G01S3/04 - CPC Classification Index

ClassID:

172270 ⎘

G01S3/04 - 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 Details

Sub-classes:

G01S3/043 » {Receivers} 319
G01S3/046 » {Displays or indicators} 107
G01S3/06 » Means for increasing effective directivity, e.g. by combining signals having differently-oriented directivity characteristics, by sharpening the envelope waveform of the signal desired from a rotating or oscillating beam aerial 31
G01S3/08 » Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop aerial systems 6
G01S3/10 » Means for reducing or compensating for quadrantal, site, or like errors 18
G01S3/12 » Means for determining sense of direction, e.g. by combining signals from directional aerial or goniometer search coil with those from non-directional aerial 20

Recent Application in this class:

20250208248

2025-06-26

A SYSTEM AND METHOD OF DETECTING A DIRECTION OF ARRIVAL OF ONE OR MORE TARGET SIGNALS USING AN ANTENNA ARRAY

20250164596

2025-05-22

DIRECTION-FINDING AMBIGUITY RESOLUTION IN LONG BASELINE INTERFEROMETERS USING RANDOM FOREST REGRESSION

20240355213

2024-10-24

DRONE ENCROACHMENT AVOIDANCE MONITOR

20240047997

2024-02-08

Power supply mat, noncontact power supply system, and moving body

20240042963

2024-02-08

METHOD FOR ACTIVATING A VEHICLE FUNCTION AND ASSOCIATED ACTIVATION DEVICE

20230269040

2023-08-24

METHOD AND APPARATUS FOR DETERMINING ANGLE, METHOD AND APPARATUS FOR TRANSMITTING SIGNALS

20230196926

2023-06-22

Drone encroachment avoidance monitor

20210383707

2021-12-09

Drone encroachment avoidance monitor

20210343167

2021-11-04

DRONE ENCROACHMENT AVOIDANCE MONITOR

#10

20210319412

2021-10-14

METHOD AND SYSTEM TO DIGITALLY TRACK AND MONITOR AN AUTOMOTIVE REFINISH REPAIR PROCESS

#11

20200265729

2020-08-20

Drone encroachment avoidance monitor

#12

20200265728

2020-08-20

Drone encroachment avoidance monitor

#13

20200264257

2020-08-20

System and method for determining angle of arrival for communications

#14

20200264256

2020-08-20

System and method for determining angle of arrival for communications

#15

20200027359

2020-01-23

DRONE ENCROACHMENT AVOIDANCE MONITOR

#16

20190280785

2019-09-12

Angle of arrival estimation in a radio communications network

#17

20190164442

2019-05-30

Drone encroachment avoidance monitor

#18

20190075232

2019-03-07

Shared experiences in panoramic video

#19

20190005830

2019-01-03

Drone encroachment avoidance monitor

#20

20180337739

2018-11-22

Angle of arrival estimation in a radio communications network

#21

20180329016

2018-11-15

Method for the location of a beacon by angles of arrival

#22

20180267130

2018-09-20

Estimating a source location of a projectile

#23

20180262684

2018-09-13

Generating objects in real time panoramic video

#24

20180172794

2018-06-21

System and method for rank estimation of electromagnetic emitters

#25

20180167102

2018-06-14

Phased array beam tracking using beam gain coding

#26

20180074180

2018-03-15

ULTRAFAST TARGET DETECTION BASED ON MICROWAVE METAMATERIALS

#27

20170039860

2017-02-09

Drone encroachment avoidance monitor

#28

20160323048

2016-11-03

Portable directional antenna, measurement arrangement and measurement method

#29

20160073372

2016-03-10

Determining an angle of direct path of a signal

#30

20160044626

2016-02-11

Mobile terminal, and locating method and device

#31

20150365116

2015-12-17

Narrowband RSSI technique(s) for the mitigation of adjacent satellite interference

#32

20150304979

2015-10-22

Characterizing multipath delays in antenna array and synthetic aperture radar systems

#33

20150301152

2015-10-22

Localization with non-synchronous emission and multipath transmission

#34

20150173038

2015-06-18

Positioning information determination method and device

#35

20150123793

2015-05-07

TRACKING SYSTEM AND METHOD

#36

20150077284

2015-03-19

Estimating a source location of a projectile

#37

20150002271

2015-01-01

VARIABLE LISTEN DURATION AND/OR SYNCHRONIZED WAKE-UP OF ASSET TAGS

#38

20140368411

2014-12-18

Mobile equipment, information display system and recording medium

#39

20140368334

2014-12-18

Position location system architecture: peer to peer measurement mode

#40

20140368321

2014-12-18

ULTRA-WIDEBAND RANGING WAVEFORM

#41

20140327514

2014-11-06

Method, apparatus and computer program for determining the location of a user in an area

#42

20140321583

2014-10-30

Apparatus and associated methods for switching between antennas in a multi-antenna receiver

#43

20140139663

2014-05-22

Wireless communication device, wireless communication method, and computer program product

#44

20140043186

2014-02-13

System, method and apparatus for radio frequency based location and tracking

#45

20130335271

2013-12-19

System and method for identifying and tracking 3D location of precast components

#46

20130038487

2013-02-14

Apparatus for direction finding of wireless signals

#47

20120289241

2012-11-15

Direction-enhanced navigation

#48

20120229339

2012-09-13

Metamaterial-based direction-finding antenna systems

#49

20110267222

2011-11-03

LOCATION DETECTION METHODS AND SYSTEMS

#50

20110199263

2011-08-18

METHOD AND APPARATUS FOR ESTIMATING ANGLE OF ARRIVAL

#51

20110019599

2011-01-27

Method of generating repeated data package transmission

#52

20100060507

2010-03-11

ELECTRONIC WARFARE RECEIVER HAVING DIGITAL ANTENNA

#53

20090219211

2009-09-03

Method and apparatus for locating the source of radio frequency emissions

#54

20090121934

2009-05-14

Adaptive array control device, method and program, and adaptive array processing device, method and program

#55

20090086578

2009-04-02

Adaptive array control device, method and program, and adaptive array processing device, method and program using the same

#56

20090073040

2009-03-19

Adaptive array control device, method and program, and adaptive array processing device, method and program

#57

20080122683

2008-05-29

Monopulse antenna tracking and direction finding of multiple sources

#58

20080039147

2008-02-14

Cancellation system for frequency reuse in microwave communications

#59

20070088498

2007-04-19

Method, apparatus and computer program for determining the location of a user in an area

#60

20060071866

2006-04-06

Antenna system and method for measuring the azimuth and elevation angles of an active, signal sending radiosonde

#61

20050239406

2005-10-27

Cancellation system for frequency reuse in microwave communications

#62

15649117

2019-11-12

System and method for rank estimation of electromagnetic emitters

#63

14692192

2018-06-12

Three dimensional direction finder with one dimensional sensor array

#64

14605923

2015-08-04

Portable self-contained totally integrated electronic security and control system

#65

14068920

2017-04-25

Display apparatus including a transparent electronic monitor

#66

13745700

2015-09-22

Distance measuring quality factor using signal characterization