US 12,405,367 B2
Systems and methods for noninvasive detection of impermissible objects
Hatch Graham, North Bend, WA (US); Ehsan Afshari, Ann Arbor, MI (US); Karl Triebes, Kirkland, WA (US); and Ryan Kearny, Kirkland, WA (US)
Assigned to Lassen peak, inc., North bend, WA (US)
Filed by Lassen Peak, Inc., North Bend, WA (US)
Filed on Apr. 28, 2021, as Appl. No. 17/243,563.
Claims priority of provisional application 63/161,323, filed on Mar. 15, 2021.
Claims priority of provisional application 63/143,880, filed on Jan. 31, 2021.
Claims priority of provisional application 63/134,373, filed on Jan. 6, 2021.
Claims priority of provisional application 63/126,312, filed on Dec. 16, 2020.
Claims priority of provisional application 63/043,779, filed on Jun. 25, 2020.
Prior Publication US 2021/0405179 A1, Dec. 30, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 13/88 (2006.01); G01S 7/03 (2006.01); G01S 7/35 (2006.01); G01S 13/42 (2006.01); G01S 13/89 (2006.01); G01S 13/02 (2006.01)
CPC G01S 13/887 (2013.01) [G01S 7/032 (2013.01); G01S 7/35 (2013.01); G01S 13/426 (2013.01); G01S 13/89 (2013.01); G01S 2013/0245 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method, comprising:
scanning a subject with a coherent radar beam from a radar system on a single chip that operates in a range of operation between approximately 0.1 terahertz and 1 terahertz, and that includes:
a transmitter having at least
a ramp generator electrically coupled to, and configured to provide a voltage signal to, a wide band voltage controlled oscillator,
a directional coupler electrically coupled to the wide band voltage controlled oscillator, and
a phased-array antenna electrically coupled to the directional coupler and configured to transmit high-frequency signals in the range of operation;
executing instructions, on a processor, to create one or more digital images based on said scanning;
combining, at the processor, the one or more digital images to form a super image;
determining, at the processor and based on the super image, whether the subject is carrying a concealed object;
if the subject is determined to be carrying a concealed object, determining, at the processor, whether the object meets certain rules for generating an alert;
generating the alert.