JP7044291B2 - コプライム平面アレーブロックサンプリングテンソル信号構造に基づく自由度強化型空間スペクトル推定方法 - Google Patents
コプライム平面アレーブロックサンプリングテンソル信号構造に基づく自由度強化型空間スペクトル推定方法 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0892—Details related to signal analysis or treatment; presenting results, e.g. displays; measuring specific signal features other than field strength, e.g. polarisation, field modes, phase, envelope, maximum value
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/74—Multi-channel systems specially adapted for direction-finding, i.e. having a single antenna system capable of giving simultaneous indications of the directions of different signals
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/21—Design or setup of recognition systems or techniques; Extraction of features in feature space; Blind source separation
- G06F18/211—Selection of the most significant subset of features
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/21—Design or setup of recognition systems or techniques; Extraction of features in feature space; Blind source separation
- G06F18/211—Selection of the most significant subset of features
- G06F18/2113—Selection of the most significant subset of features by ranking or filtering the set of features, e.g. using a measure of variance or of feature cross-correlation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/04—Details
- G01S3/043—Receivers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/22—Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array
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- Complex Calculations (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Description
(1)本発明はテンソルでコプライム平面の実際の受信信号を表示し、従来の方法と異なり二次元空間情報をベクトル化して特徴付け、かつスナップショット情報を平均して二次統計量を得て、本発明は各サンプリングスナップショット信号を第三次元で重ね合わせ、かつ四次元空間情報を含む二次相互相関テンソルを利用して空間スペクトル推定を行い、コプライム平面アレーの実際の入射信号の多次元空間構造情報を保留する。
(2)本発明はブロックサンプリングの方式によりテンソル信号構造を行い、かつ等価サンプリング時系列情報を有するブロックサンプリングバーチャルドメインテンソル信号を導出し、該バーチャルドメインテンソル信号とコプライム平面アレーの実際の受信テンソル信号は同じ構造を有し、その四次自己相関テンソルを直接導出して求めることができ、空間平滑化などの操作を導入して単一のスナップショットバーチャルドメイン信号に存在するランク不足問題を解決する必要がなく、自由度の損失を効果的に低減する。
(3)本発明はテンソルCANDECOMP/PARACFAC分解の方式を採用してブロックサンプリングバーチャルドメインテンソル信号の四次自己相関テンソルに対して多次元特徴抽出を行い、それによりバーチャルドメインテンソル信号とノイズサブ空間との間の関係を確立し、構造自由度が向上したテンソル空間スペクトルに基礎を提供する。
Claims (6)
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PCT/CN2020/088568 WO2021068495A1 (zh) | 2020-05-03 | 2020-05-03 | 基于平面互质阵列块采样张量信号构造的自由度增强型空间谱估计方法 |
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JP2022508506A JP2022508506A (ja) | 2022-01-19 |
JP7044291B2 true JP7044291B2 (ja) | 2022-03-30 |
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US (1) | US11422177B2 (ja) |
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WO (1) | WO2021068495A1 (ja) |
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JP7044290B2 (ja) * | 2020-05-03 | 2022-03-30 | 浙江大学 | 構造化仮想ドメインのテンソル信号の処理に基づく互いに素なエリアアレイの二次元到来方向の推定方法 |
CN112904272B (zh) * | 2021-01-18 | 2022-02-18 | 浙江大学 | 基于互相关张量的三维互质立方阵列波达方向估计方法 |
CN113359086B (zh) * | 2021-06-25 | 2023-05-12 | 南京航空航天大学 | 基于增广互质阵列的加权子空间数据融合直接定位方法 |
CN114092817B (zh) * | 2021-12-14 | 2022-04-01 | 深圳致星科技有限公司 | 目标检测方法、存储介质、电子设备及目标检测装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2017116425A (ja) | 2015-12-24 | 2017-06-29 | 学校法人東京電機大学 | Mimoレーダシステム、および信号処理装置 |
CN107037392A (zh) | 2017-03-01 | 2017-08-11 | 浙江大学 | 一种基于压缩感知的自由度增加型互质阵列波达方向估计方法 |
CN109471086A (zh) | 2018-10-18 | 2019-03-15 | 浙江大学 | 基于多采样快拍和集阵列信号离散傅里叶变换的互质mimo雷达波达方向估计方法 |
CN110927661A (zh) | 2019-11-22 | 2020-03-27 | 重庆邮电大学 | 基于music算法的单基地展开互质阵列mimo雷达doa估计方法 |
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US10054666B2 (en) * | 2014-09-26 | 2018-08-21 | The United States Of America, As Represented By The Secretary Of The Navy | Sparse space-time adaptive array architecture |
CN107611624B (zh) * | 2017-08-24 | 2020-10-23 | 电子科技大学 | 低旁瓣的基于互质思想的分子阵布阵方法 |
CN108710102B (zh) * | 2018-05-15 | 2020-09-04 | 浙江大学 | 基于互质阵列二阶等价虚拟信号离散傅里叶逆变换的波达方向估计方法 |
CN110133576B (zh) * | 2019-05-23 | 2020-11-27 | 成都理工大学 | 基于级联残差网络的双基互质mimo阵列方位估计算法 |
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- 2020-05-03 WO PCT/CN2020/088568 patent/WO2021068495A1/zh active Application Filing
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2017116425A (ja) | 2015-12-24 | 2017-06-29 | 学校法人東京電機大学 | Mimoレーダシステム、および信号処理装置 |
CN107037392A (zh) | 2017-03-01 | 2017-08-11 | 浙江大学 | 一种基于压缩感知的自由度增加型互质阵列波达方向估计方法 |
CN109471086A (zh) | 2018-10-18 | 2019-03-15 | 浙江大学 | 基于多采样快拍和集阵列信号离散傅里叶变换的互质mimo雷达波达方向估计方法 |
CN110927661A (zh) | 2019-11-22 | 2020-03-27 | 重庆邮电大学 | 基于music算法的单基地展开互质阵列mimo雷达doa估计方法 |
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US20210364564A1 (en) | 2021-11-25 |
JP2022508506A (ja) | 2022-01-19 |
WO2021068495A1 (zh) | 2021-04-15 |
US11422177B2 (en) | 2022-08-23 |
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