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

Sensors

Yao Zhang¹  Shihua Sun¹  Yuhui Gao¹  Zhongliang Deng¹  Zhen Li¹ 

[1] School of Electronic Engineering, Beijing University of Post and Telecommunication, Beijing 100876, China;

关键词: ofdm;    lte;    preamble detect;    passive positioning;   

DOI  :  10.3390/s19204526

来源: DOAJ

【 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.

【 授权许可】

Unknown