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二維相控陣-MIMO雷達(dá)聯(lián)合發(fā)射子陣劃分和波束形成設(shè)計(jì)方法

黃俊生,  蘇洪濤

黃俊生, 蘇洪濤. 二維相控陣-MIMO雷達(dá)聯(lián)合發(fā)射子陣劃分和波束形成設(shè)計(jì)方法[J]. 電子與信息學(xué)報(bào), 2020, 42(7): 1557-1565. doi: 10.11999/JEIT190429
引用本文: 黃俊生, 蘇洪濤. 二維相控陣-MIMO雷達(dá)聯(lián)合發(fā)射子陣劃分和波束形成設(shè)計(jì)方法[J]. 電子與信息學(xué)報(bào), 2020, 42(7): 1557-1565. doi: 10.11999/JEIT190429
Junsheng HUANG, Hongtao SU. Joint Transmitting Subarray Partition and Beamforming Design Method Based on Two-Dimensional Phased-MIMO Radar[J]. Journal of Electronics & Information Technology, 2020, 42(7): 1557-1565. doi: 10.11999/JEIT190429
Citation: Junsheng HUANG, Hongtao SU. Joint Transmitting Subarray Partition and Beamforming Design Method Based on Two-Dimensional Phased-MIMO Radar[J]. Journal of Electronics & Information Technology, 2020, 42(7): 1557-1565. doi: 10.11999/JEIT190429

二維相控陣-MIMO雷達(dá)聯(lián)合發(fā)射子陣劃分和波束形成設(shè)計(jì)方法

doi: 10.11999/JEIT190429 cstr: 32379.14.JEIT190429

  • 西安電子科技大學(xué)雷達(dá)信號(hào)處理國(guó)家重點(diǎn)實(shí)驗(yàn)室 西安 710071

基金項(xiàng)目: 國(guó)家自然科學(xué)基金(61372134)
詳細(xì)信息
    作者簡(jiǎn)介:

    黃俊生：男，1990年生，博士生，研究方向?yàn)樽赃m應(yīng)信號(hào)處理、雷達(dá)自適應(yīng)抗干擾

    蘇洪濤：男，1974年生，教授，研究方向?yàn)樽赃m應(yīng)信號(hào)處理、雷達(dá)自適應(yīng)抗干擾、超視距雷達(dá)技術(shù)

    通訊作者:

    蘇洪濤　suht@xidian.edu.cn

  • 中圖分類號(hào): TN958

Joint Transmitting Subarray Partition and Beamforming Design Method Based on Two-Dimensional Phased-MIMO Radar

  • National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China(61372134)
  • 摘要:

    為了有效地抑制干擾信號(hào)并進(jìn)一步提高雷達(dá)系統(tǒng)的性能，該文提出一種基于2維相控陣-MIMO雷達(dá)的聯(lián)合發(fā)射子陣劃分和波束形成設(shè)計(jì)方法。該方法首先將MIMO雷達(dá)系統(tǒng)的發(fā)射陣列等分成一定數(shù)目的非重疊子陣并給每個(gè)天線分配相同的發(fā)射能量，以確保發(fā)射信號(hào)具有恒模特性；其次，在一定的約束條件下，以最大化接收波束形成器的輸出信干噪比為準(zhǔn)則建立關(guān)于子陣結(jié)構(gòu)、每個(gè)子陣對(duì)應(yīng)的發(fā)射波束形成權(quán)矢量以及接收波束形成權(quán)矢量的優(yōu)化模型，并采用循環(huán)迭代方法進(jìn)行求解。仿真結(jié)果證實(shí)了所提方法的正確性和有效性。

    Abstract:

    In order to suppress effectively the interference signal and improve further the performance of radar system, a joint transmitting subarray partition and beamforming design method based on two-dimensional phased-MIMO radar is proposed. Firstly, the transmitting array of MIMO radar system is equally partitioned into a number of non-overlapping subarrays and the transmit power of each antenna is equal, so as to guarantee that the transmit signal has constant modulus characteristic. Then, the optimization model for subarray structure of transmitting array, transmit beamformer weight vectors and receive beamformer weight vector is established by maximizing the output signal-to-interference-plus-noise ratio of the receive beamformer under certain constraint conditions. Simulation results demonstrate the correctness and effectiveness of the proposed method.

    • HTML全文

  • 圖  1  子陣劃分結(jié)果

    圖  2  利用本文方法優(yōu)化得到的發(fā)射方向圖

    圖  3  利用本文方法優(yōu)化得到的發(fā)射-接收方向圖

    圖  4  發(fā)射方向圖的方位(俯仰)維最大增益值隨俯仰(方位)角的變化曲線圖

    圖  5  發(fā)射-接收方向圖的方位(俯仰)維最大增益值隨俯仰(方位)角的變化曲線圖

    圖  6  輸出信干噪比隨發(fā)射陣列的列數(shù)${N_{\rm{t}}}$的變化曲線圖

    表  1  循環(huán)迭代算法流程

    　初始化：初始化子陣個(gè)數(shù)$K$，目標(biāo)空間位置$({\theta _0},{\phi _0})$和散射系數(shù)${\gamma _0}$, $Q$個(gè)依賴于雷達(dá)系統(tǒng)發(fā)射波形的干擾的空間位置$\{ ({\theta _q},{\phi _q})\} _{q = 1}^Q$和散射
    　系數(shù)$\{ {\gamma _q}\} _{q = 1}^Q$, $P$個(gè)不依賴于雷達(dá)系統(tǒng)發(fā)射波形的干擾的空間位置$\{ ({\theta _p},{\phi _p})\} _{p = 1}^P$和功率$\{ \gamma _p^2\} _{p = 1}^P$，子陣結(jié)構(gòu)${{{F}}^0}$，發(fā)射波束形成權(quán)矢量
    　$\{ \bar {{w}}_k^0\} _{k = 1}^K$，系統(tǒng)發(fā)射總能量$\eta $，終止閾值$\beta $；
    　步驟 1　固定子陣結(jié)構(gòu)${{{F}}^v}$和發(fā)射波束形成權(quán)矢量$\{ \bar {{w}}_k^v\} _{k = 1}^K$，根據(jù)式(19)計(jì)算接收波束形成權(quán)矢量${{{g}}^{v + 1}}$；
    　步驟 2　固定子陣結(jié)構(gòu)${{{F}}^v}$和接收波束形成權(quán)矢量${{{g}}^{v + 1}}$，根據(jù)式(24)計(jì)算發(fā)射波束形成權(quán)矢量$\{ \bar {{w}}_k^{v + 1}\} _{k = 1}^K$；
    　步驟 3　固定發(fā)射波束形成權(quán)矢量$\{ \bar {{w}}_k^{v + 1}\} _{k = 1}^K$和接收波束形成權(quán)矢量${{{g}}^{v + 1}}$，根據(jù)式(29)和式(30)計(jì)算子陣結(jié)構(gòu)${{{F}}^{v + 1}}$；
    　步驟 4　判斷終止條件$|{\rm{SIN} }{ {\rm{R} }^{v + 1} } - {\rm{SIN} }{ {\rm{R} }^v}| \le \beta $是否滿足，滿足則終止，否則令$v = v+1$并重復(fù)步驟1至步驟4。
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  • 收稿日期:  2019-06-11
  • 修回日期:  2020-02-27
  • 網(wǎng)絡(luò)出版日期:  2020-04-30
  • 刊出日期:  2020-07-23

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