一种基于低秩特征的调频序列矩阵降噪与目标检测方法
文献类型：专利
| 作者 | 杜劲松 ; 王伟; 毕欣; 高洁; 赵越南; 田星; 仝盼盼; 张青石; 李想; 徐洪庆
|
| 发表日期 | 2015-09-16 |
| 专利国别 | 中国 |
| 专利号 | CN104914417B |
| 专利类型 | 发明授权 |
| 产权排序 | 1 |
| 权利人 | 中国科学院沈阳自动化研究所 |
| 其他题名 | Based on characteristic of low rank of the video sequence matrix and reduce noise and the target detection method |
| 中文摘要 | 本发明涉及一种基于低秩特征的调频序列矩阵降噪与目标检测方法，包括以下步骤：连续获取L个周期的接收信号，进行下混频至基带，得到L个周期的差拍信号为；进行离散采样，得到L行N列的矩阵S；通过两组随机取样，分别进行核范数优化求解，降噪结果S'；对矩阵S'的每一行作NFFT点FFT得到矩阵SR；对矩阵SR的每一列作LFFT点FFT，得到矩阵SRD；对矩阵SRD进行二维平均单元‑有序统计恒虚警检测，提取目标的距离和速度；本发明根据信号的低秩特征，可以应用矩阵填充理论对矩阵进行核范数优化求解，实现二维矩阵的降噪，有效改善信噪比，通过二维平均单元‑有序统计恒虚警检测，改进多普勒域的噪声估计，有效解决多目标检测问题。 |
| 是否PCT专利 | 否 |
| 英文摘要 | The invention claims a rank based on low frequency modulation characteristic of the matrix and reduce noise sequence and the target detecting method comprises the following steps: Continuously obtaining l period of the received signal to a lower mixing frequency base band l to obtain the period the difference signal is shot; Performing discrete sampling to obtain the l n rows a matrix s; By two groups of random sampling to carry out respectively core fan the optimizing solving to the result of s or; ' s to the matrix of each work nfft point fft to obtain the matrix sr; To the matrix of each row of the sr lfft point fft to obtain the matrix srd; To the matrix srd carries out two-dimensional average unit ‑ sequence counting constant false alarm detecting and extracting target distance and speed; The invention according to the signal of low rank characteristic can be used for filling matrix theory of the matrix to a fan the optimizing solving to realize two-dimensional matrix by reducing the noise effectively improve the signal-to-noise ratio by two-dimensional average unit ‑ sequence counting constant false alarm detecting improved doppler of noise estimating it effectively solves the problem of multiple target detecting problem. |
| 公开日期 | 2017-10-31 |
| 申请日期 | 2015-05-15 |
| 语种 | 中文 |
| 专利申请号 | CN201510252982.8 |
| 专利代理 | 沈阳科苑专利商标代理有限公司 21002 |
| 源URL | [http://ir.sia.cn/handle/173321/21208]  |
| 专题 | 沈阳自动化研究所_智能检测与装备研究室 |
| 推荐引用方式 GB/T 7714 | 杜劲松,王伟,毕欣,等. 一种基于低秩特征的调频序列矩阵降噪与目标检测方法. CN104914417B. 2015-09-16. |
入库方式： OAI收割
来源：沈阳自动化研究所
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