基于防撞雷達(dá)的分集相控陣設(shè)計(jì)方法

唐堯; 李波; 杜自成

doi:10.11999/JEIT171121

基于防撞雷達(dá)的分集相控陣設(shè)計(jì)方法

doi: 10.11999/JEIT171121

唐堯^{1, 2, ,},
李波¹,
杜自成²

1.
西北工業(yè)大學(xué)電子信息學(xué)院 ??西安 ??710072
2.
西安電子工程研究所 ??西安 ??710100

詳細(xì)信息

作者簡(jiǎn)介:
唐堯：男，1987年生，工程師，博士生，研究方向?yàn)槔走_(dá)信號(hào)處理、車(chē)聯(lián)網(wǎng)和ADAS輔助駕駛

李波：男，1971年生，教授，博士生導(dǎo)師，研究方向?yàn)槎嗝襟w無(wú)線互聯(lián)網(wǎng)、無(wú)線移動(dòng)自組織網(wǎng)絡(luò)和嵌入式系統(tǒng)

杜自成：男，1963年生，研究員，研究方向?yàn)槔走_(dá)總體技術(shù)，微波電磁場(chǎng)和綜合射頻

通訊作者:
唐堯 ? confusedty@163.com

中圖分類(lèi)號(hào): TN958.5
計(jì)量
- 文章訪問(wèn)數(shù): 2276
- HTML全文瀏覽量: 950
- PDF下載量: 65
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2017-11-28
- 修回日期: 2018-04-20
- 網(wǎng)絡(luò)出版日期: 2018-05-30
- 刊出日期: 2018-08-01

Design of the Diversity Phased Array Based on Collision Avoidance Radar

Yao TANG^{1, 2
, ,},
Bo LI¹,
Zicheng DU²

1.
School of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, China
2.
Xi’an Electronic Engineering Research Institute, Xi’an 710100, China

摘要

摘要: 常規(guī)相控陣?yán)走_(dá)通過(guò)移相發(fā)射空間合成的相參信號(hào)形成能量聚集的天線方向圖，由于收發(fā)天線復(fù)用因此所合成的天線孔徑要低于收發(fā)分置的MIMO雷達(dá)。該文首先通過(guò)理論推導(dǎo)MIMO雷達(dá)在探測(cè)性能上和相控陣?yán)走_(dá)的一致性及區(qū)別，指出MIMO雷達(dá)的實(shí)質(zhì)優(yōu)勢(shì)在于發(fā)射波束的數(shù)字賦形。然后設(shè)計(jì)一種基于防撞雷達(dá)的分集相控陣，發(fā)射端采用相控體制，接收端采用DBF數(shù)字波束形成，通過(guò)分析移相器位數(shù)對(duì)該雷達(dá)性能的約束，證明在指定波束指向上該雷達(dá)在避免產(chǎn)生正交信號(hào)的前提下能達(dá)到和MIMO雷達(dá)相同的虛擬孔徑性能。最后通過(guò)計(jì)算機(jī)仿真，驗(yàn)證該方法的有效性和可行性。采用該雷達(dá)體制在保證合成波束寬度的前提下，能有效降低接收通道數(shù)，從而有效降低雷達(dá)成本并提高通道一致性。
- 分集相控陣 /
- 集中式MIMO雷達(dá) /
- 波形設(shè)計(jì) /
- 防撞雷達(dá)
Abstract: Conventional phased array radar transmits coherent signal to form antenna pattern. By transmitting and receiving antenna reuse its aperture is always less than MIMO radar. This paper firstly analyses the same points and the difference between MIMO radar and phased array radar. It further points out that the essential advantage of MIMO radar is the digital transmitting beam forming. Second it designs a diversity phased array radar in collision avoidance atmosphere. Its transmitting part uses phase array system, while the receiving part uses the Digital BeamForming (DBF). Through the analysis for the limitation of the digits phase shifter, it proves that this radar can achieve the same virtual aperture performance as MIMO radar, while the rader can avoid to produce the orthogonal signal. Finally through the computer simulation it verifies the feasibility and effectiveness of the method. This radar system can effectively reduce the cost and improve channel consistency under the premise of promised beam width.
- Diversity phased array /
- Centralized MIMO radar /
- Waveform design /
- Collision avoidance radar

HTML全文

圖 1 MIMO雷達(dá)處理流程圖

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圖 2 4×4MIMO雷達(dá)虛擬孔徑示意圖

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圖 3 收發(fā)共置MIMO雷達(dá)和相控陣?yán)走_(dá)方向圖比較

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圖 4 收發(fā)分置MIMO雷達(dá)示意圖

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圖 5 時(shí)間正交的MIMO雷達(dá)

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圖 6 頻率正交的MIMO雷達(dá)

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圖 7 基于相控陣的MIMO體制

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圖 8 兩發(fā)天線方向圖

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圖 9 多發(fā)射天線多次掃描方向圖覆蓋

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圖 10 虛擬孔徑等效示意圖

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圖 11 虛擬孔徑等效示意圖

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圖 12 無(wú)噪聲條件下3種雷達(dá)體制的方向圖對(duì)比

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圖 13 3種雷達(dá)體制的方向圖對(duì)比

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