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基于TDOA 定位的阵列布放结构研究
金博楠,徐晓苏,张涛,李瑶
0
(东南大学 仪器科学与工程学院 微惯性仪表与先进导航技术教育部重点实验室, 南京 210096)
摘要:
不同结构阵列在TDOA 定位中对定位精度有较大影响。为了掌握和减小阵列带来的影响,从TDOA 定位解算方程组的角度分析了平面阵列在空间定位中高度方向产生较大误差的原因;又从单个基线的角度分析了影响基线定位敏感度的因素,而为分析阵列定位效果提供了理论依据。然后对七种代表性的平面阵列进行对比,验证了阵列结构对定位精度的影响关系。根据平面阵列的经验又设计了三种空间阵列,通过仿真实验证明了对阵列结构研究的正确性。
关键词:  TDOA  阵列结构  传感器布放  长基线定位
DOI:
基金项目:国家自然科学基金(61473085,51175082,51375088,61273056)
Study of Array Structure for Sensor Placement in TDOA-Based Localization
JIN Bo-nan,XU Xiao-su,ZHANG Tao,LI Yao
(Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology of Ministry of Education, School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China)
Abstract:
Different sensor placements have a great influence on the accuracy in TDOA-based localization. In order to grasp and decrease the influence brought by the array, the causes of the large errors in the vertical direction are analyzed with TDOA localization equations when the planar array is used in the spatial orientation. Then, the factors affecting the localization sensitivity of the baseline are deduced from the perspective of a single baseline, which provides the theoretical basis for analyzing the positioning accuracy of the sensor arrays. Then the positioning errors of seven representative planar arrays are compared to verify the relationship between the array structure and the positioning accuracy. According to the application experience of planar array, three kinds of spatial sensor array placements are designed. The simulation results demonstrated the correctness of the study on array structure.
Key words:  TDOA  Array structure  Sensor placements  Long baseline localization

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