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2009•Journal of Tsinghua University(Science and Technology)Requires access

Signal processing algorithms for GPS software receivers

Zhenming Feng

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Abstract

The global positioning system(GPS) receiver architecture was analyzed to develop a baseband signal processing algorithm for GPS receiver using general-purpose microprocessors.The signal processing scheme in traditional receivers was modified to create a software GPS receiver.During tracking,the local carrier and code are generated from a pre-stored carrier and code table,which reduces the computational burden.A non real-time GPS software receiver was implemented on a MATLAB platform and tested with the actual satellite signals.The test shows that the standard derivation of the positioning errors was 6.3 m.The work lays a foundation for implementation of a real-time GPS software receiver.

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What this paper is about

The global positioning system(GPS) receiver architecture was analyzed to develop a baseband signal processing algorithm for GPS receiver using general-purpose microprocessors.The signal processing scheme in traditional receivers was modified to create a software GPS receiver.During tracking,the local carrier and code are generated from a pre-stored carrier and code table,which reduces the computational burden.A non real-time GPS software receiver was implemented on a MATLAB platform and tested with the actual satellite signals.The test shows that the standard derivation of the positioning errors was 6.3 m.The work lays a foundation for implementation of a real-time GPS software receiver.

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Available abstract

The global positioning system(GPS) receiver architecture was analyzed to develop a baseband signal processing algorithm for GPS receiver using general-purpose microprocessors.The signal processing scheme in traditional receivers was modified to create a software GPS receiver.During tracking,the local carrier and code are generated from a pre-stored carrier and code table,which reduces the computational burden.A non real-time GPS software receiver was implemented on a MATLAB platform and tested with the actual satellite signals.The test shows that the standard derivation of the positioning errors was 6.3 m.The work lays a foundation for implementation of a real-time GPS software receiver.

Key concepts: Precision Lightweight GPS Receiver, Global Positioning System, Baseband, GPS disciplined oscillator, Time to first fix, Computer science, Assisted GPS, GPS signals

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