Transmitting location information of a beacon

• US 9,164,178 B2
• Filed: 02/26/2010
• Issued: 10/20/2015
• Est. Priority Date: 02/26/2009
• Status: Active Grant

• Current Assignee: Raytheon Command and Control Solutions LLC (Rtx Corporation)
• Original Assignee: Thales-Raytheon Systems Company LLC (Rtx Corporation)
• Inventors: Nichols, Thomas S., Reyes, Hector M. Jr.
• Primary Examiner(s): Issing, Gregory C
• Assistant Examiner(s): Mull, Fred H
• Application Number:
  US12/713,785
• Publication Number:
  US 20100214163A1
• Time in Patent Office: 2,062 Days
• Field of Search: 342385-386, 342/357.55, 342/357.56, 342/450, 342/458, 342/56, 342/133, 342139-144, 342/146, 342/59, 342/126, 244 315- 316, 89/11.1
• US Class Current: 1/1
• CPC Class Codes: G01S 13/42 Simultaneous measurement of distance and other co-ordinates indirect measurement G01S13/46
• CPC Class Codes: G01S 19/18 Military applications
• CPC Class Codes: G01S 19/41 Differential correction, e.g. DGPS [differential GPS]
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: G01S 5/0284 Relative positioning

Abstract

According to one embodiment of the present invention, determining the location of a target of interest includes determining a beacon location of the beacon. The beacon location is transmitted to a sensor. The sensor is operable to determine a sensor location of the sensor. The sensor is further operable to determine a target location of the target according to the beacon location and the sensor location. The target location is distinct from the beacon location.

Claims

1. A method of locating a target, comprising:

determining, with a sensor, a sensor location of the sensor;

receiving, by the sensor, a transmission from a beacon, the beacon comprising;

a location device operable to determine the beacon location of the beacon, and

one or more transmitters operable to transmit the beacon location to the sensor,

wherein the transmission comprises the beacon location;

measuring, by the sensor, one or more location attributes of the beacon;

determining, by the sensor, a target location of a target, wherein the sensor;

performs a target location measurement by sending and receiving reflected radiation and without receiving a transmission from the target,

calculates a correction factor from a difference in the measured one or more location attributes of the beacon and the beacon location as transmitted to the sensor by the beacon, and

applies the correction factor to the target location measurement to obtain a corrected target location measurement, wherein the target location, the sensor location, and the beacon location are distinct from one another.

2. The method of claim 1, deploying the beacon at the beacon location by a deployment mechanism.

3. The method of claim 1, the method further comprising receiving information from one or more GPS satellites to determine the beacon location.

4. The method of claim 1, the method further comprising transmitting the beacon location using a radio frequency signal.

5. The method of claim 1, the method further comprising transmitting the beacon location using a laser signal.

6. The method of claim 1, the method further comprising transmitting the beacon location using an infrared signal.

7. The beacon of claim 1, the method further comprising transmitting the beacon location independently of a request for the beacon to transmit the beacon location.

8. The method of claim 1, the method further comprising transmitting the beacon location in response to a request for the beacon to transmit the beacon location.

9. The method of claim 1, the sensor operable to determine the correction factor by:

measuring a location of the beacon; and

determining the correction factor from a difference in the measured location of the beacon and the beacon location transmitted by the beacon.