公开(公告)号：US10386447B2

公开(公告)日：2019-08-20

申请号：US15268371

申请日：2016-09-16

Applicant: QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENT

Inventor： Ahmed Badawy ,  Tamer Khattab ,  Daniele Trinchero ,  Tarek Elfouly ,  Amr Mohamed

IPC: G01S3/38 ,  G01S3/06

Abstract: The method and apparatus for angle of arrival estimation are used for estimating the angle of arrival of a received signal by a switched beam antenna array and a single receiver. The switched beam antenna array first collects an omnidirectional signal to be used as a reference signal. A main beam thereof is then switched to scan an angular region of interest. The collected signals from the switched beams are cross-correlated with the reference signal. The cross-correlation coefficient is the highest at the true angle of arrival and relatively negligible otherwise. The collected signal from each beam angle is cross-correlated with the omnidirectional reference signal to determine the angle of arrival of the received signal.

公开(公告)号：US20230062506A1

公开(公告)日：2023-03-02

申请号：US17900275

申请日：2022-08-31

Applicant: Qatar University ,  Qatar Foundation for Education, Science and Community Development

Inventor： Ala Gouissem ,  Khalid Abualsaud ,  Elias Yaacoub ,  Tamer Khattab ,  Mohsen Guizani

IPC: G16H50/80 ,  H04W4/02 ,  H04W4/029 ,  H04W4/021

Abstract: A system for pandemic and connection tracking is provided. The system includes a memory and one or more processors in communication with the memory, and a data collector executing on the one or more processors. The data collector is configured to collect anonymous tracking data from a wireless sensor network. The wireless sensor network is configured to communicate with users' devices using a wireless connection. The system further includes a data validator/augmentor executing on the one or more processors. The data validator/augmentor is configured to validate the collected anonymous tracking data. The system also includes a virus spread tracker executing on the one or more processors. The virus spread tracker is configured to: estimate an exposure time between each pair of users based on the collected anonymous tracking data; and determine a probability of at least one of the users being infected based on the estimated exposure time.