公开(公告)号：US12092718B2

公开(公告)日：2024-09-17

申请号：US17603401

申请日：2020-04-16

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Mohammed Hussain Alsharif ,  Tareq Yousef Alnaffouri ,  Mohamed Saadeldin ,  Mohamed Siala

IPC: H04J13/00 ,  G01S3/808 ,  G01S11/14 ,  G01S15/74

CPC classification number: G01S11/14 ,  G01S3/808 ,  G01S15/74 ,  H04J13/0062

Abstract: A method for estimating a range of a moving target, the method including emitting, from a target, a first ultrasound signal T, wherein the first ultrasound signal T is generated based on a first differential Zadoff-Chu sequence x; receiving, at a receiver, a second ultrasound signal R, which corresponds to the first ultrasound signal T, wherein the second ultrasound signal R includes a second differential Zadoff-Chu sequence y; correlating the first ultrasound signal T with the second ultrasound signal R to calculate an initial time of flight estimate taucorr; and calculating an initial range estimate dcorr by multiplying the initial time of flight estimate taucorr with a speed of sound c. A differential Zadoff-Chu sequence is different from a Zadoff-Chu sequence.