Timothy B Campbell

US Patent:

20220390550, Dec 8, 2022

Filed:

Nov 9, 2020

Appl. No.:

17/092665

Inventors:

- Mountain View CA, US
Timothy Campbell - Mountain View CA, US
Alessandro Temil - Mountain View CA, US

International Classification:

G01S 7/02
G01S 13/931

Abstract:

Example embodiments relate to methods and systems for implementing radar electronic support measure operations. A vehicle's processing unit may receive information relating to electromagnetic energy radiating in an environment of the vehicle that is detected using a vehicle radar system. The electromagnetic energy originated from one or more external emitters, such as radar signals transmitted by other vehicles. The processing unit may determine a spectrum occupancy representation that indicates spectral regions occupied by the electromagnetic energy and subsequently adjust operation of the vehicle radar system based on the spectrum occupancy representation to reduce or mitigate interference with the external emitters in the vehicle's environment. In some examples, the vehicle radar system may be switched to a passive receive-only mode to measure the electromagnetic energy radiating in the environment from other emitters.

US Patent:

20220209415, Jun 30, 2022

Filed:

Dec 29, 2020

Appl. No.:

17/136393

Inventors:

- Mountain View CA, US
Timothy Campbell - Mountain View CA, US
Matthew Markel - Mountain View CA, US

International Classification:

H01Q 13/02
H01Q 1/32
H01Q 5/55

Abstract:

Example embodiments relate to low elevation side lobe antennas with fan-shaped beams. An example radar unit may include a radiating plate having a first side and a second side with an illuminator, a waveguide horn, a waveguide opening, and a radiating sleeve extending into the first side of the radiating plate. The waveguide opening is positioned on the first end of the first side and the radiating sleeve is positioned on the second end of the first side. The radar unit also includes a metallic cover coupled to the first side of the radiating plate such that the metallic cover and the radiating plate form waveguide structures. The waveguide horn is configured to receive, from an external source, electromagnetic energy provided through the waveguide opening via a first waveguide and provide a portion of the electromagnetic energy to the illuminator via a second waveguide such that the portion of the electromagnetic energy radiates off the illuminator and through the radiating sleeve into an environment of the radar unit as one or more radar signals.

US Patent:

20230017983, Jan 19, 2023

Filed:

Jul 19, 2021

Appl. No.:

17/379696

Inventors:

- Mountain View CA, US
Timothy Campbell - Mountain View CA, US

International Classification:

G01S 7/292
G01S 13/86
G01S 13/931
G01S 13/58
G01S 7/295

Abstract:

Example embodiments relate to radar reflection filtering using a vehicle sensor system. A computing device may detect a first object in radar data from a radar unit coupled to a vehicle and, responsive to determining that information corresponding to the first object is unavailable from other vehicle sensors, use the radar data to determine a position and a velocity for the first object relative to the radar unit. The computing device may also detect a second object aligned with a vector extending between the radar unit and the first object. Based on a geometric relationship between the vehicle, the first object, and the second object, the computing device may determine that the first object is a self-reflection of the vehicle caused at least in part by the second object and control the vehicle based on this determination.

US Patent:

20210156984, May 27, 2021

Filed:

Feb 4, 2021

Appl. No.:

17/167175

Inventors:

- Mountain View CA, US
Timothy Campbell - Mountain View CA, US

International Classification:

G01S 13/42
H01Q 1/32
G05D 1/02
G01S 13/89
G01S 13/931
G01S 13/87
H01Q 21/00
G01S 13/44
G01S 7/03
G01S 13/90

Abstract:

Example embodiments described herein involve determining three dimensional data representative of an environment for an autonomous vehicle using radar. An example embodiment involves receiving radar reflection signals at a radar unit coupled to a vehicle and determining an azimuth angle and a distance for surfaces in the environment causing the radar reflection signals. The embodiment further involves determining an elevation angle for the surfaces causing the radar reflection signals based on phase information of the radar reflection signals and controlling the vehicle based at least in part on the azimuth angle, the distance, and the elevation angle for the surfaces causing the plurality of radar reflection signals. In some instances, the radar unit is configured to receive radar reflection signals using a staggered linear array with one or multiple radiating elements offset in the array.

