Abstract

MORENO, David. Develop of a MATLAB algorithm for the resolutions optimization of an USRP B210 card for SDRadar applications. Maskay [online]. 2017, vol.7, n.1, pp.31-40. ISSN 1390-6712.  https://doi.org/10.24133/maskay.v7i1.338.

This paper analyzes the universal software radio peripherical (USRP) B210 limitations and characteristics to develop applications on Software Defined Radar (SDRadar). The developed algorithm uses a frequency modulated constant wave (FMCW) which implement a chirp signal, taking considering that 25 MHz is the maximum bandwidth that the USRP can provide with a maximum resolution of 6 meters. The method improves the resolution through several signals transmitted with different bandwidths obtaining different resolutions, which were stored in a simple matrix and analyzed. After simulations, it is determined that the 14 measurements done with bandwidth spacing of 0.5 MHz between every signal is the best way to improve the resolution. Finally, two scenarios are described for the optimization procedure, the first scenario is limited with a measurement error less than 1 meter and the second scenario is limited by measurement error between 1 and 2 meters getting a better effectiveness of the measurement under the first scenario with 69.15% of detected objectives compared with the 30.85% of effectiveness of the second one. This paper demonstrates that the algorithm used is useful on SDRadar applications to detect objectives, for topographic applications or SAR systems.

Keywords : USRP B210; algorithm; SDRadar; FMCW; resolution.

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