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Method of determining range data in a time-of-flight ranging system

  • US 5,319,611 A
  • Filed: 03/31/1993
  • Issued: 06/07/1994
  • Est. Priority Date: 03/31/1993
  • Status: Expired due to Fees
First Claim
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1. A method of determining range data in a time-of-flight ranging system comprising:

  • (a) emitting plural energy emissions from at least one transducer in the same direction, one emission being emitted and received in a broad sensing volume and another in a narrow sensing volume,(b) analyzing echoes resulting from said emissions to determine the existence and position of an obstacle based on the broad sensing volume, and(c) determining one or both of the existence and position of the obstacle or features thereof based on the narrow sensing volume in the presence of anomalous resulting determinations based on the broad sensing volume.

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