WO2022016796A1 - 一种线列阵阵列扩展方法 - Google Patents
一种线列阵阵列扩展方法 Download PDFInfo
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Abstract
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Claims (7)
- 一种线列阵阵列扩展方法,其特征在于,包括以下步骤:(1)获取线列阵的接收信号x(t);(2)将线列阵按奇、偶阵元分成两个子阵,分别得到两个子阵的接收信号x o(t)和x e(t);(3)计算奇、偶阵元构成的两个子阵的接收信号协方差矩阵R xx;(4)根据两个子阵接收信号的协方差矩阵R xx以及线列阵的旋转不变性构造扩展接收阵列信号Y;(5)计算扩展接收阵列信号Y的协方差矩阵R YY;(6)根据扩展接收阵列信号Y的协方差矩阵R YY,利用波束形成方法对扩展阵列进行波束形成和目标检测。
- 根据权利要求1所述的线列阵阵列扩展方法,其特征在于,所述步骤(1)中线列阵的接收信号为:x(t)=As(t)+n(t)其中,x(t)为2M×1维阵列接收信号向量:x(t)=[x 1(t),x 2(t),…,x 2M(t)] Τs(t)和n(t)分别为K×1维源信号向量和2M×1维噪声向量:s(t)=[s 1(t),s 2(t),…,s K(t)] Τn(t)=[n 1(t),n 2(t),…,n 2M(t)] ΤA为2M×K维的阵列流型矩阵:A=[a(θ 1),a(θ 2),…,a(θ K)]
- 根据权利要求1所述的线列阵阵列扩展方法,其特征在于,所述步骤(2)中,线列阵按奇、偶阵元分成两个子阵,两个子阵的接收信号分别为:x o(t)=[x 1(t),x 3(t),…,x 2M-1(t)] Τx e(t)=[x 2(t),x 4(t),…,x 2M(t)] Τ其中x i(t)为第i个阵元的接收信号,x o(t)为奇数号阵元构成的子阵的接收信号,x e(t)为偶数号阵元构成的子阵的接收信号,2M为线列阵的阵元数目。
- 根据权利要求1所述的线列阵阵列扩展方法,其特征在于,所述步骤(3)中,奇、偶阵元构成的两个子阵接收信号协方差矩阵为:R xx=E{x o(t)·x e Η(t)}=A oR ssA e Η其中,A o和A e分别为奇、偶阵元构成的两个子阵的阵列流型矩阵,R ss为源信号协方差矩阵。
- 根据权利要求5所述的线列阵阵列扩展方法,其特征在于,所述步骤(5)中,扩展接收阵列的信号协方差矩阵为:R YY=E(YY Η)。
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CN111736118B (zh) * | 2020-07-22 | 2020-11-17 | 东南大学 | 一种线列阵阵列扩展方法 |
CN113447887B (zh) * | 2021-09-02 | 2022-01-21 | 广东省新一代通信与网络创新研究院 | 全空间定位方法、装置、设备与计算机可读存储介质 |
CN114858271B (zh) * | 2022-07-05 | 2022-09-23 | 杭州兆华电子股份有限公司 | 一种声音探测用的阵列放大方法 |
CN116244561A (zh) * | 2023-03-14 | 2023-06-09 | 哈尔滨工程大学 | 一种基于组合子阵协方差矩阵的线列阵扩展方法 |
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CN104698433B (zh) * | 2015-03-16 | 2017-08-29 | 电子科技大学 | 基于单快拍数据的相干信号doa估计方法 |
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