Patents-Review.com
ClassID:

172653 ⎘

G01S13/0218 - CPC Classification

Classification description:

Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified; Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems Very long range radars, e.g. surface wave radar, over-the-horizon or ionospheric propagation systems

Sub-classes:
Recent Application in this class:
#1
20250377442
2025-12-11

RADAR APPARATUS

 #2
20250102655
2025-03-27

ANTENNA UNIT

 #3
20250076480
2025-03-06

VECTOR SENSOR ARRAY SURFACE WAVE RADAR

 #4
20240405442
2024-12-05

CORNER REFLECTING DEVICE AND CORNER REFLECTING SYSTEM

 #5
20240369682
2024-11-07

RADAR APPARATUS

 #6
20240353576
2024-10-24

PULSED WIRELESS GPS-DENIED POSITIONING/NAVIGATION/TIMING SYSTEM

 #7
20240353575
2024-10-24

PULSED WIRELESS GPS-DENIED POSITIONING/NAVIGATION/TIMING SYSTEM

 #8
20240264269
2024-08-08

RADAR HAVING MULTI-BAND CONCENTRIC RINGS OF ARRAY ELEMENTS

 #9
20230147240
2023-05-11

Radar apparatus

 #10
20230064143
2023-03-02

Systems and methods for ultra-wideband-based angle of approach determination

 #11
20220413113
2022-12-29

Systems and methods for over the horizon sensing of low small targets

 #12
20220091245
2022-03-24

Vector sensor array surface wave radar

 #13
20210382183
2021-12-09

Pulsed wireless GPS-denied positioning/navigation/timing system

 #14
20210373143
2021-12-02

Dynamic radar detection threshold for stateful dynamic frequency selection

 #15
20210325523
2021-10-21

Method and apparatus for detecting signal propagation type

 #16
20210132208
2021-05-06

Over the horizon radar (OTH) system and method

 #17
20210096231
2021-04-01

Vector sensor array surface wave radar

 #18
20200287264
2020-09-10

Excitation and use of guided surface wave modes on lossy media

 #19
20200182993
2020-06-11

Object detection device, object detection method, and sensor device

 #20
20200103495
2020-04-02

Radar apparatus

 #21
20200018841
2020-01-16

Removal of directwave high frequency signal for ionospheric sounder return processing

 #22
20190310359
2019-10-10

Radar apparatus and antenna apparatus therefor

 #23
20190310358
2019-10-10

Radar apparatus and antenna apparatus therefor

 #24
20190260105
2019-08-22

SUPERPOSITION OF GUIDED SURFACE WAVES ON LOSSY MEDIA

 #25
20190181531
2019-06-13

Using phased arrays of waveguide couplers in waveguide cavities to prevent illegitimate reception of power

 #26
20190179000
2019-06-13

Using phased arrays of waveguide couplers in waveguide cavities to detect loading

 #27
20190058327
2019-02-21

Adaptation of polyphase waveguide probes

 #28
20190047487
2019-02-14

Installation device for surveillance equipment

 #29
20190047484
2019-02-14

Vehicle mounting device for surveillance equipment

 #30
20180364346
2018-12-20

METHOD FOR SPECTRAL ESTIMATION OF THE CLUTTER OF A HALINE LIQUID MEDIUM

 #31
20180356510
2018-12-13

Universal method for precise projectile flight prediction

 #32
20180315325
2018-11-01

Monitoring low-flying airplanes

 #33
20180309289
2018-10-25

Adaptation of polyphase waveguide probes

 #34
20180261902
2018-09-13

Measuring operational parameters at the guided surface waveguide probe

 #35
20180196132
2018-07-12

Buoy-type high frequency ground-wave radar system

 #36
20180183128
2018-06-28

Excitation and use of guided surface wave modes on lossy media

 #37
20180180729
2018-06-28

EXCITATION AND USE OF GUIDED SURFACE WAVE MODES ON LOSSY MEDIA

 #38
20180151933
2018-05-31

Superposition of guided surface waves on lossy media

 #39
20180143295
2018-05-24

System and technique for mitigation of clutter in radar

 #40
20170099091
2017-04-06

System and method for widely-spaced coherent transmit arraying using a remote receiver

 #41
20160259041
2016-09-08

Apparatus and method for performing passive sensing

 #42
20160238695
2016-08-18

Signal correction for environmental distortion

 #43
20160079754
2016-03-17

Adaptation of polyphase waveguide probes

 #44
20160079645
2016-03-17

Superposition of guided surface waves on lossy media

 #45
20160077203
2016-03-17

Remote surface sensing using guided surface wave modes on lossy media

 #46
20150355324
2015-12-10

System and method for detection and orbit determination of earth orbiting objects

 #47
20150316642
2015-11-05

Mitigation of anomalous propagation effects in radar

 #48
20150029058
2015-01-29

Accurate timing distribution by high-frequency radio

 #49
20140252886
2014-09-11

Excitation and use of guided surface wave modes on lossy media

 #50
20140252865
2014-09-11

Excitation and use of guided surface wave modes on lossy media

 #51
20140191893
2014-07-10

System and method for wide-area stratospheric surveillance

 #52
20130201054
2013-08-08

Knowledge aided detector

 #53
20130106642
2013-05-02

Subterranean radar system and method

 #54
20120098697
2012-04-26

Time transfer method and system

 #55
20110241929
2011-10-06

High frequency surfacewave radar

 #56
20100225529
2010-09-09

Unswitched, ultra low power, long range radar system

 #57
20100156703
2010-06-24

Radar coordinate registration

 #58
20090078037
2009-03-26

Method for measuring surface currents using a long-range single station high frequency ground wave radar system

 #59
20080012753
2008-01-17

Passive channel calibration method based on non-linear antenna array

 #60
20070273574
2007-11-29

Method and system for multiple target class data recording, processing and display for over-the-horizon radar

 #61
20050007276
2005-01-13

Circular superdirective receive antenna arrays

 #62
15234187
2017-12-26

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