复平面子空间分解的TOA无线定位方法  

Subspace Approach in Complex Plane for Mobile Positioning with Time-of-Arrival Measurements

作　　者：李万春[1] 魏平[1] 肖先赐[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《电子科技大学学报》2010年第3期361-363,共3页Journal of University of Electronic Science and Technology of China

基　　金：教育部新世纪优秀人才计划(NCET-05-0803)

摘　　要：提出了一种利用复平面对二维移动站定位进行建模的方法,将到达时间信息转化为复数求模,通过代数运算,利用子空间的方法对目标进行定位,再利用蜂窝站址的旋转不变性对定位解进行融合,推导了复平面下TOA定位的克拉美界(CRB)。通过计算机仿真证明该方法具有较好的定位性能,在TOA测量精度较高时能够达到CRB界,有较好的应用价值。A new 2-D location method for modeling the mobile station location in complex plane is proposed.This mothod transforms the TOA into complex amplitude and then locates the target by subspace methods.The rotation invariance of cellular station positioning is used for location fusion and the CRB of TOA-based location is derived.Computer simulation shows the efficiency of the proposed method.It can attain the CRB when TOA is accurately estimated and shows a good application value.

关 键 词：复平面 信息融合 子空间分解 TOA定位 

分 类 号：TN713[电子电信—电路与系统]