# US 12,000,924 B2 · Systems and methods for noninvasive detection of impermissible objects > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,000,924 B2 - Document ID: US12000924B2 - Status: Granted - Kind: B2 - Application number: 17/515,421 - Filed: 2021-10-30 - Published: 2022-07-07 - Granted: 2024-06-04 - Earliest claimed: 2021-01-06 - Assignees: Lassen Peak, Inc. - Applicants: Lassen Peak, Inc. - Inventors: Hatch Graham; Ehsan Afshari; Karl Triebes; Ryan Kearny - Web page: https://patentgrep.com/patent/US12000924B2 ## CPC - G01S 13/887: {for detection of concealed objects, e.g. contraband or weapons} - G01S 7/003: {Transmission of data between radar, sonar or lidar systems and remote stations} - G01S 7/032: {Constructional details for solid-state radar subsystems} - G01S 13/89: for mapping or imaging - G01V 3/12: operating with electromagnetic waves {(operating with millimetre waves G01V8/005)} - G01V 8/005: {operating with millimetre waves, e.g. measuring the black losey radiation} - G08B 5/22: using electric transmission; using electromagnetic transmission - G01S 7/352: {Receivers} - G01S 13/56: for presence detection {(presence detection using near field arrangements G01V3/00, e.g. G01V3/08, G01V3/12; burglar, theft or intruder alarms with electrical actuation G08B13/22 - G08B13/26)} - G01S 13/86: Combinations of radar systems with non-radar systems, e.g. sonar, direction finder - G01S 13/867: {Combination of radar systems with cameras} - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02) - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS ## Abstract An apparatus comprises a first and second coherent radar system on a first chip configured to operate in a terahertz range to provide a frequency modulated continuous wave, and having a first and second field of view, respectively. The apparatus further comprises a first processor in communication with the first coherent radar system and configured to include instructions to send a first signal to the first coherent radar system to scan a target with the first field of view, and a second processor in communication with the second coherent radar system and configured to collaborate with the first processor, and further configured to include instructions to send a second signal to the second coherent radar system to scan a target within the second field of view. ## Claims ### Claim 1 A method comprising: scanning, by a first coherent radar system, including a first phased array antenna, on a first chip configured to provide a frequency modulated continuous wave in a terahertz range, a first field of view; receiving a signal, at a second coherent radar system, including a second phased array antenna, on a second chip configured to provide a frequency modulated continuous wave in the terahertz range, to initiate a scan in a second field of view, the signal being based on the scanning by the first coherent radar system; scanning, in the terahertz range, the second field of view; transmitting, to a central management area, a data set based on the scanning of the first field of view and the second field of view; determining, based on at least one of the scanning of the first field of view or the second field of view, whether an object exists on a target; creating a user alert in response to the object being determined to exist on the target. ### Claim 2 (depends on 1) The method of claim 1, wherein the terahertz range is between 0.1 THz and 1 THz, inclusive. ### Claim 3 (depends on 2) The method of claim 2, further comprising: receiving, at the first coherent radar system, an activation signal to activate a scan mode of the first field of view; wherein the activation signal is based on a detection event, the detection event including at least one of a human form determined to be within the first field of view a motion detected in the first field of view; a sound detected within an audio reception distance of the first coherent radar system, a predetermined time occurring, or a signal received from an external source. ### Claim 4 (depends on 3) The method of claim 3, wherein the data set includes at least one of metadata or image data. ### Claim 5 (depends on 2) The method of claim 2 wherein the user alert includes at least one of an alarm, a rendered image representation of the object, or a rendered image representation of the target. ### Claim 6 (depends on 5) The method of claim 5, further comprising: receiving the data set; and logging the received data set. ### Claim 7 A method comprising: scanning, by a coherent radar system that includes a phased array antenna on a chip that provides a frequency modulated continuous wave to scan in a terahertz range, a target; determining, at a processor in communication with the coherent radar system, whether the target is moving within a field of view of the coherent radar system; reorienting, in response to the determining whether a target is moving within the field of view, the coherent radar system to keep the target within the field of view; creating a scanning data set based on the scanning; determining, based on the scanning data set, whether an object is present on the target; transmitting an alert signal to create a user alert in response to the determining whether an object is present on the target. ### Claim 8 (depends on 7) The method of claim 7, wherein the terahertz range is between 0.1 THz and 1 THz, inclusive. ### Claim 9 (depends on 7) The method of claim 7, wherein the alert signal is sent to a central management area for at least one of storage or processing. ### Claim 10 (depends on 7) The method of claim 7, wherein the alert signal is configured to render an image on a user device. ### Claim 11 (depends on 7) The method of claim 7, further comprising determining when the target enters the field of view. ### Claim 12 (depends on 7) The method of claim 7, further comprising determining whether if the target has left the field of view. ### Claim 13 (depends on 12) The method of claim 12, wherein the coherent radar system is a first coherent radar system on a first chip, and wherein the phased array antenna is a first phased array antenna, and further comprising: scanning, by a second coherent radar system, including a second phased array antenna, on a second chip configured to scan in the terahertz range, the target. ### Claim 14 (depends on 13) The method of claim 13, further comprising: sending, to a central management area, a first data set based on the scanning by the first radar system; sending, to the central management area, a second data set based on the scanning by the second coherent radar system; activating an alert, the alert being based on at least one of the first data set or the second data set. ### Claim 15 An apparatus comprising: a first coherent radar system, including a first phased array antenna, on a first chip configured to operate in a terahertz range to provide a frequency modulated continuous wave, and having a first field of view; a second coherent radar system, including a second phased array antenna, on a second chip configured to operate the terahertz range to provide a frequency modulated continuous wave, and having a second field of view; a first processor in communication with the first coherent radar system and configured to include instructions to: send a first signal to the first coherent radar system to scan a target with the first field of view; a second processor in communication with the second coherent radar system and configured to collaborate with the first processor, and further configured to include instructions to: send a second signal to the second coherent radar system to scan a target within the second field of view. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the terahertz range is between 0.1 THz and 1 THz, inclusive. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the first signal is based on a detection event, the detection event including at least one of a human form determined to be within the first field of view of the coherent radar system, a motion detected in the first field of view of the coherent radar system; a sound detected within an audio reception distance of the coherent radar system, a predetermined time occurring, or a signal received from an external source. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the first processor is further configured to send a data set to at least one of the second processor or a central management area. ### Claim 19 (depends on 18) The apparatus of claim 18, further comprising: a housing containing at least one of the first coherent radar system and second coherent radar system; and a gimbal configured to move the housing such that the target remains within at least one of the first field of view and the second field of view.