Multiple-channel digital receiver for global positioning system
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United States of America Patent
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Nov 9, 2004
Grant Date -
N/A
app pub date -
Jun 9, 2000
filing date -
Jul 20, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to systems for receiving a digital radio signal and, more particularly, to receivers of radio signals, coded with a pseudo-noise sequence, which are used in global positioning system GPS (USA) and GLONASS (Russia), allowing a compensation effect for the narrow-band interference by using a device, controlled by the processor, with an automatic gain control, multilevel analog-to-digital converter, and additional correlation channel for detection of sinusoidal interference consisting of the digital generator having quadrature mixers and accumulators. Information from output of the of accumulators is read by a processor, in which is detected the presence (or absence) of interference, and the amplitude is evaluated. Therefore, the processor generates control signal directing amplification in the device using an automatic gain control.
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