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Artigo Acesso aberto Produção Nacional
BIBTEX RIS

SDR-based Radar for Human Detection

2022; Linguagem: Inglês

10.13052/2022.aces.j.370710

ISSN

1943-5711

Autores

Marcelo Bender Perotoni, Kenedy Marconi G. Santos, Danilo Brito Almeida, Daniel Jonathas,

Tópico(s)

Non-Invasive Vital Sign Monitoring

Resumo

Software-defined radios (SDRs) have been applied to several applications, taking advantage of their inherent versatility. It is reported a low-cost radar intended to detect human activity, at the frequency of 4.1 GHz, with an SDR on the receiving branch and a programmable RF synthesizer operating as a continuous-wave transmitter. Amplitude variations on the received signal indicate human activity, its operation is tested in indoor and outdoor scenarios. The interface to the SDR is performed using the open-source tool GNU Radio. It was possible to detect human movement at a maximum distance of 9 meters, in an open area. The system is versatile in terms of power and frequency, totally controlled by software in a transparent and straightforward way.

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