of elementary satellites in space and provided with communication means in communication with the communication means of each of said elementary satellites for transmitting signals for controlling the antenna element thereof and for receiving radar signals transmitted from individual ones of said elementary satellites; and

    a ground station in wireless communication with said main satellite for receiving radar information from said main satellite corresponding to the radar signals received thereby and transmitted from the individual ones of said elementary satellites.

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