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Global positioning system (GPS) assembly test using wireless transmission

  • US 7,889,123 B1
  • Filed: 08/28/2008
  • Issued: 02/15/2011
  • Est. Priority Date: 08/28/2008
  • Status: Expired due to Fees
First Claim
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1. A wireless communications device, comprising:

  • a GPS receiver adapted to receive GPS in-band radio-frequency (RF) signals in a GPS band;

    transmit circuitry onboard the wireless communications device adapted to transmit a radio-frequency (RF) signal in a wireless communications band that is different from the GPS band, wherein transmission of the RF signal causes a GPS in-band signal to be generated and received by the GPS receiver; and

    a control system onboard the wireless communications device adapted to test the GPS receiver by being adapted to;

    instruct the transmit circuitry to transmit the RF signal;

    determine a transmission noise level in the GPS receiver caused by receipt of the GPS in-band signal from the RF signal when the transmit circuitry is transmitting; and

    compare a nominal noise level representing a noise level in the GPS receiver based on the transmit circuitry not transmitting to the transmission noise level.

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