ClassID:

172284

G01S3/20 - 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 sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic derived by sampling signal received by an antenna system having periodically-varied orientation of directivity characteristic

Recent Application in this class:
#1
20260126511
2026-05-07

Direction Finding Using a Single Electrically-Small Electromagnetic Field Sensing Device

#2
20250341604
2025-11-06

COMPRESSIVE SENSING CORRELATION INTERFEROMETER DIRECTION FINDING

#3
20250264617
2025-08-21

GPS SPOOFER DIRECTION FINDING AND GEOLOCATION

#4
20240355213
2024-10-24

DRONE ENCROACHMENT AVOIDANCE MONITOR

#5
20240288529
2024-08-29

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

#6
20230196926
2023-06-22

Drone encroachment avoidance monitor

#7
20210383707
2021-12-09

Drone encroachment avoidance monitor

#8
20210343167
2021-11-04

DRONE ENCROACHMENT AVOIDANCE MONITOR

#9
20210270926
2021-09-02

THREE-DIMENSIONAL GEOLOCATION SYSTEM

#10
20200265729
2020-08-20

Drone encroachment avoidance monitor

#11
20200265728
2020-08-20

Drone encroachment avoidance monitor

#12
20200096595
2020-03-26

Radar apparatus and target determination method

#13
20200027359
2020-01-23

DRONE ENCROACHMENT AVOIDANCE MONITOR

#14
20190235042
2019-08-01

Device and method for detecting presence of a wireless communication device

#15
20190164442
2019-05-30

Drone encroachment avoidance monitor

#16
20190049592
2019-02-14

Multi-mode tracking device

#17
20190005830
2019-01-03

Drone encroachment avoidance monitor

#18
20180358695
2018-12-13

Determination of electrical phase relation in a communications network

#19
20180348328
2018-12-06

Angle of arrival estimation in a radio communications network

#20
20180316885
2018-11-01

Pointing an antenna at a signal source using augmented reality

#21
20180316401
2018-11-01

Selectively controlling a direction of signal transmission using adaptive augmented reality

#22
20180152852
2018-05-31

Device including antenna and control method thereof

#23
20170039860
2017-02-09

Drone encroachment avoidance monitor

#24
20160209504
2016-07-21

Radar sensor for motor vehicles

#25
20160069979
2016-03-10

Apparatus and method for finding hybrid direction using two baselines

#26
20150334527
2015-11-19

Electronic device

#27
20130059600
2013-03-07

Short range RF monitoring system

#28
20130059539
2013-03-07

Short range RF monitoring system

#29
20130002489
2013-01-03

Direction finding system device and method

#30
20120299774
2012-11-29

Wireless communication device, wireless communication system, and method for detecting interference direction

#31
20120238288
2012-09-20

Apparatus and method for determining relative direction of a wireless peer device from another device

#32
20110098001
2011-04-28

Short range RF monitoring system

#33
20110068980
2011-03-24

Direction finding method and device

#34
20110065400
2011-03-17

INTEGRATED ANTENNA ARRAY AND RF FRONT END MODULE

#35
20100289624
2010-11-18

APPARATUS FOR COMMUNICATING WITH RFID TAG

#36
20100207818
2010-08-19

Robust VSAT tracking algorithm

#37
20090009383
2009-01-08

Radar system

#38
20080088497
2008-04-17

Radar apparatus having wide-angle detection

#39
20080012751
2008-01-17

Guidance system

#40
20060274149
2006-12-07

Apparatus and method for predicting collision

#41
20050285742
2005-12-29

Item finding using RF signalling

#42
20050046568
2005-03-03

Wireless terminal position detecting device and method

#43
15951191
2018-08-28

Wireless signal processing method and wireless communication device