JP6621219B2 - Gnss妨害信号検出 - Google Patents
Gnss妨害信号検出 Download PDFInfo
- Publication number
- JP6621219B2 JP6621219B2 JP2017535150A JP2017535150A JP6621219B2 JP 6621219 B2 JP6621219 B2 JP 6621219B2 JP 2017535150 A JP2017535150 A JP 2017535150A JP 2017535150 A JP2017535150 A JP 2017535150A JP 6621219 B2 JP6621219 B2 JP 6621219B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- spectrogram
- gnss
- detector
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title description 141
- 238000012360 testing method Methods 0.000 claims description 206
- 238000000034 method Methods 0.000 claims description 153
- 230000003595 spectral effect Effects 0.000 claims description 59
- 230000008569 process Effects 0.000 claims description 36
- 238000012545 processing Methods 0.000 claims description 36
- 238000004458 analytical method Methods 0.000 claims description 28
- 238000004364 calculation method Methods 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 22
- 230000001131 transforming effect Effects 0.000 claims description 2
- 239000000523 sample Substances 0.000 description 99
- 238000005259 measurement Methods 0.000 description 83
- 238000004422 calculation algorithm Methods 0.000 description 71
- 230000008859 change Effects 0.000 description 36
- 238000001228 spectrum Methods 0.000 description 35
- 230000002452 interceptive effect Effects 0.000 description 20
- 230000006870 function Effects 0.000 description 19
- 238000005311 autocorrelation function Methods 0.000 description 18
- 238000013139 quantization Methods 0.000 description 17
- 238000011156 evaluation Methods 0.000 description 12
- 230000000875 corresponding effect Effects 0.000 description 11
- 238000009826 distribution Methods 0.000 description 11
- 230000004927 fusion Effects 0.000 description 11
- 238000012544 monitoring process Methods 0.000 description 11
- 230000000737 periodic effect Effects 0.000 description 11
- 238000007635 classification algorithm Methods 0.000 description 9
- 238000012512 characterization method Methods 0.000 description 8
- 238000003066 decision tree Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000013500 data storage Methods 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000003750 conditioning effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000009499 grossing Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000010183 spectrum analysis Methods 0.000 description 4
- 239000013598 vector Substances 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000005433 ionosphere Substances 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 241000590419 Polygonia interrogationis Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000007418 data mining Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- LIWAQLJGPBVORC-UHFFFAOYSA-N ethylmethylamine Chemical compound CCNC LIWAQLJGPBVORC-UHFFFAOYSA-N 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/16—Spectrum analysis; Fourier analysis
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/20—Countermeasures against jamming
- H04K3/22—Countermeasures against jamming including jamming detection and monitoring
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/40—Jamming having variable characteristics
- H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
- H04K3/822—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by detecting the presence of a surveillance, interception or detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
- H04K3/80—Jamming or countermeasure characterized by its function
- H04K3/90—Jamming or countermeasure characterized by its function related to allowing or preventing navigation or positioning, e.g. GPS
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Radar Systems Or Details Thereof (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1416365.3A GB2530272B (en) | 2014-09-16 | 2014-09-16 | GNSS Jamming Signal Detection |
| GB1416365.3 | 2014-09-16 | ||
| PCT/GB2015/052682 WO2016042325A2 (en) | 2014-09-16 | 2015-09-16 | Gnss jamming signal detection |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2017531410A JP2017531410A (ja) | 2017-10-19 |
