US 12,007,500 B2
Method and system for self-calibrating a scanning system using inertial measurement spatial and temporal data
Rakesh Sethi, Saratoga, CA (US)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK Corporation, Tokyo (JP)
Filed on Jun. 21, 2021, as Appl. No. 17/353,041.
Prior Publication US 2022/0404459 A1, Dec. 22, 2022
Int. Cl. G01S 7/40 (2006.01); B60G 17/019 (2006.01); G01B 5/24 (2006.01); G01S 7/481 (2006.01); G01S 7/497 (2006.01); G01S 13/86 (2006.01); G01S 13/89 (2006.01); G01S 13/931 (2020.01); G01S 17/89 (2020.01); G01S 17/931 (2020.01)
CPC G01S 7/40 (2013.01) [B60G 17/019 (2013.01); G01B 5/24 (2013.01); G01S 7/4817 (2013.01); G01S 7/497 (2013.01); G01S 13/865 (2013.01); G01S 13/89 (2013.01); G01S 13/931 (2013.01); G01S 17/89 (2013.01); G01S 17/931 (2020.01); B60G 2400/82 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A self-calibrating scanning system comprising:
an energy transmission source configured to transmit transmittal energy signal through a transmittal area;
a detector configured to receive a return energy signal of at least one target object of the energy transmission source within the transmittal area;
a first inertial measurement unit (IMU) in proximity to the energy transmission source, the first IMU configured to measure a first displacement of the detector relative to the energy transmission source;
a second IMU configured to measure a second displacement of the detector relative to ground; and
a processor configured to execute a set of instructions to:
calculate initial position data of the at least one target object from information relating to at least one of a time and phase of the return energy signal relative to the transmittal energy signal;
calculate adjusted position data of the at least one target object by adjusting the initial position data based on the first displacement of the detector and the second displacement of the detector; and
generate a map of the transmittal area, the map including a location of the at least one target object based on the adjusted position data.