Radar-based Measurement of the Body Movements of Multiple Students in Classroom Environments
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866913595425554432 |
|---|---|
| author | Oshima, Yu Wang, Tianyi Kato, Masaya Kobayashi, Haruto Iwata, Itsuki Tanaka, Yuji Wu, Shuqiong Wakuta, Manabu Myowa, Masako Nishimura, Tomoko Senju, Atsushi Sakamoto, Takuya |
| author_facet | Oshima, Yu Wang, Tianyi Kato, Masaya Kobayashi, Haruto Iwata, Itsuki Tanaka, Yuji Wu, Shuqiong Wakuta, Manabu Myowa, Masako Nishimura, Tomoko Senju, Atsushi Sakamoto, Takuya |
| contents | We demonstrate the feasibility of the radar-based measurement of body movements in scenarios involving multiple students using a pair of 79-GHz millimeter-wave radar systems with array antennas. We quantify the body motion using the Doppler frequency calculated from radar echoes. The measurement accuracy is evaluated for two experimental scenarios, namely university students in an office and elementary school students in a classroom. The body movements measured using the two radar systems are compared to evaluate the repeatability and angle dependency of the measurement. Moreover, in the first scenario, we compare the radar-estimated body movement with subjective evaluation scores provided by two evaluators. In the first scenario, the coefficient of correlation between the radar-estimated body movement and the subjective evaluation score is 0.73 on average, with a maximum value of 0.97; in the second scenario, the average correlation coefficient of body movements measured using two radar systems is as high as 0.78. These results indicate that the proposed approach can be used to monitor the body movements of multiple students in realistic scenarios. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_02184 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Radar-based Measurement of the Body Movements of Multiple Students in Classroom Environments Oshima, Yu Wang, Tianyi Kato, Masaya Kobayashi, Haruto Iwata, Itsuki Tanaka, Yuji Wu, Shuqiong Wakuta, Manabu Myowa, Masako Nishimura, Tomoko Senju, Atsushi Sakamoto, Takuya Signal Processing We demonstrate the feasibility of the radar-based measurement of body movements in scenarios involving multiple students using a pair of 79-GHz millimeter-wave radar systems with array antennas. We quantify the body motion using the Doppler frequency calculated from radar echoes. The measurement accuracy is evaluated for two experimental scenarios, namely university students in an office and elementary school students in a classroom. The body movements measured using the two radar systems are compared to evaluate the repeatability and angle dependency of the measurement. Moreover, in the first scenario, we compare the radar-estimated body movement with subjective evaluation scores provided by two evaluators. In the first scenario, the coefficient of correlation between the radar-estimated body movement and the subjective evaluation score is 0.73 on average, with a maximum value of 0.97; in the second scenario, the average correlation coefficient of body movements measured using two radar systems is as high as 0.78. These results indicate that the proposed approach can be used to monitor the body movements of multiple students in realistic scenarios. |
| title | Radar-based Measurement of the Body Movements of Multiple Students in Classroom Environments |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2412.02184 |