., Kafabi (2016) Beamforming Radar Phased Mimo Dengan Ukuran Subarray Transmit Bervariasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Radar phased array telah banyak digunakan untuk mengarahkan
beam pada arah yang diinginkan berdasarkan pergeseran fase pada
elemen antenna. Gain pada sisi transmit sangat menguntungkan dalam
mendeteksi target di ruang bebas. Tipe radar lain yang sangat berbeda
adalah radar MIMO dengan antena collecated menyediakan resolusi
sudut dan pengidentifikasian parameter yang lebih baik.
Gabungan dari radar MIMO dan phased array dikembangkan
untuk memperoleh keunggulan dari kedua sistem radar tersebut.
Gabungan radar MIMO dan phased array didapatkan dengan mengatur
input antenna array menjadi beberapa ukuran subarray yang boleh
saling tumpang tindih yang dinamakan phased MIMO radar. Phased
MIMO radar dengan ukuran subarray transmit bervariasi didapatkan
dengan membagi array antenna menjadi subarray dengan ukuran yang
berbeda dan saling tumpang tindih. Ukuran subarray transmit bervariasi
yakni subarray yang jumlah elemen dari subarray baru masing-masing
selalu lebih besar dari subarray sebelumnya dan setiap subarray
memancarkan bentuk gelombang yang unik.
Dengan menggunakan cara ini, dapat diperoleh ukuran subarray
yang berbeda-beda yang dapat memfokuskan beberapa beam yang
mempunyai gain bervariasi pada target yang diinginkan. Berdasarkan
hasil simulasi diperoleh bahwa nilai SINR selalu lebih bagus dari radar
phased MIMO dengan ukuran subarray transmit serbasama. Pada
overall beampattern memiliki lebar HPBW yang juga selalu lebih
sempit dari radar phased MIMO dengan ukuran subarray transmit
serbasama. Nilai sidelobe pada overall beampattern dengan MVDR
beamformer paling rendah dibandingkan dengan phased array, MIMO
dan phased MIMO dengan ukuran subarray transmit serbasama
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Phased array radar has been widely used to steer the beam in
the desired direction by shifting the phase at antenna element. Gain on
the transmit side is very beneficial in detecting the target in free space.
Another type of very different radar is radar MIMO with collecated
antenna provide better angular resolution and identification of
parameters.
A combination of MIMO and phased array radar developed to
obtain the advantages of both the radar system. Combined MIMO radar
and phased array radar is obtained by adjusting the input array into
several sizes subarray may be overlapping called phased MIMO radar.
Phased MIMO radar with varies subarray size obtained with divides
transmit antenna array into subarray with different size and overlap.
Varies transmit subarray size, the subarray that the number of elements
of each new subarray is always greater than the previous subarray and
each subarray radiates a unique waveform.
By using this method, can be obtained subarray sizes varying to
focus multiple beams that have varying gain to the intended target.
Based on simulation results showed that the value of SINR is always
better than radar phased MIMO with equal transmit subarray size. In
overall beampattern, HPBW has also always narrower than radar
phased MIMO with equal transmit subarray. Sidelobes on the overall
beampattern with MVDR beamformer is the lowest compared with the
phased array, MIMO and phased MIMO with equal transmit subarray
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 623.734 8 Kaf b-1 |
| Uncontrolled Keywords: | Radar Phased -MIMO, subarray, HPBW, sidelobe, SINR |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6592.O6 Optical radar |
| Divisions: | Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 16 Jul 2020 02:52 |
| Last Modified: | 16 Jul 2020 02:52 |
| URI: | http://repository.its.ac.id/id/eprint/76389 |
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