Sensors, Vol. 19, Pages 4526: Mobile Phone Passive Positioning through the Detection of Uplink Signals for Search and Rescue

Sensors, Vol. 19, Pages 4526: Mobile Phone Passive Positioning through the Detection of Uplink Signals for Search and Rescue
Sensors doi: 10.3390/s19204526
Authors:
Gao
Deng
Zhang
Sun
Li

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.

Source: Sensors - October 16, 2019 Category: Biotechnology Authors: Gao Deng Zhang Sun Li Tags: Article Source Type: research