公开(公告)号：US20150084644A1

公开(公告)日：2015-03-26

申请号：US14496447

申请日：2014-09-25

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyuk-Je KIM ,  Jong-Moon LEE ,  Seong-Ho SON ,  Soon-Ik JEON ,  Hyung-Do CHOI

IPC: G01R25/00 ,  G01R23/02 ,  G01N22/00 ,  G01S13/02

CPC classification number: G01R25/00 ,  G01N22/00

Abstract: A phase measurement method in a microwave tomography system may include: transmitting a first Tx frequency signal, receiving a signal corresponding to the first Tx frequency signal, and measuring a first phase value;transmitting a second Tx frequency signal separated by a predetermined discrete frequency from the first Tx frequency signal, receiving a signal corresponding to the second Tx frequency signal, and measuring a second phase value; calculating a first phase difference based on a difference between the first and second phase values; calculating a second phase difference based on the discrete frequency; and determining an unwrapped phase value through comparison between the first and second phase differences.

Abstract translation: 微波断层摄影系统中的相位测量方法可以包括：发送第一Tx频率信号，接收对应于第一Tx频率信号的信号，以及测量第一相位值; 从所述第一Tx频率信号发送由预定离散频率分离的第二Tx频率信号，接收对应于所述第二Tx频率信号的信号，以及测量第二相位值; 基于第一和第二相位值之间的差来计算第一相位差; 基于离散频率计算第二相位差; 以及通过比较所述第一和第二相位差来确定展开的相位值。

公开(公告)号：US20140047543A1

公开(公告)日：2014-02-13

申请号：US13958552

申请日：2013-08-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung-Jin KIM ,  Jong-Moon LEE ,  Byung-Chul BAE ,  Hyung-Geun OH ,  Ki-Wook SOHN

IPC: H04L29/06

CPC classification number: H04L63/1441 ,  H04L2463/144

Abstract: An apparatus and method for detecting a Hyper Text Transfer Protocol (HTTP) botnet based on the densities of transactions. The apparatus includes a collection management unit, a web transaction classification unit, and a filtering unit. The collection management unit extracts metadata from HTTP request packets collected by a traffic collection sensor. The web transaction classification unit extracts web transactions by analyzing the metadata, and generates a gray list by arranging the extracted web transactions according to the frequency of access. The filtering unit detects an HTTP botnet by filtering the gray list based on a white list and a black list.

Abstract translation: 一种基于事务密度检测超文本传输​​协议（HTTP）僵尸网络的装置和方法。 该装置包括收集管理单元，网络交易分类单元和过滤单元。 收集管理单元从由流量采集传感器收集的HTTP请求数据包中提取元数据。 Web事务分类单元通过分析元数据来提取Web事务，并且通过根据访问频率排列提取的Web事务来生成灰色列表。 过滤单元通过基于白名单和黑名单过滤灰名单来检测HTTP僵尸网络。