Patents-Review.com
ClassID:

172288 ⎘

G01S3/28 - CPC Classification

Classification description:

Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves; Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived simultaneously from receiving antennas or antenna systems having differently-oriented directivity characteristics

Sub-classes:
Recent Application in this class:
#1
20260023148
2026-01-22

DIRECTION FINDING SYSTEM BASED ON A LUNEBURG LENS DESIGN

 #2
20250306159
2025-10-02

SYSTEMS AND METHODS FOR AUTOMATIC DIRECTION FINDING

 #3
20250155538
2025-05-15

RADIO WAVE ARRIVAL DIRECTION ESTIMATION DEVICE AND RADIO WAVE ARRIVAL DIRECTION ESTIMATION METHOD

 #4
20230324493
2023-10-12

Method for finding signal direction using modal antenna

 #5
20230305137
2023-09-28

Devices and methods for selecting antennae for UWB ranging

 #6
20220334210
2022-10-20

Direction detection device, method of acquiring intensity difference table, direction detection method, and computer-readable storage medium

 #7
20220334209
2022-10-20

Direction detection device, method of acquiring intensity difference table, direction detection method, and computer-readable storage medium

 #8
20220236359
2022-07-28

COOPERATIVE AUTOMATIC TRACKING

 #9
20210399776
2021-12-23

Dynamic switch pattern selection for angle of arrival

 #10
20210364592
2021-11-25

System and method for determining the relative direction of an RF transmitter

 #11
20210349172
2021-11-11

System and method for determining the relative direction of an RF transmitter

 #12
20210311157
2021-10-07

Measuring circuit, measuring device, and program

 #13
20210190895
2021-06-24

Method for finding signal direction using modal antenna

 #14
20210124006
2021-04-29

METHOD AND APPARATUS FOR ESTIMATING ANGLE OF ARRIVAL OF SIGNALS IN WIRELESS COMMUNICATION SYSTEM

 #15
20210096207
2021-04-01

Angle of arrival using machine learning

 #16
20210080534
2021-03-18

System and method for determining the relative direction of an RF transmitter

 #17
20200400771
2020-12-24

Amplitude goniometer and associated platform

 #18
20200355778
2020-11-12

System and method for determining the relative direction of an RF transmitter

 #19
20200284868
2020-09-10

System and method for determining the relative direction of an RF transmitter

 #20
20200116813
2020-04-16

Device and method for unambiguous determination of angle of arrival for RF signals

 #21
20200072936
2020-03-05

Correlation sidelobe proximity screening

 #22
20200015030
2020-01-09

Positioning system and method utilizing normalized beacon signal strengths

 #23
20190235001
2019-08-01

Systems and methods of protecting equipment operators from electrocution

 #24
20190219664
2019-07-18

System and method for range and angle determination to an array of radio receivers

 #25
20190219656
2019-07-18

COOPERATIVE AUTOMATIC TRACKING

 #26
20190064308
2019-02-28

System and method for determining the relative direction of an RF transmitter

 #27
20190049546
2019-02-14

Position specifying device, transmitter, and non-transitory recording medium

 #28
20190007621
2019-01-03

Using unidirectional and omnidirectional antennas to determine whether object image is in camera viewfinder

 #29
20180348329
2018-12-06

Device and method for determining the position of a transmitter relative to a detection region

 #30
20180341001
2018-11-29

Apparatus and method for determining a position of a transmitter

 #31
20180279253
2018-09-27

System and method for determining location information for a mobile radio transmitter

 #32
20180267088
2018-09-20

Method for determining features of an electromagnetic wave

 #33
20180259611
2018-09-13

Method for finding signal direction using modal antenna

 #34
20180217248
2018-08-02

Positioning sensor, sensor, and method

 #35
20180191065
2018-07-05

System and method for fast system acquisition and channel estimation

 #36
20180076875
2018-03-15

METHOD AND APPARATUS FOR NON-LINEAR ANTENNA ARRAY ANGLE OF ARRIVAL DETECTION

 #37
20180074188
2018-03-15

Virtual angle-of-arrival/angle-of-departure tracking

 #38
20180045518
2018-02-15

Wireless receiver with tracking using location, heading, and motion sensors and adaptive power detection

