Abstract: | This paper describes a software-defined GPS signal generator with a direct digital synthesis (DDS) architecture to examine the effects of quantization on a signal. We explore the power and cardinality of spurious frequency components due to phase and amplitude quantization on the generated signal. MATLABĀ® models are developed to match the hardware that is implemented in a field programmable gate array (FPGA) with a high speed digital-to-analog converter (DAC). Once the MATLAB model is validated against hardware, it is used to determine the optimal phase and amplitude resolution for given implementation. |
Published in: |
Proceedings of the 2018 International Technical Meeting of The Institute of Navigation January 29 - 1, 2018 Hyatt Regency Reston Reston, Virginia |
Pages: | 857 - 868 |
Cite this article: |
Patel, Pranav R., Gunawardena, Sanjeev, Martin, Richard K., "Characterization of Phase and Amplitude Quantization Effects in a Direct Digital Synthesis-based Waveform Generator for Future Software-Defined GPS Payloads," Proceedings of the 2018 International Technical Meeting of The Institute of Navigation, Reston, Virginia, January 2018, pp. 857-868.
https://doi.org/10.33012/2018.15559 |
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