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System and method for obstacle detection and warning

  • US 8,477,063 B2
  • Filed: 10/03/2008
  • Issued: 07/02/2013
  • Est. Priority Date: 10/03/2008
  • Status: Active Grant
First Claim
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1. An obstacle detection system, comprising:

  • a transmission antenna operable to radiate a radio frequency (RF) signal, wherein the transmission antenna is configured to rotate;

    a transmitter operable to control transmission of the RF signal from the transmission antenna, wherein the transmitter is configured to control transmission of the RF signal as the transmission antenna rotates such that an incident angle at which the transmitted RF signal contacts an obstacle changes over time;

    a receiver antenna operable to receive a reflection of the RF signal; and

    processing circuitry operable to analyze one or more characteristics of a radar cross section (RCS) of the received reflection that result from changes in the incident angle to identify the obstacle and one or more physical attributes of the obstacle.

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