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NAVIGATION DEVICE AND METHOD

  • US 20090234576A1
  • Filed: 03/13/2009
  • Published: 09/17/2009
  • Est. Priority Date: 03/14/2008
  • Status: Abandoned Application
First Claim
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1. A navigation device comprising:

  • a transceiver for projecting a detecting signal and receiving the detecting signal reflected from an obstacle in front of the transceiver;

    a timer for calculating a time interval T between projecting the detecting signal and receiving the detecting signal;

    an angle detector for detecting a projecting angle α

    of the detecting signal projected from the transceiver with respect to the vertical direction; and

    a processor for calculating a horizontal distance to the obstacle according to a velocity V of the detecting signal, the time interval T, and the projecting angle α

    .

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