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Radar detection from pulse record with interference

  • US 7,702,291 B2
  • Filed: 03/31/2004
  • Issued: 04/20/2010
  • Est. Priority Date: 09/15/2003
  • Status: Active Grant
First Claim
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1. A radio transceiver, comprising:

  • radio front end for receiving, amplifying and down-converting and filtering a radio frequency (RF) signal to produce a low frequency received signal;

    analog-to-digital converter (ADC) operatively coupled to receive the low frequency received signal, the ADC producing an ingoing digital signal based on the received RF signal;

    baseband processor coupled to receive and process the ingoing digital signal;

    radar detection circuit coupled to receive the ingoing digital signal, wherein the radar detection circuit further includes;

    power detection circuitry that receives an ingoing digital signal and produces a power indication signal based on the ingoing digital signal;

    magnitude adjustment block coupled to receive the power indication signal to produce a magnitude adjusted signal; and

    a threshold comparison state machine that evaluates magnitude adjusted signal;

    wherein the radar detection circuit;

    detects incoming pulses and produces pulse data to a FIFO;

    generates a table of pulse data for a series of pulses;

    evaluates the pulse data within the table to remove pulse data for pulses that do not satisfy specified radar pulse characteristics;

    groups a plurality of pulse data within the table into groups of a specified size;

    performs radar detection processing; and

    wherein the baseband processor inhibits transmission of signals in overlapping frequency bands whenever a radar signal has been detected.

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