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    • 1. 发明申请
    • RADAR SIGNALS CLUSTERING METHOD USING FREQUENCY MODULATION CHARACTERISTICS AND COMBINATION CHARACTERISTICS OF SIGNALS, AND SYSTEM FOR RECEIVING AND PROCESSING RADAR SIGNALS USING THE SAME
    • 使用频率调制特性的RADAR信号聚类方法和信号的组合特征以及使用该接收和处理雷达信号的系统
    • US20100283666A1
    • 2010-11-11
    • US12690634
    • 2010-01-20
    • Dong-Weon LeeJin-Woo HanKyu-Ha SongYoung-Jin Ryoo
    • Dong-Weon LeeJin-Woo HanKyu-Ha SongYoung-Jin Ryoo
    • G01S13/00
    • G01S7/021G01S3/74
    • Disclosed is a radar signal clustering method using frequency modulation characteristics and combination characteristics of signals including: a first step of assigning pulses of received radar signals to cells consisting of parameters including radio frequency (RF) and angle of arrival (AOA) of the pulses; a second step of calculating a pulse density distribution of each cell using a kernel density estimator; a third step of extracting a corresponding cell as a frequency fixed cluster if the calculated pulse density distribution is greater than a threshold of the frequency fixed cluster; a fourth step of making cell groups by merging remaining cells that are not extracted as the frequency fixed clusters; a fifth step of calculating a pulse density distribution of each cell group by using the kernel density estimator for each cell group; and a sixth step of comparing the calculated pulse density distribution for each cell group with each threshold according to a signal combination type of frequency agile clusters, thus to classify and extract each cell group according to the signal combination type.
    • 公开了一种使用频率调制特性和信号的组合特性的雷达信号聚类方法,包括:将接收到的雷达信号的脉冲分配给由包括射频(RF)和到达角(AOA)的参数组成的小区的第一步骤; 使用核密度估计器计算每个单元的脉冲密度分布的第二步骤; 如果计算的脉冲密度分布大于频率固定簇的阈值,则提取相应的小区作为频率固定簇的第三步骤; 通过将未提取的剩余单元合并为频率固定簇来制作单元组的第四步骤; 通过使用每个单元组的核密度估计器来计算每个单元组的脉冲密度分布的第五步骤; 以及第六步骤,根据频率敏捷簇的信号组合类型,将每个单元组的计算脉冲密度分布与每个阈值进行比较,从而根据信号组合类型对每个单元组进行分类和提取。
    • 2. 发明授权
    • Method and device for recognizing PRI modulation type of radar signal
    • 用于识别PRI调制类型的雷达信号的方法和装置
    • US08531330B2
    • 2013-09-10
    • US13229876
    • 2011-09-12
    • Kyu-Ha SongJin-Woo HanByung-Koo ParkJe-Il Jo
    • Kyu-Ha SongJin-Woo HanByung-Koo ParkJe-Il Jo
    • G01S7/28
    • G01S7/021
    • A method and device for recognizing a pulse repetition interval (PRI) modulation type of a radar signal are provided. The method for recognizing a pulse repetition interval (PRI) modulation type includes: extracting time of arrival (TOA) information of pulses aligned in time order from a received radar signal; generating a PRI sequence based on a difference of adjacent TOAs in the TOA information of pulses; generating a difference of PRIs (DPRI) sequence by using a difference of the adjacent PRIs in the PRI sequence; generating respective symbol sequences by using specific partition rules from the PRI sequence and the DPRI sequence; and calculating characteristic factors from the symbol sequences, and comparing the characteristic factors with threshold values for discriminating a PRI modulation type to determine the PRI modulation type. Thus, the PRI modulation type, a promising feature for radar signal identification, can be precisely derived.
    • 提供了用于识别雷达信号的脉冲重复间隔(PRI)调制类型的方法和装置。 用于识别脉冲重复间隔(PRI)调制类型的方法包括:提取从接收的雷达信号按时间顺序排列的脉冲的到达时间(TOA)信息; 基于脉冲的TOA信息中的相邻TOA的差产生PRI序列; 通过使用PRI序列中的相邻PRI的差异来产生PRI(DPRI)序列的差异; 通过使用来自PRI序列和DPRI序列的特定分区规则来生成各个符号序列; 以及从所述符号序列计算特征因子,以及将所述特征因子与用于鉴别PRI调制类型的阈值进行比较以确定所述PRI调制类型。 因此,可以精确地推导出PRI调制类型,用于雷达信号识别的有希望的特征。