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    실내 정밀 측위 시스템 및 방법
    11.
    发明授权
    실내 정밀 측위 시스템 및 방법 有权
    室内精确位置确定系统与方法

    公开(公告)号：KR100769115B1

    公开(公告)日：2007-10-22

    申请号：KR1020060068267

    申请日：2006-07-21

    Applicant: 재단법인대구경북과학기술원

    Inventor： 이종훈 ,  김상동 ,  정우영

    IPC: G01S5/00

    Abstract: A system and a method for measuring an indoor position accurately are provided to track a position of an object by using a distance between the object and a sensor, and a distance between the sensor and another sensor. A system for measuring indoor position accurately includes a first sensor(21), a second sensor(22) and a position estimation unit(24). The first sensor(21) measures a distance R1 from a target object. The second sensor(22) is arranged at an interval of a distance D from the first sensor(21), and measures a distance R2 from the target object. The position estimation unit(24) estimates a position of the target object from the distances R1, R2 and D. When it is assumed that the first sensor(21) is located on a zero point, and the second sensor(22) is located on an X-axis, the position x,y of the target object estimated by the position estimation unit(24) is as follows: x=(R12+D2-R22)/2D, y={(2R2*R22+2R12*D2 +2R22*D2-R14-R24-D4)/4D2}1/2.

    Abstract translation: 提供了一种用于精确地测量室内位置的系统和方法，以通过使用物体和传感器之间的距离以及传感器与另一传感器之间的距离来跟踪物体的位置。 准确地测量室内位置的系统包括第一传感器（21），第二传感器（22）和位置估计单元（24）。 第一传感器（21）测量距目标对象的距离R1。 第二传感器（22）以与第一传感器（21）的距离D的间隔布置，并且测量距离目标物体的距离R2。 位置估计单元（24）从距离R1，R2和D估计目标对象的位置。当假设第一传感器（21）位于零点上时，第二传感器（22）位于 在X轴上，由位置估计单元（24）估计的目标对象的位置x，y如下：x =（R12 + D2-R22）/ 2D，y = {（2R2 * R22 + 2R12 * D2 + 2R22 * D2-R14-R24-D4）/ 4D2} 1/2。

    무선 센서 네트워크에서 TOA(time of arrival)를 이용한 무선 측위 장치 및 그 방법
    19.
    发明公开
    무선 센서 네트워크에서 TOA(time of arrival)를 이용한 무선 측위 장치 및 그 방법 无效
    在无线传感器网络中使用TOA（到达时间）的无线定位设备及其方法

    公开(公告)号：KR1020150042348A

    公开(公告)日：2015-04-21

    申请号：KR1020130120634

    申请日：2013-10-10

    Applicant: 재단법인대구경북과학기술원

    Inventor： 오대건 ,  김상동 ,  이종훈

    IPC: G01S5/04 ,  G01S5/00

    CPC classification number: G01S5/04 ,  G01S5/00 ,  G01S5/02 ,  G01S5/14 ,  G01S13/66

    Abstract: 본발명은무선센서네트워크에서 TOA(time of arrival)를이용한무선측위장치및 그방법에관한것이다. 본발명에따른무선측위장치는노드간에교환되는신호를수신하는신호수신부; 상기수신된신호를처리하여자기상관행렬을연산하는행렬연산부; 상기연산된자기상관행렬을고유벡터(eigenvector) 형태로변환하고행렬의놈(norm) 연산을이용하여가상스펙트럼을검출하는스펙트럼검출부; 및상기검출된가상스펙트럼의피크및 인덱스를검출하여 TOA 를예측하는 TOA 출력부를포함한다. 이와같이본 발명에따르면, 비동기 TWR 시스템의고성능의해상도를실현할수 있는알고리즘에의해 TOA를예측할수 있다. 또한, 본발명에따르면행렬의분해가불필요하여낮은복잡도의 TOA 예측알고리즘을구현할수 있다.

    Abstract translation: 无线传感器网络中使用TOA（到达时间）的无线定位装置技术领域本发明涉及使用无线传感器网络中的TOA（到达时间）的无线定位装置及其方法。 无线定位装置包括：信号接收器，接收在节点之间交换的信号; 矩阵运算符通过处理上述信号来计算自相关矩阵; 频谱检测部分，通过使用范数算术来检测虚拟频谱，并将自相关矩阵转换为特征向量格式; 以及TOA输出单元，通过提取检测到的虚拟频谱的峰值和索引来估计TOA。 根据本发明，可以通过实现异步TWR系统的高清晰度图像的算法来预测TOA。 此外，本发明可以实现具有低复杂度的TOA预测算法，不需要基质的溶解。

    레이더 신호의 주파수 추정 장치 및 그 방법
    20.
    发明授权
    레이더 신호의 주파수 추정 장치 및 그 방법 有权
    用于估计雷达信号频率的装置及其方法

    公开(公告)号：KR101449869B1

    公开(公告)日：2014-10-13

    申请号：KR1020130120632

    申请日：2013-10-10

    Applicant: 재단법인대구경북과학기술원

    Inventor： 김상동 ,  오대건 ,  이종훈

    IPC: G01S13/53 ,  G01S13/02 ,  G01R23/16

    Abstract: The present invention relates to a frequency estimating device of a radar signal and a method thereof. The frequency estimating device of the radar signal according to the present invention comprises; a step of repeating a radar transmission signal of the pulse type of N having a PRI interval M times per frame and discharging it to one or more targets and receiving a radar receiving signal; a step of sampling the radar receiving signal; a step of estimating a pulse in which a transformed value becomes a maximum value as an integer unit by Fourier-transforming the sampled radar receiving signal; an obtaining a power value of the radar receiving signal per frame; a step of obtaining a decimal unit using a Fourier transformation value of the radar receiving signal and estimating the decimal unit by Fourier-transforming an obtained decimal unit value repeatedly; a step of measuring a final decimal unit using the estimated decimal unit and the power value; and a step of obtaining an estimating frequency of the radar receiving signal using the integer unit and the final decimal unit. According to the present invention as above, a Doppler frequency can be estimated accurately under a low SNR condition by estimating a weighted average Doppler frequency. Especially, the present invention has an excellent performance in comparison with a frequency estimating method according to a traditional technology because a signal received in an excellent SNR has a high weighted value.

    Abstract translation: 本发明涉及雷达信号的频率估计装置及其方法。 根据本发明的雷达信号的频率估计装置包括： 重复每帧具有PRI间隔M次的脉冲类型的雷达传输信号的步骤，并将其放电到一个或多个目标并接收雷达接收信号; 对雷达接收信号进行采样的步骤; 通过对取样的雷达接收信号进行傅立叶变换来估计变换值变为最大值的脉冲作为整数单位的步骤; 获得每帧雷达接收信号的功率值; 使用雷达接收信号的傅立叶变换值获得十进制单位，并通过对所获得的十进制单位值进行反复傅立叶变换来估计小数单位的步骤; 使用估计的小数单位和功率值来测量最终小数单位的步骤; 以及使用整数单位和最终十进制单位来获得雷达接收信号的估计频率的步骤。 根据如上所述的本发明，通过估计加权平均多普勒频率，可以在低SNR条件下准确地估计多普勒频率。 特别地，本发明与根据传统技术的频率估计方法相比具有优异的性能，因为以良好SNR接收的信号具有高加权值。

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