Educational Low-Cost C-Band FMCW Radar System Comprising Commercial Off-the-Shelf Components for Indoor Through-Wall Object Detection
This paper presents an educational low-cost C-band frequency-modulated continuous wave (FMCW) radar system for use in indoor through-wall metal detection. Indoor remote-sensing applications, such as through-wall detection and positioning, are essential for the comprehensive realization of the intern...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/10/22/2758 |
| _version_ | 1797510613862187008 |
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| author | Hyunmin Jeong Sangkil Kim |
| author_facet | Hyunmin Jeong Sangkil Kim |
| author_sort | Hyunmin Jeong |
| collection | DOAJ |
| description | This paper presents an educational low-cost C-band frequency-modulated continuous wave (FMCW) radar system for use in indoor through-wall metal detection. Indoor remote-sensing applications, such as through-wall detection and positioning, are essential for the comprehensive realization of the internet of things or super-connected societies. The proposed system comprises a two-stage radio-frequency power amplifier, a voltage-controlled oscillator, circuits for frequency modulation and system synchronization, a mixer, a 3-dB power divider, a low-noise amplifier, and two cylindrical horn antennas (Tx/Rx antennas). The antenna yields gain values in the 6.8~7.8 range when operating in the 5.83~5.94 GHz frequency band. The backscattered Tx signal is sampled at 4.5 kHz using the Arduino UNO analog-to-digital converter. Thereafter, the sampled signal is transferred to the MATLAB platform and analyzed using a customized FMCW radar algorithm. The proposed system is built using commercial off-the-shelf components, and it can detect targets within a 56.3 m radius in indoor environments. In this study, the system could successfully detect targets through a 4 cm-thick ply board with a measurement accuracy of less than 10 cm. |
| first_indexed | 2024-03-10T05:33:39Z |
| format | Article |
| id | doaj.art-c6ad0d42f2c14b908708e1303490fc94 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T05:33:39Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-c6ad0d42f2c14b908708e1303490fc942023-11-22T23:06:41ZengMDPI AGElectronics2079-92922021-11-011022275810.3390/electronics10222758Educational Low-Cost C-Band FMCW Radar System Comprising Commercial Off-the-Shelf Components for Indoor Through-Wall Object DetectionHyunmin Jeong0Sangkil Kim1Department of Electronics Engineering, College of Engineering, Pusan National University, Busan 46241, KoreaDepartment of Electronics Engineering, College of Engineering, Pusan National University, Busan 46241, KoreaThis paper presents an educational low-cost C-band frequency-modulated continuous wave (FMCW) radar system for use in indoor through-wall metal detection. Indoor remote-sensing applications, such as through-wall detection and positioning, are essential for the comprehensive realization of the internet of things or super-connected societies. The proposed system comprises a two-stage radio-frequency power amplifier, a voltage-controlled oscillator, circuits for frequency modulation and system synchronization, a mixer, a 3-dB power divider, a low-noise amplifier, and two cylindrical horn antennas (Tx/Rx antennas). The antenna yields gain values in the 6.8~7.8 range when operating in the 5.83~5.94 GHz frequency band. The backscattered Tx signal is sampled at 4.5 kHz using the Arduino UNO analog-to-digital converter. Thereafter, the sampled signal is transferred to the MATLAB platform and analyzed using a customized FMCW radar algorithm. The proposed system is built using commercial off-the-shelf components, and it can detect targets within a 56.3 m radius in indoor environments. In this study, the system could successfully detect targets through a 4 cm-thick ply board with a measurement accuracy of less than 10 cm.https://www.mdpi.com/2079-9292/10/22/2758FMCW radar systemremote sensingArduinothrough-wall detection |
| spellingShingle | Hyunmin Jeong Sangkil Kim Educational Low-Cost C-Band FMCW Radar System Comprising Commercial Off-the-Shelf Components for Indoor Through-Wall Object Detection Electronics FMCW radar system remote sensing Arduino through-wall detection |
| title | Educational Low-Cost C-Band FMCW Radar System Comprising Commercial Off-the-Shelf Components for Indoor Through-Wall Object Detection |
| title_full | Educational Low-Cost C-Band FMCW Radar System Comprising Commercial Off-the-Shelf Components for Indoor Through-Wall Object Detection |
| title_fullStr | Educational Low-Cost C-Band FMCW Radar System Comprising Commercial Off-the-Shelf Components for Indoor Through-Wall Object Detection |
| title_full_unstemmed | Educational Low-Cost C-Band FMCW Radar System Comprising Commercial Off-the-Shelf Components for Indoor Through-Wall Object Detection |
| title_short | Educational Low-Cost C-Band FMCW Radar System Comprising Commercial Off-the-Shelf Components for Indoor Through-Wall Object Detection |
| title_sort | educational low cost c band fmcw radar system comprising commercial off the shelf components for indoor through wall object detection |
| topic | FMCW radar system remote sensing Arduino through-wall detection |
| url | https://www.mdpi.com/2079-9292/10/22/2758 |
| work_keys_str_mv | AT hyunminjeong educationallowcostcbandfmcwradarsystemcomprisingcommercialofftheshelfcomponentsforindoorthroughwallobjectdetection AT sangkilkim educationallowcostcbandfmcwradarsystemcomprisingcommercialofftheshelfcomponentsforindoorthroughwallobjectdetection |