Positioning system using radio frequency signals

Patent metadata

Field	Value
Publication number	US-8965641-B2
Application number	US-201213722179-A
Country	US
Kind code	B2
Filing date	Dec 20, 2012
Priority date	Sep 19, 2012
Publication date	Feb 24, 2015
Grant date	Feb 24, 2015

Abstract

A positioning system and method for determining a position of a machine are disclosed. The system may have an optical sensing device configured to generate determined shape data associated with a portion of the worksite at the position of the machine. The system may have a first signal device configured to transmit a radio frequency signal and receive a response signal. The system may have a second signal configured to receive the transmitted radio frequency signal and transmit the response signal. The system may have a controller in communication with the optical sensing device and at least one of the first and second signal devices. The controller may be configured to determine an approximate position based on the radio frequency signal and the response signal, identify a reference shape data corresponding to the determined shape data, and determine the position based on the approximate position and the reference shape data.

First claim

What is claimed is:

1. A system for determining a position of a machine at a worksite, comprising:
a first signal device configured to transmit one or more radio frequency signals and receive one or more response signals;
a second signal device configured to receive the one or more transmitted radio frequency signals and transmit the one or more response signals in response to receiving the one or more radio frequency signals,
wherein the first signal device is located on one o…

Assignees

• Caterpillar Inc

Inventors

• Smith David William
• Yates Richard Kent

Classifications

• G01S5/02585

  Physics · mapped topic

• G01S17/06

  Physics · mapped topic

• G01S17/88 Primary

  Physics · mapped topic

• G01C21/30

  Physics · mapped topic

• G01S13/74

  Physics · mapped topic