公开(公告)号：KR101333111B1

公开(公告)日：2013-11-26

申请号：KR1020120129266

申请日：2012-11-15

Applicant: 국방과학연구소

Inventor： 김갑진 ,  임혁 ,  오벨레,브라운슨.오. ,  김량수 ,  황선녕

IPC: G01S5/14

Abstract: The present invention relates to technology for improving accuracy in wireless positioning and, more specifically, to a system and a method capable of implementing a probabilistic inference based on a Bayesian network model for improving the accuracy in the wireless positioning which uses received signal strength (RSS), time of arrival (ToA), and time difference of arrival (TDoA) information fusion. The present invention is operated by the fusion of a multiple wireless positioning method with the probabilistic inference based on the Bayesian network model, thereby facilitating stable positioning by using a set of information obtained from other positioning methods in case that the obtainment of accurate information is difficult in one positioning system by a malicious external attack. [Reference numerals] (AA) Start;(BB) End;(S600) Assume a prior probability distribution regarding initial random variables;(S610) Input RSS, ToA, TDoA information collected from each reference node;(S620) Extract a Gibbs sample by applying Gibbs Sampler algorithm;(S630) Estimate the location of a target node based on the extracted Gibbs sample

Abstract translation: 本发明涉及用于提高无线定位精度的技术，更具体地，涉及一种能够实现基于贝叶斯网络模型的概率推理的系统和方法，用于提高使用接收信号强度的无线定位精度（RSS ），到达时间（ToA）和到达时间差（TDoA）信息融合。 本发明通过多重无线定位方法与基于贝叶斯网络模型的概率推理的融合来操作，从而通过在获得准确信息困难的情况下使用从其他定位方法获得的一组信息来促进稳定定位 在一个定位系统中通过恶意的外部攻击。 （S6）从每个参考节点收集的输入RSS，ToA，TDoA信息;（S620）提取吉布斯样本（参考数字）（AA）开始;（BB）结束;（S600） 通过应用Gibbs Sampler算法;（S630）基于提取的吉布斯样本估计目标节点的位置

公开(公告)号：KR101302492B1

公开(公告)日：2013-09-02

申请号：KR1020120029663

申请日：2012-03-23

Applicant: 국방과학연구소

Inventor： 김갑진 ,  임혁 ,  김량수

IPC: H04W64/00 ,  G01S5/02 ,  H04W84/12

CPC classification number: H04W64/003 ,  G01S5/0284 ,  G01S5/14 ,  H04W84/12

Abstract: PURPOSE: A location estimating device in a wireless local area network (WLAN) environment and a method thereof are provided to efficiently reduce the computational complexity of a periodically configured access point (AP) group by using an AP group configuration part and a candidate AP configuration part. CONSTITUTION: An AP group configuration part (20) periodically configures an AP group having a smallest Cramer-Rao bound (CRB) value among candidate AP groups. Each of the candidate AP groups includes APs of a previously configured AP group and a candidate AP. A candidate AP configuration part (30) periodically configures the candidate AP. The candidate AP configuration part sets an AP, which has a biggest Fisher information value among reception-enabled APs other than the APs of the AP group previously configured at the AP group configuration part, as the candidate AP. A location estimating part (40) periodically estimates locations by using the received signal intensity of APs in an AP group configured at the AP group configuration part. [Reference numerals] (10) Signal receiving part; (20) AP group configuration part; (30) Candidate AP configuration part; (40) Location estimating part

Abstract translation: 目的：提供无线局域网（WLAN）环境中的位置估计装置及其方法，通过使用AP组配置部分和候选AP配置来有效降低周期性配置的接入点（AP）组的计算复杂度 部分。 构成：AP组配置部件（20）周期性地配置候选AP组中具有最小Cramer-Rao绑定（CRB）值的AP组。 每个候选AP组包括先前配置的AP组和候选AP的AP。 候选AP配置部分（30）周期性地配置候选AP。 候选AP配置部分将在AP组配置部分之前配置的AP组以外的接收使能AP之中具有最大的Fisher信息值的AP设置为候选AP。 位置估计部分（40）通过使用在AP组配置部分配置的AP组中的AP的接收信号强度来周期性地估计位置。 （附图标记）（10）信号接收部; （20）AP组配置部分; （30）候选AP配置部分; （40）定位估计部

公开(公告)号：KR101957992B1

公开(公告)日：2019-03-13

申请号：KR1020180123976

申请日：2018-10-17

Applicant: 국방과학연구소

Inventor： 권대훈 ,  박주만 ,  최형석 ,  박찬이 ,  임혁 ,  김요한

IPC: H04L12/861 ,  H04L12/851 ,  H04L12/26

公开(公告)号：KR101367674B1

公开(公告)日：2014-02-28

申请号：KR1020120136936

申请日：2012-11-29

Applicant: 국방과학연구소

Inventor： 김갑진 ,  임혁 ,  김량수

IPC: G01S5/04

Abstract: The present invention relates to a wireless positioning system and more specifically, to a wireless positioning system for realizing a time difference of arrival (TDoA) wireless positioning algorithm using an ultra wideband (UWB) asynchronous reference node. According to the present invention, it is easy to extend a wireless positioning range because the positioning algorithm enabling accurate position measurement in a TDoA position measurement system using an asynchronous reference node capable of performing UWB communication does not require an external signal source or an additional algorithm for synchronization between reference nodes. [Reference numerals] (S400) Start (i=0); (S420) Acquire TDoA, RSS information from each reference node; (S430) Set prior target node position as initial position; (S440) Set initial position by RSS based positioning; (S450) Undetermined LSS estimator; (S460) Update target node coordinate; (S480) Confirm target node position (i=i+1)

Abstract translation: 无线定位系统技术领域本发明涉及一种无线定位系统，更具体地，涉及一种实现使用超宽带（UWB）异步参考节点的到达时差（TDoA）无线定位算法的无线定位系统。 根据本发明，由于能够使用能够执行UWB通信的异步参考节点的TDoA位置测量系统中能够进行精确位置测量的定位算法不需要外部信号源或附加算法，所以扩展无线定位范围是容易的 用于参考节点之间的同步。 （参考号）（S400）开始（i = 0）; （S420）从每个参考节点获取TDoA，RSS信息; （S430）将先前的目标节点位置设置为初始位置; （S440）通过基于RSS的定位设置初始位置; （S450）未确定的LSS估计器; （S460）更新目标节点坐标; （S480）确认目标节点位置（i = i + 1）