 #39
20180038937
2018-02-08

Apparatus, system and method of determining a location of a radio beacon

 #40
20180031671
2018-02-01

Passive radar location of objects

 #41
20180024219
2018-01-25

AOA determination method and associated wireless communication device and radio base station

 #42
20180017657
2018-01-18

WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND ESTIMATION METHOD

 #43
20170363706
2017-12-21

Apparatus, system and method for finding direction

 #44
20170254873
2017-09-07

Vehicle trailer angle detection system using short range communication devices

 #45
20170248680
2017-08-31

INDICATING LOCATION OF A LOCK

 #46
20170184699
2017-06-29

Position sensor, direction estimation method, and system

 #47
20160231413
2016-08-11

APPARATUS AND METHOD OF ESTIMATING POSITION IN COMMUNICATION SYSTEM

 #48
20160103198
2016-04-14

System for and method of estimating bearings of radio frequency identification (RFID) tags that return RFID receive signals whose power is below a predetermined threshold

 #49
20160018506
2016-01-21

Measuring device and measuring method for direction finding and direction uncertainty determination

 #50
20160011292
2016-01-14

Angle determining system and method

 #51
20150309152
2015-10-29

Method for finding signal direction using modal antenna

 #52
20150241546
2015-08-27

Cooperative automatic tracking

 #53
20150226857
2015-08-13

Detection of spoofed satellite signals

 #54
20150204966
2015-07-23

Radar apparatus

 #55
20140266882
2014-09-18

System and process of determining vehicle attitude

 #56
20140229039
2014-08-14

Methods and apparatus to mitigate instrument landing system overflight interference

 #57
20140197928
2014-07-17

System for and method of locating radio frequency identification (RFID) tags associated with items in a controlled area

 #58
20140159945
2014-06-12

Method and device for estimating direction of arrival

 #59
20140152503
2014-06-05

DIRECTION OF ARRIVAL ESTIMATION USING LINEAR ARRAY

 #60
20140139372
2014-05-22

Beam direction selection method and apparatus for use in beamforming system

 #61
20130099975
2013-04-25

Search and rescue method and system

 #62
20120258729
2012-10-11

Enhanced angle-of-arrival positioning

 #63
20120150405
2012-06-14

Moving body anti-collision device and moving body with the same

 #64
20120127033
2012-05-24

Alignment system

 #65
20120086605
2012-04-12

Method of determining the direction of arrival of a high-frequency electromagnetic wave

 #66
20120032853
2012-02-09

Direction Finding Antenna

 #67
20090222152
2009-09-03

Device for control of relative position(s) by measurements of power, for a spacecraft of a group of spacecraft in formation

 #68
20090201902
2009-08-13

Uplink channel receiving and transmitting apparatuses and methods

 #69
20080258065
2008-10-23

Electromagnetic Energy Propagation Direction Sensor and Method of Using Same

 #70
20080207226
2008-08-28

Positioning system, positioning method, and positioning program

 #71
20080109970
2008-05-15

Radio frequency identification based system and method for aligning one end of a passenger boarding bridge with a doorway of an aircraft

 #72
20080103644
2008-05-01

METHOD AND SYSTEM FOR USING DATABASE AND GPS DATA TO LINEARIZE VOR AND ILS NAVIGATION DATA

 #73
20060049985
2006-03-09

Apparatus and methods for detecting and locating signals

 #74
20060028388
2006-02-09

Chiral polarization ultrawideband slot antenna

 #75
20050032531
2005-02-10

Location positioning in wireless networks

 #76
19244838
2025-11-11

Antenna arrangements for measurement of angle of arrival over 360 degrees

 #77
15870835
2019-05-28

Systems and methods of protecting equipment operators from electrocution