基于矩陣填充的合成寬帶高頻雷達非網(wǎng)格目標分辨技術(shù)研究

陳秋實; 楊強; 董英凝; 姚迪; 葉磊; 鄧維波

doi:10.11999/JEIT170449

基于矩陣填充的合成寬帶高頻雷達非網(wǎng)格目標分辨技術(shù)研究

doi: 10.11999/JEIT170449

1.
(哈爾濱工業(yè)大學(xué)電子與信息工程學(xué)院哈爾濱 150001)

基金項目:

國家自然科學(xué)基金(61171182, 61032011, 61171180, 61571159)，中央高?；究蒲袠I(yè)務(wù)費專項資金(HIT.MKSTISP. 201613, HIT.MKSTISP.201626)

計量
- 文章訪問數(shù): 894
- HTML全文瀏覽量: 116
- PDF下載量: 228
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2017-05-12
- 修回日期: 2017-09-19
- 刊出日期: 2017-12-19

Off-the-grid Targets Resolution of Synthetic Bandwidth High Frequency Radar Based on Matrix Completion

1.
(School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China)

Funds:

The National Natural Science Foundation of China (61171182, 61032011, 61171180, 61571159), The Fundamental Research Funds for the Central Universities (HIT. MKSTISP.201613, HIT.MKSTISP.201626)

摘要

摘要: 高頻雷達由于工作在擁擠的高頻頻段(3~30 MHz)，連續(xù)頻帶資源十分有限，有限的帶寬限制了對目標的分辨能力。該文引入一種合成寬帶的發(fā)射信號，同時針對該信號，提出一種基于矩陣填充(Matrix Completion, MC)的1維和2維目標參數(shù)估計方法，分別稱之為矩陣填充1維估計(MCE-1D)和矩陣填充2維估計(MCE-2D)方法，該方法將不完備采樣集合變換成低秩矩陣，通過構(gòu)造雙重漢克爾(two-fold Hankel)矩陣將其轉(zhuǎn)化為半定規(guī)劃(Semi- Definite Programming, SDP)問題求解。新方法應(yīng)用于高頻雷達中，可以在非連續(xù)譜的背景下獲得場景中目標位置的準確估計，很好地解決了非網(wǎng)格目標在傳統(tǒng)網(wǎng)格類方法中的基失配問題，新方法對于非網(wǎng)格目標具有更高的分辨能力及抗噪性能。仿真處理結(jié)果驗證了該方法的有效性。
- 高頻雷達 /
- 目標分辨 /
- 矩陣填充 /
- 非網(wǎng)格
Abstract: High Frequency Radar (HFR) works in the crowded high-frequency band (3~30 MHz) with limited continuous bandwidth. It affects the ability to distinguish the near targets. Therefore, this paper introduces a kind of synthesis bandwidth signal with a proposed method for estimating the target parameters in 1-D and 2-D based on Matrix Completion (MC). They are respectively named Matrix Completion Estimation for One Dimension (MCE-1D) and Matrix Completion Estimation for Two Dimensions (MCE-2D). The incomplete sampling set can be considered as low rank matrix, by constructing the two-fold Hankel matrix, this problem is transformed into a Semi-Definite Programming (SDP) problem. Using this new method to the high frequency radar, then the accurate estimation of the target position in the scene can be obtained in the background of the discontinuous spectrum, which solves the problem of base mismatch for off-the-grid targets in the traditional grid estimate method. It also has higher resolution and anti-noise performance. The simulation results demonstrate the effectiveness of this method.
- High Frequency Radar (HFR) /
- Multi-target resolution /
- Matrix Completion (MC) /
- Off-the-grid

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