A Software Defined Radio Implementation of Direct Sequence Spread Spectrum Harmonic Radar
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Date
2022-06
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University of New Brunswick
Abstract
Proposed is a harmonic radar system back end that makes use of an off the shelf software defined radio to yield a low-form factor and light weight transceiver. This module, composed of the USRP b200 mini software defined radio and the Raspberry Pi 4 computer, forms a flexible test bed for harmonic radar waveform research and testing. Using the transceiver module a variety of direct sequence spread spectrum waveforms were used to detect a tag with the intention of testing the system and finding the most favorable sequence of the proposed options. Although an SDR is unlikely to outperform a custom transceiver optimized for a given application, it has been found that they make a suitable low cost alternative working best with coded radar waveforms.