TY  - JOUR
PY  - 2019//
TI  - Mobile phone passive positioning through the detection of uplink signals for search and rescue
JO  - Sensors (Basel)
A1  - Gao, Yuhui
A1  - Deng, Zhongliang
A1  - Zhang, Yao
A1  - Sun, Shihua
A1  - Li, Zhen
SP  - s19204526
EP  - s19204526
VL  - 19
IS  - 20
N2  - 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.<p />  <p>Language: en</p>
LA  - en
SN  - 1424-8220
UR  - http://dx.doi.org/10.3390/s19204526
ID  - ref1
ER  -