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Mobile Phone Passive Positioning through the Detection of Uplink Signals for Search and Rescue

机译:通过检测搜索和救援上行链路信号进行手机被动定位

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摘要

To satisfy the service requirements of high accuracy and efficient life detection and location for search and rescue (SAR) missions after a disaster, we developed a passive positioning method to locate mobile phones by capturing the random access preamble, which can be applied to fourth-generation (4G) and even fifth-generation (5G) communication systems. We analyzed the characteristics of the random access procedure of a communication system and established a way to detect mobile phones by combining the time-difference-of-arrival (TDOA) estimation to determine the location. Then, we performed an experiment and a simulation of preamble sequence acquisition, and the results proved that the method is feasible and has high detection accuracy in high-noise conditions.
机译:为满足灾难后高精度,高效的生命探测和搜救任务的服务需求,我们开发了一种被动定位方法,即通过捕获随机访问前导码来定位手机,该方法可应用于第四次(4G)甚至第五代(5G)通信系统。我们分析了通信系统随机访问过程的特征,并通过结合到达时间差(TDOA)估计来确定位置,从而建立了一种检测手机的方法。然后,对前同步码序列获取进行了实验和仿真,结果证明了该方法是可行的,在高噪声条件下具有较高的检测精度。

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