公开(公告)号：US10921180B2

公开(公告)日：2021-02-16

申请号：US14885289

申请日：2015-10-16

Applicant: Raytheon BBN Technologies Corp.

Inventor： Ronald Bruce Coleman ,  Richard James Mullen ,  Jeffrey Mazurek

IPC: G01J1/42 ,  G01J1/02 ,  G01S5/16

Abstract: Infrared sensing systems having improved vibration cancelation, and methods of achieving improved vibration cancelation. In one example, an infrared sensing system includes an infrared sensor configured to produce a sensor output signal representative of a response of the infrared sensor to infrared excitation and vibration excitation, an accelerometer configured to provide an acceleration signal responsive to the vibration excitation, and a controller, including an adaptive digital filter, coupled to the infrared sensor and to the accelerometer, and configured to receive the acceleration signal and to adjust coefficients of the adaptive digital filter so as to minimize coherence between a residual signal and the acceleration signal, the residual signal being a difference between the sensor output signal and a filter output signal from the adaptive digital filter.

公开(公告)号：US20170108373A1

公开(公告)日：2017-04-20

申请号：US15337250

申请日：2016-10-28

Applicant: Raytheon BBN Technologies Corp.

Inventor： Ronald Bruce Coleman ,  Richard James Mullen ,  Jeffrey Mazurek

IPC: G01J1/02 ,  G01J1/42 ,  G01P15/00

CPC classification number: G01P15/00 ,  G01J1/0295 ,  G01J1/42

Abstract: Optical sensing systems having improved vibration cancelation, and methods of achieving improved vibration cancelation. In one example, an optical sensing system includes an optical sensor configured to produce an unprocessed sensor output signal representative of a response of the optical sensor to at least an optical signature of interest and a local vibration excitation, a reference sensor configured to provide a reference signal responsive to the local vibration excitation, and a controller, including an adaptive digital filter, coupled to the optical sensor and to the reference sensor, and configured to receive the reference signal and to adjust one or more coefficients of the adaptive digital filter to minimize coherence between a residual signal and the reference signal, the residual signal being a difference between the sensor output signal and a filter output signal from the adaptive digital filter.

公开(公告)号：US20170108374A1

公开(公告)日：2017-04-20

申请号：US14885289

申请日：2015-10-16

Applicant: Raytheon BBN Technologies Corp.

Inventor： Ronald Bruce Coleman ,  Richard James Mullen ,  Jeffrey Mazurek

IPC: G01J1/02

CPC classification number: G01J1/0295 ,  G01J1/42

Abstract: Infrared sensing systems having improved vibration cancelation, and methods of achieving improved vibration cancelation. In one example, an infrared sensing system includes an infrared sensor configured to produce a sensor output signal representative of a response of the infrared sensor to infrared excitation and vibration excitation, an accelerometer configured to provide an acceleration signal responsive to the vibration excitation, and a controller, including an adaptive digital filter, coupled to the infrared sensor and to the accelerometer, and configured to receive the acceleration signal and to adjust coefficients of the adaptive digital filter so as to minimize coherence between a residual signal and the acceleration signal, the residual signal being a difference between the sensor output signal and a filter output signal from the adaptive digital filter.