公开(公告)号：US20200088754A1

公开(公告)日：2020-03-19

申请号：US16131573

申请日：2018-09-14

Applicant: Booz Allen Hamilton Inc.

Inventor： William MacLeod ,  James Ter Beest ,  Gideon Bass

IPC: G01P3/44 ,  G01T1/29 ,  G06F17/30 ,  G01V3/36

Abstract: Disclosed is a system for updating a reference time from a decaying rotational period of a pulsar. The system can include: a database (DB) configured to store: coordinates for a pulsar; a recorded rate of rotation (RROR) for the pulsar; a rotational rate of decay (RROD) function for the pulsar; and a recorded reference time for the pulsar. A sensor can be configured to collect electromagnetic pulsar radiation from the pulsar and generate sensor data. A signal processor module can be configured to receive the sensor data, generate an observed rate of rotation (OROR) signal profile, generate a current rate of rotation (CROR) for the pulsar from the OROR signal profile, and update the RROR from the CROR. A time processor module can be configured to receive the RROD function and the CROR, and to solve the RROD function to output a reference time of the pulsar.

公开(公告)号：US10802036B2

公开(公告)日：2020-10-13

申请号：US16131573

申请日：2018-09-14

Applicant: Booz Allen Hamilton Inc.

Inventor： William MacLeod ,  James Ter Beest ,  Gideon Bass

IPC: G01P3/44 ,  G01V3/36 ,  G01T1/29 ,  G06F16/23

Abstract: Disclosed is a system for updating a reference time from a decaying rotational period of a pulsar. The system can include: a database (DB) configured to store: coordinates for a pulsar; a recorded rate of rotation (RROR) for the pulsar; a rotational rate of decay (RROD) function for the pulsar; and a recorded reference time for the pulsar. A sensor can be configured to collect electromagnetic pulsar radiation from the pulsar and generate sensor data. A signal processor module can be configured to receive the sensor data, generate an observed rate of rotation (OROR) signal profile, generate a current rate of rotation (CROR) for the pulsar from the OROR signal profile, and update the RROR from the CROR. A time processor module can be configured to receive the RROD function and the CROR, and to solve the RROD function to output a reference time of the pulsar.