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Anti-collision vehicular radar system

  • US 4,308,536 A
  • Filed: 02/26/1979
  • Issued: 12/29/1981
  • Est. Priority Date: 02/26/1979
  • Status: Expired due to Term
First Claim
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1. A system using a reflected energy signal from an irradiated object to determine whether a moving vehicle and said object are on a collision course and to provide a warning of an impending collision, the system comprising:

  • transmitter means for irradiating said object with first and second over-lapping pulsed radiant energy beams,means for comparing reflected signals from the first and second beams and for providing pulses upon detection of reflected signals from said object from both beams,means for periodically determining from said pulses the relative velocity and distance of said object with respect to said vehicle, for storing said periodically-determined relative velocity and distance to provide a table of relative velocity and distance, and for determining from said stored table of relative velocity and distance whether the vehicle and object are on a collision course to provide a warning signal at a time sufficient to prevent a collision if said object is determined to be in the path of the vehicle.

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