| JP2017531410A5 JP2017531410A5 (enExample) | 2018-10-18 |
| JP6621219B2 true JP6621219B2 (ja) | 2019-12-18 |
Family
ID=51869705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017535150A Expired - Fee Related JP6621219B2 (ja) | 2014-09-16 | 2015-09-16 | Gnss妨害信号検出 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10545245B2 (enExample) |
| EP (1) | EP3186910B1 (enExample) |
| JP (1) | JP6621219B2 (enExample) |
| GB (1) | GB2530272B (enExample) |
| WO (1) | WO2016042325A2 (enExample) |
Families Citing this family (48)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12256233B2 (en) | 2013-03-15 | 2025-03-18 | Digital Global Systems, Inc. | Systems and methods for automated financial settlements for dynamic spectrum sharing |
| US10219163B2 (en) | 2013-03-15 | 2019-02-26 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management |
| US10257729B2 (en) | 2013-03-15 | 2019-04-09 | DGS Global Systems, Inc. | Systems, methods, and devices having databases for electronic spectrum management |
| US10257728B2 (en) | 2013-03-15 | 2019-04-09 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management |
| US12356206B2 (en) | 2013-03-15 | 2025-07-08 | Digital Global Systems, Inc. | Systems and methods for automated financial settlements for dynamic spectrum sharing |
| US11646918B2 (en) | 2013-03-15 | 2023-05-09 | Digital Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management for identifying open space |
| US10231206B2 (en) | 2013-03-15 | 2019-03-12 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management for identifying signal-emitting devices |
| US9288683B2 (en) | 2013-03-15 | 2016-03-15 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management |
| US10271233B2 (en) | 2013-03-15 | 2019-04-23 | DGS Global Systems, Inc. | Systems, methods, and devices for automatic signal detection with temporal feature extraction within a spectrum |
| US10237770B2 (en) | 2013-03-15 | 2019-03-19 | DGS Global Systems, Inc. | Systems, methods, and devices having databases and automated reports for electronic spectrum management |
| US10257727B2 (en) | 2013-03-15 | 2019-04-09 | DGS Global Systems, Inc. | Systems methods, and devices having databases and automated reports for electronic spectrum management |
| US10299149B2 (en) | 2013-03-15 | 2019-05-21 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management |
| GB2540536B (en) * | 2015-06-24 | 2021-07-21 | Nottingham Scient Limited | Method of testing a PNT configuration |
| US10587359B2 (en) * | 2015-11-16 | 2020-03-10 | Bae Systems Information And Electronic Systems Integration Inc. | Method and system of reactive interferer detection |
| US10193674B2 (en) * | 2015-12-18 | 2019-01-29 | Qualcomm Incorporated | Methods and systems for processing a global navigation satellite system signal |
| US10529241B2 (en) | 2017-01-23 | 2020-01-07 | Digital Global Systems, Inc. | Unmanned vehicle recognition and threat management |
| US10498951B2 (en) | 2017-01-23 | 2019-12-03 | Digital Global Systems, Inc. | Systems, methods, and devices for unmanned vehicle detection |
| US12205477B2 (en) | 2017-01-23 | 2025-01-21 | Digital Global Systems, Inc. | Unmanned vehicle recognition and threat management |
| US10700794B2 (en) | 2017-01-23 | 2020-06-30 | Digital Global Systems, Inc. | Systems, methods, and devices for automatic signal detection based on power distribution by frequency over time within an electromagnetic spectrum |
| US10459020B2 (en) | 2017-01-23 | 2019-10-29 | DGS Global Systems, Inc. | Systems, methods, and devices for automatic signal detection based on power distribution by frequency over time within a spectrum |
| US12183213B1 (en) | 2017-01-23 | 2024-12-31 | Digital Global Systems, Inc. | Unmanned vehicle recognition and threat management |
| US10554684B2 (en) * | 2017-03-29 | 2020-02-04 | Juniper Networks, Inc. | Content-based optimization and pre-fetching mechanism for security analysis on a network device |
