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US 8,044,853 B2Granted
Navigation receiver
AssigneeQUALCOMM Incorporated
InventorsLiang Zhao, Michael Kohlmann, Paul A. Conflitti, Roger Brockenbrough, Cormac S. Conroy, Leonid Sheynblat, Douglas Rowitch
Life of this patent
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Abstract
The subject matter disclosed herein relates to a system and method for processing navigation signals received from multiple global navigation satellite systems (GNSS'). In a particular implementation, signals received from multiple GNSS' may be processed in a single receiver channel.
Claims24
A mobile station comprising:
- a first receiver adapted to receive information over terrestrial wireless links, said receiver being further adapted to receive acquisition assistance (AA) information;
- and
- a second receiver adapted to receive two or more satellite positioning system (SPS) signals at an associated two or more carrier frequencies, the second receiver comprising:
- a circuit to downconvert said two or more received SPS signals in a single receiver path according to a common local oscillator frequency;
- and
- a baseband processor to determine pseudorange measurements associated with said received SPS signals based, at least in part, on said downconverted signals and said AA information.
3 more elements
A mobile station comprising:
- a first receiver adapted to receive information over terrestrial wireless links, said receiver being further adapted to receive acquisition assistance (AA) information;
- and
- a second receiver comprising:
- a low noise amplifier adapted to simultaneously receive a plurality of SPS signals originating at a plurality of associated global navigation satellite systems (GNSS's) and having different carrier frequencies;
- a common complex signal path to process said simultaneously received SPS signals, said complex signal path comprising a mixer adapted to generate in-phase and quadrature signal paths based, at least in part, on said received SPS signals;
- one or more analog to digital conversion (ADC) circuits adapted to provide sampled in-phase and quadrature components based, at least in part, on signals processed in said in-phase and quadrature signal paths;
- and
- a baseband processor to determine pseudorange measurements associated with said received SPS signals based, at least in part, on said processed signals and said AA information.
5 more elements
A method of processing satellite positioning system signals, the method comprising:
- receiving information, including acquisition assistance (AA) information, at a first receiver over a terrestrial wireless link;
- receiving a plurality of satellite positioning system (SPS) signals with a plurality of different carrier frequencies;
- downconverting the plurality of SPS signals in a single receiver path using a single local oscillator frequency to produce downconverted signals;
- and
- determining pseudorange measurements associated with the plurality of SPS signals based, at least in part, on the downconverted signals and the AA information.
2 more elements
An apparatus comprising:
- means for receiving information, including acquisition assistance (AA) information, at a first receiver over a terrestrial wireless link;
- means for receiving a plurality of satellite positioning system (SPS) signals with a plurality of different carrier frequencies;
- means for downconverting the plurality of SPS signals in a single receiver path using a single local oscillator frequency to produce downconverted signals;
- and
- means for determining pseudorange measurements associated with the plurality of SPS signals based, at least in part, on the downconverted signals and the AA information.
2 more elements
A computer program product residing on a processor-readable medium and comprising processor-readable instructions configured to cause a processor to:
- obtain information, including acquisition assistance (AA) information, from a terrestrial wireless receiver;
- downconvert a plurality of satellite positioning system (SPS) signals, with a plurality of different carrier frequencies, in a single receiver path using a single local oscillator frequency to produce downconverted signals;
- and
- determine pseudorange measurements associated with the plurality of SPS signals based, at least in part, on the downconverted signals and the AA information.
1 more element
Dependencies are inferred from the claim text.