Radar FMCW dengan IQ Demodulator Jamak untuk Deteksi Pernafasan pada Pengaruh Clutter

HANA PRATIWI, MUJIB RAMADAN HIDAYAT, AHMAD FATHAN MAARIF, ALOYSIUS ADYA PRAMUDITA, FIKY YOSEP SURATMAN

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ABSTRAK

Pada pendeteksian pernafasan menggunakan sistem radar maka adanya pantulan dari sejumlah objek statis di sekitar target akan memberikan pengaruh pada hasil pendeteksian. Modifikasi pada sistem FMCW telah diusulkan untuk memberikan kemampuan dalam mendeteksi pernafasan multi target. Konsep deteksi fasa dilaborasi pada metode usulan untuk menghadirkan kemampuan deteksi pergeseran kecil. IQ demodulator jamak diusulkan sebagai konsep modifikasi pada sistem FMCW untuk permasalah tersebut. Pengujian kemampuan sistem usulan pada kondisi clutter dilakukan dengan melakukan kajian teoritis dan simulasi komputer. Pengujian dilakukan pada kawasan waktu dan kawasan frekuensi. Hasil-hasil yang diperoleh menunjukkan bahwa metode IQ demodulator jamak yang diusulkan memiliki kemampuan dalam mendeteksi pernafasan secara multi target dan mampu mempertahankan kemampuan tersebut pada kondisi adanya clutter.

Kata kunci: deteksi pernafasan, multi target, FMCW, IQ demodulator, clutter


ABSTRACT

In the detection of respiration using a radar system, the reflection of static objects around the target will have an effect to the detection results. Modifications to the FMCW system have been proposed to provide the ability to detect multi-target respiration. The concept of phase detection is elaborated on the proposed method to provide small shift detection capabilities. Multiple IQ demodulator is proposed as a modified concept on the FMCW system for this problem. Testing the ability of the proposed system under clutter conditions is carried out by conducting theoretical studies and computer simulations. Tests carried out in the time zone and frequency region. The results obtained indicate that the proposed multiple-method IQ demodulator has the ability to detect multi-target respiration and is able to maintain that ability in the presence of clutter.

Keywords: respiration detection, multi target, FMCW, IQ demodulator, clutter


Kata Kunci


Deteksi Pernafasan; Multi target; FMCW; IQ demodulator; Clutter.

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DOI: https://doi.org/10.26760/elkomika.v8i1.125

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ISSN (print) : 2338-8323 | ISSN (electronic) : 2459-9638

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