| WO2018184231A1 (en) * | 2017-04-07 | 2018-10-11 | SZ DJI Technology Co., Ltd. | Jamming device and jamming method |
| EP3432473A1 (en) * | 2017-07-17 | 2019-01-23 | Nxp B.V. | A communications system |
| WO2019066391A1 (en) | 2017-09-27 | 2019-04-04 | Samsung Electronics Co., Ltd. | METHOD AND APPARATUS FOR ANALYZING COMMUNICATION ENVIRONMENTS AND NETWORK DESIGN IN TAKING ACCOUNT OF THE PRESENCE OF TREES |
| KR102442461B1 (ko) * | 2017-09-27 | 2022-09-14 | 삼성전자 주식회사 | 수목을 고려한 통신 환경 분석 및 망 설계를 위한 방법 및 장치 |
| US10312954B1 (en) * | 2017-12-25 | 2019-06-04 | International Business Machines Corporation | Identification of RFI (radio frequency interference) |
| US11280912B2 (en) | 2018-01-12 | 2022-03-22 | The Regents Of The University Of Colorado | Hybrid interference localization |
| US11262458B2 (en) * | 2018-04-04 | 2022-03-01 | The Regents Of The University Of Colorado, A Body Corporate | Smart antenna module for GNSS receivers |
| JP7052526B2 (ja) * | 2018-04-23 | 2022-04-12 | 富士通株式会社 | スペクトル解析プログラム、スペクトル解析方法およびスペクトル解析装置 |
| US10943461B2 (en) | 2018-08-24 | 2021-03-09 | Digital Global Systems, Inc. | Systems, methods, and devices for automatic signal detection based on power distribution by frequency over time |
| KR102162284B1 (ko) * | 2018-10-26 | 2020-10-06 | 인하대학교 산학협력단 | 클라우드 데이터 처리 gnss 재밍 감시 방법 및 시스템 |
| WO2020113260A1 (en) * | 2018-12-06 | 2020-06-11 | Saber Astronautics Pty Ltd | A method and a system for assessing aspects of an electromagnetic signal |
| US11419064B2 (en) * | 2019-04-29 | 2022-08-16 | Hughes Network Systems, Llc | Gateway managed terminal uplink power control |
| CN111323794B (zh) * | 2020-03-21 | 2023-05-05 | 哈尔滨工程大学 | 一种基于周期重采样的周期调频干扰消除方法 |
| US11212015B2 (en) * | 2020-05-19 | 2021-12-28 | The Aerospace Corporation | Interference suppression using machine learning |
| CN112653527B (zh) * | 2020-11-27 | 2023-09-12 | 中国航天标准化研究所 | 一种遥感卫星数传产品自动化测试设备及方法 |
| CN114696924B (zh) * | 2020-12-29 | 2024-03-15 | 千寻位置网络有限公司 | 一种基准站信号质量监测方法、装置、设备及介质 |
| CN113093257B (zh) * | 2021-03-11 | 2022-04-12 | 中国电子科技集团公司第五十四研究所 | 一种基于宽带跳频信号的相控阵波束对星跟踪系统与方法 |
| CA3227343A1 (en) | 2021-07-23 | 2023-01-26 | Distributed Spectrum Inc. | Radio-frequency signal processing systems and methods |
| US12248077B2 (en) | 2021-12-23 | 2025-03-11 | Rockwell Collins, Inc. | System and method for airborne GNSS RF interference detection |
| GB2621176A (en) * | 2022-08-05 | 2024-02-07 | Ordnance Survey Ltd | Detecting jamming in OSNET using machine learning |
| US12040888B2 (en) * | 2022-11-21 | 2024-07-16 | Bae Systems Information And Electronic Systems Integration Inc. | Jammer detection system |
| US20240348354A1 (en) * | 2023-04-17 | 2024-10-17 | Benjamin Harpe | Distributed radio frequency signal processing systems and methods |
| US20240402357A1 (en) * | 2023-06-02 | 2024-12-05 | Qualcomm Incorporated | Multi-satellite-receiver power control |
| CN118332443B (zh) * | 2024-06-12 | 2024-08-27 | 昆明理工大学 | 一种脉冲星数据射频干扰检测方法 |
| CN118348562B (zh) * | 2024-06-18 | 2024-09-10 | 烟台欣飞智能系统有限公司 | 一种导航诱骗信号干扰信号识别标记系统 |
| CN119414420B (zh) * | 2024-11-20 | 2025-09-02 | 北京锐士装备科技有限公司 | 一种卫星导航干扰信号检测方法及系统 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5128679A (en) * | 1989-02-21 | 1992-07-07 | Moffat William V | Electronic combat effectiveness monitor |
| USRE37802E1 (en) * | 1992-03-31 | 2002-07-23 | Wi-Lan Inc. | Multicode direct sequence spread spectrum |
| EP0954119A3 (en) * | 1998-04-29 | 1999-11-10 | Globalstar L.P. | A method of and system for generating a radio frequency map |
| US6407699B1 (en) * | 2000-04-14 | 2002-06-18 | Chun Yang | Method and device for rapidly extracting time and frequency parameters from high dynamic direct sequence spread spectrum radio signals under interference |
| US7778367B1 (en) * | 2005-09-23 | 2010-08-17 | Rockwell Collins, Inc. | Method and apparatus for receiving a geo-location signal |
| EP1862816B1 (en) * | 2006-06-04 | 2013-03-20 | SISVEL Technology Srl | Time-frequency interfering detector |
