公开(公告)号：US11724787B2

公开(公告)日：2023-08-15

申请号：US16534038

申请日：2019-08-07

Applicant: Raytheon Company

Inventor： Thomas E. Wood ,  John R. Short

IPC: B63G8/08 ,  B63G7/08 ,  B63G8/00 ,  G01S5/02 ,  G01S15/89 ,  G05D1/06 ,  B63G7/00

CPC classification number: B63G8/08 ,  B63G7/08 ,  B63G8/001 ,  G01S5/0294 ,  G01S15/8981 ,  G05D1/0692 ,  B63G2007/005

Abstract: A method comprising: providing an autonomous vehicle (AV) with a first estimated position of a target; directing the AV to travel toward the first estimated position at a constant velocity; receiving echo signals of transmitted sonar signals, the echo signals indicating a range and an azimuth of the target; determining a depth difference of the AV and the target based on the received echo signals, the depth difference being determined based on changes to the range and azimuth of the target over time; and in response to a depth difference existing, re-directing the AV toward a second estimated position of the target generated from the depth difference.

公开(公告)号：US20210039762A1

公开(公告)日：2021-02-11

申请号：US16534038

申请日：2019-08-07

Applicant: Raytheon Company

Inventor： Thomas E. Wood ,  John R. Short

IPC: B63G8/08 ,  B63G8/00 ,  B63G7/08 ,  G05D1/06 ,  G01S5/02 ,  G01S15/89

Abstract: A method comprising: providing an autonomous vehicle (AV) with a first estimated position of a target; directing the AV to travel toward the first estimated position at a constant velocity; receiving echo signals of transmitted sonar signals, the echo signals indicating a range and an azimuth of the target; determining a depth difference of the AV and the target based on the received echo signals, the depth difference being determined based on changes to the range and azimuth of the target over time; and in response to a depth difference existing, re-directing the AV toward a second estimated position of the target generated from the depth difference.

公开(公告)号：US20190385746A1

公开(公告)日：2019-12-19

申请号：US16307817

申请日：2017-06-27

Applicant: RAYTHEON COMPANY

Inventor： Thomas E. Wood ,  James A. Wurzbach

IPC: G16H50/70 ,  G16H50/50 ,  G16H50/30 ,  G01S7/41

Abstract: Various aspects and examples are directed to methods and systems for interpolation in systems that execute non-linear quantization routines. Particular aspects of the methods described herein include a method of detecting a Radar Cross Section (RCS) and a method of detecting patient injuries. In one example, a method of detecting RCS includes receiving a sequence of samples at a re-visit rate of a radar antenna, the sequence of samples being based on electromagnetic energy reflected from a target, interpolating a model curve to the sequence of samples, where each sample of the sequence of samples geometrically increases in value relative to a previous sample of the sequence of samples, comparing the model curve to a calibrated curve and determining a shift between the model curve and the calibrated curve based on the comparison, and detecting a RCS based on the shift between the model curve and the calibrated curve.