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Ultra-Wideband Time-Difference-of-Arrival High Resolution 3D Proximity Tracking System

机译:超宽带到达时间差高分辨率3D接近跟踪系统

摘要

This paper describes a research and development effort for a prototype ultra-wideband (UWB) tracking system that is currently under development at NASA Johnson Space Center (JSC). The system is being studied for use in tracking of lunar./Mars rovers and astronauts during early exploration missions when satellite navigation systems are not available. U IATB impulse radio (UWB-IR) technology is exploited in the design and implementation of the prototype location and tracking system. A three-dimensional (3D) proximity tracking prototype design using commercially available UWB products is proposed to implement the Time-Difference- Of-Arrival (TDOA) tracking methodology in this research effort. The TDOA tracking algorithm is utilized for location estimation in the prototype system, not only to exploit the precise time resolution possible with UWB signals, but also to eliminate the need for synchronization between the transmitter and the receiver. Simulations show that the TDOA algorithm can achieve the fine tracking resolution with low noise TDOA estimates for close-in tracking. Field tests demonstrated that this prototype UWB TDOA High Resolution 3D Proximity Tracking System is feasible for providing positioning-awareness information in a 3D space to a robotic control system. This 3D tracking system is developed for a robotic control system in a facility called "Moonyard" at Honeywell Defense & System in Arizona under a Space Act Agreement.
机译:本文介绍了美国国家航空航天局约翰逊航天中心(JSC)目前正在开发的原型超宽带(UWB)跟踪系统的研发工作。目前正在研究该系统,以便在没有卫星导航系统的早期探索任务中用于跟踪月球/火星漫游者和宇航员。 U IATB脉冲无线电(UWB-IR)技术被用于原型定位和跟踪系统的设计和实施中。提出了一种使用商用UWB产品的三维(3D)接近跟踪原型设计,以在这项研究工作中实现到达时间差(TDOA)跟踪方法。 TDOA跟踪算法用于原型系统中的位置估计,不仅可以利用UWB信号实现精确的时间分辨率,还可以消除发射机与接收机之间同步的需要。仿真表明,TDOA算法能够以低噪声TDOA估计实现近距离跟踪的精细跟踪分辨率。现场测试表明,该原型UWB TDOA高分辨率3D接近度跟踪系统对于向机器人控制系统提供3D空间中的定位感知信息是可行的。根据《太空法案》协议,此3D跟踪系统是为亚利桑那州霍尼韦尔防务与系统公司名为“ Moonyard”的设施中的机器人控制系统开发的。

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