Wide area time domain radar array

{
  "publication_number": "US6218979B1",
  "country": "US",
  "kind": "B1",
  "title": "Wide area time domain radar array",
  "abstract": "A system and method for high resolution radar imaging using a sparse array of time modulated ultra wideband (TM-UWB) radars. Two or more TM-UWB radars are arranged in a sparse array. Each TM-UWB radar transmits ultra wideband pulses that illuminate a target, and at least one receives the signal returns. The signal return data is processed according to the function being performed, such as imaging or motion detection. The TM-UWB radar array operates in several modes. In a first mode, each TM-UWB radar transmits and receives back scattering returns, and at least one TM-UWB radar receives forward scattering returns. In a second mode, each TM-UWB radar transmits but only one of the radars receives signal returns, both back and forward scattering. In a third mode, each TM-UWB radar transmits and receives back scattering signal returns, but neither receives forward scattering returns. TM-UWB radios can be used to perform other functions, such as handling communications between the radars and determining the distance separating one radar from another.",
  "claims": [
    "1. A radar system comprising: a first time modulated ultra wideband (TM-UWB) radar, wherein said first TM-UWB radar is adapted to transmit UWB pulses toward a target and receive first signal returns, adapted to provide a wireless communications link with a second TM-UWB radar, and adapted to determine a distance between said first TM-UWB radar and said second TM-UWB radar, and wherein said UWB pulses have a wavelength corresponding to the center frequency of said UWB pulses, said second TM-UWB radar, spaced said distance from said first TM-UWB radar, wherein said second TM-UWB radar is adapted to transmit further UWB pulses toward said target and receive second signal returns, and adapted to provided a wireless communications link with said first TM-UWB radar, wherein said further UWB pulses have said wavelength, wherein said second TM-UWB radar transmits said second signal returns to said first TM-UWB radar via said wireless communications link that is provide by said first and second TM-UWB radars; and a processor in communications with said first TM-UWB radar, wherein said processor generates an image of said target based on said first and second signal returns and said distance between said first TM-UWB radar and said second TM-UWB radar.",
    "2. The radar system of claim 1, wherein said processor detects motion of said target based on said first and second signal returns."
  ],
  "cpc": [
    "G01S 13/888",
    "G01S 13/003",
    "G01S 13/0209",
    "G01S 13/87",
    "H01Q 3/2682"
  ],
  "assignees": [
    "TIME DOMAIN CORP"
  ],
  "filing_date": "1999-06-14",
  "publication_date": "2001-04-17",
  "grant_date": "2001-04-17",
  "priority_date": "1999-06-14",
  "application_number": "US-33250399-A",
  "family_id": "23298512",
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}