US Patent:

20210096238, Apr 1, 2021

Filed:

Oct 16, 2020

Appl. No.:

17/072523

Inventors:

- Mountain View CA, US
Russell Smith - Mountain View CA, US
Timothy Campbell - Mountain View CA, US
Adam Brown - Mountain View CA, US

International Classification:

G01S 13/86
G01S 13/90
G01S 13/931
H01Q 21/00
H01Q 1/32
H01Q 13/06
H01P 5/12
H01P 5/18
H01Q 21/06

Abstract:

A radar system includes a split-block assembly unit comprising a first portion and second portion, where the first portion and the second portion form a seam. The radar system further includes a plurality of ports located on a bottom side of the second portion opposite the seam. Additionally, the radar system includes a plurality of radiating elements located on a top side of the first portion opposite the seam. The plurality of radiating elements is arranged in a plurality of arrays. The plurality of arrays includes a set of multiple-input multiple-output (MIMO) transmission arrays, a set of synthetic aperture radar (SAR) transmission arrays, and at least one reception array. Further, the radar system includes a set of waveguides configured to couple each array to a port.

US Patent:

20210063566, Mar 4, 2021

Filed:

Aug 28, 2019

Appl. No.:

16/554500

Inventors:

- Mountain View CA, US
Filip Perich - Mountain View CA, US
Timothy Campbell - Mountain View CA, US
Michael Marx - Mountain View CA, US

International Classification:

G01S 13/93
G06K 9/00

Abstract:

A method is provided that includes a vehicle receiving data from an external computing device indicative of at least one other vehicle in an environment of the vehicle. The vehicle may include a sensor configured to detect the environment of the vehicle. The at least one other vehicle may include at least one sensor. The method also includes determining a likelihood of interference between the at least one sensor of the at least one other vehicle and the sensor of the vehicle. The method also includes initiating an adjustment of the sensor to reduce the likelihood of interference between the sensor of the vehicle and the at least one sensor of the at least one other vehicle responsive to the determination.

US Patent:

20200309942, Oct 1, 2020

Filed:

Mar 31, 2019

Appl. No.:

16/371080

Inventors:

- Mountain View CA, US
Larry Smith - Mountain View CA, US
Timothy Campbell - Mountain View CA, US

International Classification:

G01S 13/86
G01S 13/93
G01S 7/40

Abstract:

Disclosed are systems and methods that may be used for determining areas free of objects around a vehicle. The systems and methods include receiving first sensor data from a first sensor having a first field of view and a first range. The systems and methods also include receiving second sensor data from a second sensor having a second field of view and a second range. The systems and methods also include determining, by a processor, a first-sensor occlusion in the first field of view. The systems and methods further include determining, by the processor, an occlusion free-region of the first field of view based on data from the second sensor. Additionally, the systems and methods include operating, by the processor, the vehicle in an autonomous mode based on determining the occlusion free-region.

US Patent:

20190195998, Jun 27, 2019

Filed:

Dec 22, 2017

Appl. No.:

15/852501

Inventors:

- Mountain View CA, US
Timothy Campbell - Mountain View CA, US

International Classification:

G01S 13/42
H01Q 1/32
G05D 1/02
G01S 13/89
G01S 13/93
G05D 1/00

Abstract:

Example embodiments described herein involve determining three dimensional data representative of an environment for an autonomous vehicle using radar. An example embodiment involves receiving radar reflection signals at a radar unit coupled to a vehicle and determining an azimuth angle and a distance for surfaces in the environment causing the radar reflection signals. The embodiment further involves determining an elevation angle for the surfaces causing the radar reflection signals based on phase information of the radar reflection signals and controlling the vehicle based at least in part on the azimuth angle, the distance, and the elevation angle for the surfaces causing the plurality of radar reflection signals. In some instances, the radar unit is configured to receive radar reflection signals using a staggered linear array with one or multiple radiating elements offset in the array.