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Development of a GPU based two-way time transfer modem

T. Gotoh, J. Amagai, T. Hobiger, M. Fujieda, M. Aida
Nat. Inst. of Inf. & Commun. Technol., Japan
Conference on Precision Electromagnetic Measurements (CPEM), 2010

@article{gotohdevelopment,

   title={Development of a GPU-Based Two-Way Time Transfer Modem},

   author={Gotoh, T. and Amagai, J. and Hobiger, T. and Fujieda, M. and Aida, M.},

   journal={Instrumentation and Measurement, IEEE Transactions on},

   number={99},

   pages={1–5},

   issn={0018-9456},

   publisher={IEEE},

   year={2010}

}

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We have developed a new two-way time transfer modem, which adopts a dual pseudo-random noise (DPN) code. The usage of DPN signal dramatically improves time transfer precision without increasing connection fees of commercial communication satellites. In addition, the new modem is based on software-defined radio technology. As the only drawback of such a software implementation would be the processing speed, we overcome this problem by using a graphics processing unit (GPU) as a parallel platform. The usage of GPU enables real-time signal processing with the new modem.
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