US 11,835,560 B2
Electromagnetic surveys with power transmission lines
Alex S. Miller, Cambridge, MA (US); Artem Goncharuk, Mountain View, CA (US); Allen Richard Zhao, Mountain View, CA (US); and Kevin Forsythe Smith, Pleasanton, CA (US)
Assigned to X Development LLC, Mountain View, CA (US)
Filed by X Development LLC, Mountain View, CA (US)
Filed on Jan. 27, 2023, as Appl. No. 18/160,651.
Claims priority of provisional application 63/304,125, filed on Jan. 28, 2022.
Prior Publication US 2023/0243880 A1, Aug. 3, 2023
Int. Cl. H01H 31/02 (2006.01); G01R 29/08 (2006.01); G01R 27/28 (2006.01); G01R 31/08 (2020.01); G01R 31/52 (2020.01); G01R 31/58 (2020.01); G01R 1/067 (2006.01); H04M 1/24 (2006.01); H04M 3/28 (2006.01); H04M 3/30 (2006.01)
CPC G01R 29/0842 (2013.01) [G01R 1/06788 (2013.01); G01R 27/28 (2013.01); G01R 29/0878 (2013.01); G01R 31/085 (2013.01); G01R 31/52 (2020.01); G01R 31/58 (2020.01); H04M 1/24 (2013.01); H04M 3/28 (2013.01); H04M 3/30 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method for generating a subsurface image comprising:
detecting a transient event in an electrical power line at two or more predetermined locations in the electrical power line;
detecting, at the two or more predetermined locations, an electrical signal induced in the power line by a return electromagnetic signal that is generated by eddy currents induced in the subsurface by the transient event; and
processing the detected electrical signal and transient event to generate a subsurface image.