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公开(公告)号：KR101750900B1
公开(公告)日：2017-06-30
申请号：KR1020100132218
申请日：2010-12-22
Applicant: 충남대학교산학협력단
Abstract: 본발명은 AGPS 수신기를위한잔여주파수추정기에있어서, AGPS 수신기에도플러주파수를추정하기위한별도의센서없이도잔여주파수를성분을추정하여보상할수 있도록하는잔여주파수추정기를추가함으로써, 동기와비동기혼합누적기법을사용하는 AGPS 수신기에서동기적분과비동기적분시 발생하는손실을최소화하며잔여주파수추정을통해 GPS 신호의세기가낮은지역에서도신호를보다신뢰성있게검출할수 있도록한다.
Abstract translation: 本发明中，通过在残留频率估计添加，以确保能够估计残余的频率分量，而不需要一个单独的传感器用于估计多普勒频率并补偿AGPS接收器的基团估计残留频率为AGPS接收机，同步和异步混合堆叠技术 在本文中，我们提出了一种使用AGPS接收机检测AGPS接收机的新方法。
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公开(公告)号：KR101857122B1
公开(公告)日：2018-05-14
申请号：KR1020100130194
申请日：2010-12-17
Applicant: 한국전자통신연구원 , 충남대학교산학협력단
IPC: G05D1/02
CPC classification number: G05D1/0282 , G05D1/0278 , G05D1/0291
Abstract: 종래에는, 비정형환경하에서이동하는로봇, 예컨대실외에서실내로이동하는로봇이 GPS를수신할수 없는실내의음역지역으로이동하는상황에서는측위가어려워진다는문제가있다. 이에본 발명의실시예에서는, 비정형환경하에서이동하는로봇들간의통신을통하여애드-혹메시(ad-hoc mesh) 네트워크를구성하고, 로봇간의상대측위와로봇제어를통하여음영지역에서도위치측위가가능한시스템을구성하는실내외심리스(seamless) 무선위치측위기술을제안하고자한다.
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公开(公告)号：KR1020120070772A
公开(公告)日：2012-07-02
申请号：KR1020100132218
申请日：2010-12-22
Applicant: 충남대학교산학협력단
CPC classification number: G01S19/31 , G01R23/02 , G01S19/05 , G01S19/25 , G01S19/254 , G01S19/35 , G01S19/42
Abstract: PURPOSE: A residual frequency estimator is provided to minimize loss caused in an AGPS(Assisted Global Positioning System) receiver during synchronous integration and asynchronous integration and more reliably detect signals in a region with low intensity of GPS signals. CONSTITUTION: A plurality of correlators(104) divides data bit stream of a received signal by a predetermined cycle and outputs the divided signals. An FFT unit(108) receives data bit streams of regular length output from the correlators and implements FFT(Fast Fourier Transform). An asynchronous accumulator(110) asynchronously accumulates the FFT-processed bit streams. A coarse residual frequency estimator(114) searches the maximum value exceeding a predetermined threshold from the frequencies of the asynchronously accumulated signals and calculates an estimated residual frequency. A fine residual frequency estimator(116) computes the estimated residual frequency through MLE(Maximum Likelihood Estimation) to obtain the final estimated residual frequency.
Abstract translation: 目的：提供一个残余频率估计器，以在同步整合和异步集成期间最大限度地减少AGPS（辅助全球定位系统）接收机造成的损耗，并更可靠地检测GPS信号强度低的区域中的信号。 构成：多个相关器（104）将接收信号的数据比特流除以预定的周期，并输出划分的信号。 FFT单元（108）从相关器接收经常长度输出的数据比特流，并实现FFT（快速傅里叶变换）。 异步累加器（110）异步地累积经FFT处理的比特流。 粗残余频率估计器（114）根据异步累积信号的频率搜索超过预定阈值的最大值，并计算估计的残差频率。 精细残余频率估计器（116）通过MLE（最大似然估计）计算估计的残余频率，以获得最终估计的残余频率。
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公开(公告)号：KR1020120068531A
公开(公告)日：2012-06-27
申请号：KR1020100130194
申请日：2010-12-17
Applicant: 한국전자통신연구원 , 충남대학교산학협력단
IPC: G05D1/02
CPC classification number: G05D1/0282 , G05D1/0278 , G05D1/0291 , G01S19/11 , G01S19/23 , G01S19/31 , G01S19/42
Abstract: PURPOSE: A seamless location determination system and method are provided to grasp the real-time location of robots through interior and exterior high accuracy determination of a mobile robot. CONSTITUTION: A mobile node group receives GPS information from a GPS satellite. A broadband communications network(30) provides broadband communications environment of the mobile node group. A controlling gear(40) monitors the location of mobile node group through the broadband communications network in real time. The mobile node group comprises a mother node(100) and a child node. A broadband communications interface is loaded in the mother node. The mother node executes broadband communications with the controlling gear. The child node constitutes a cluster of mother node base.
Abstract translation: 目的：提供无缝定位系统和方法，通过内部和外部高精度确定移动机器人来掌握机器人的实时位置。 规定：移动节点组从GPS卫星接收GPS信息。 宽带通信网络（30）提供移动节点组的宽带通信环境。 控制齿轮（40）通过宽带通信网络实时监控移动节点组的位置。 移动节点组包括母节点（100）和子节点。 宽带通信接口加载到母节点。 母节点与控制装置执行宽带通信。 子节点构成母节点群。
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