| US7965758B2 (en) * | 2006-09-15 | 2011-06-21 | Itron, Inc. | Cell isolation through quasi-orthogonal sequences in a frequency hopping network |
| JP5248253B2 (ja) | 2008-09-26 | 2013-07-31 | パナソニック株式会社 | 受信装置および受信方法 |
| CN101526566B (zh) * | 2009-04-09 | 2011-06-29 | 国家无线电监测中心 | 一种干扰信号源的监测方法及装置 |
| JP5483750B2 (ja) | 2009-11-30 | 2014-05-07 | 古野電気株式会社 | 不要信号判別装置、不要信号判別方法、不要信号判別プログラム、gnss受信装置および移動端末 |
| JP2013047642A (ja) * | 2011-08-29 | 2013-03-07 | Toyota Motor Corp | Gps妨害電波位置特定システム及びgps妨害電波位置特定方法 |
| ITTO20120408A1 (it) | 2012-05-07 | 2013-11-08 | Selex Elsag Spa | Dispositivo di rilevazione di un segnale interferente per un sistema globale di navigazione satellitare |
| US9185516B2 (en) * | 2012-05-21 | 2015-11-10 | Qualcomm Incorporated | Radio frequency interference awareness assistance data |
| US8958511B2 (en) * | 2012-09-27 | 2015-02-17 | Electronics And Telecommunications Research Institute | System and method for detecting broadband global positioning system (GPS) jamming |
| CN103078661A (zh) * | 2012-12-18 | 2013-05-01 | 西北工业大学 | 一种基于迭代门限的扩频系统干扰抑制方法 |
| CN103399324B (zh) * | 2013-08-13 | 2015-03-04 | 北京星地恒通信息科技有限公司 | 一种卫星导航抗干扰天线 |
| GB201315839D0 (en) * | 2013-09-05 | 2013-10-23 | Mbda Uk Ltd | Geo-location of jamming signals |
| EP2846174A1 (en) * | 2013-09-05 | 2015-03-11 | MBDA UK Limited | Geo-location of Jamming Signals |
-
2014
- 2014-09-16 GB GB1416365.3A patent/GB2530272B/en not_active Expired - Fee Related
-
2015
- 2015-09-16 EP EP15771233.2A patent/EP3186910B1/en active Active
- 2015-09-16 US US15/511,970 patent/US10545245B2/en not_active Expired - Fee Related
- 2015-09-16 WO PCT/GB2015/052682 patent/WO2016042325A2/en not_active Ceased
- 2015-09-16 JP JP2017535150A patent/JP6621219B2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP3186910A2 (en) | 2017-07-05 |
| US20170261615A1 (en) | 2017-09-14 |
| US10545245B2 (en) | 2020-01-28 |
| EP3186910B1 (en) | 2020-06-17 |
| JP2017531410A (ja) | 2017-10-19 |
| GB2530272B (en) | 2020-10-07 |
| GB201416365D0 (en) | 2014-10-29 |
| WO2016042325A2 (en) | 2016-03-24 |
| GB2530272A (en) | 2016-03-23 |
| WO2016042325A3 (en) | 2016-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6621219B2 (ja) | Gnss妨害信号検出 | |
| US10271179B1 (en) | Geolocation determination using deep machine learning | |
| CN104160297B (zh) | 对无线信号接收器中的非所要窄带信号贡献的检测和滤波 | |
| US8896479B2 (en) | GPS signal reception apparatus and method | |
| US9157992B2 (en) | Knowledge aided detector | |
| JP6363637B2 (ja) | 無線信号のなりすましを検出するシステムおよび方法 | |
| Chen et al. | GNSS interference type recognition with fingerprint spectrum DNN method | |
| JP2017531410A5 (enExample) | ||
| US9065686B2 (en) | Spur detection, cancellation and tracking in a wireless signal receiver | |
| EP2668519B1 (fr) | Procede d'affichage de la surface equivalente radar minimale detectable | |
| CN113124919B (zh) | 参考站的异常监测方法、装置及相关设备 | |
| US11221433B2 (en) | System and method for determining characteristics of traveling ionospheric disturbances | |
| Sakorn et al. | Calculating AGC and C/N0 thresholds of mobile for jamming detection | |
| Ouassou et al. | Estimation of scintillation indices: a novel approach based on local kernel regression methods | |
| de Paolo et al. | Improving SeaSonde radial velocity accuracy and variance using radial metrics | |
| RU2327181C1 (ru) | Способ определения местоположения источника радиоизлучения | |
| Moussa | High resolution jamming detection in global navigation satellite systems | |
| US11038606B1 (en) | Source discrimination of fluctuating radio signals | |
| US10514443B2 (en) | Method for evaluating radar radiation, and radar apparatus | |
| Vikram et al. | An Event Driven GPS Data Collection System for Studying Ionospheric Scintillation | |
| Javadi et al. | Weighted decision fusion vs. counting rule over wireless sensor networks: A realistic comparison | |
| CN120034248B (zh) | 一种信号抗干扰方法及装置、设备、存储介质 | |
| Seo et al. | An Analysis of CFAR Thresholds and Scale Factors with Window Effects in Pulse Compression | |
| Ding | Improving generic GNSS receiver performance with intermediate frequency adaptive anti-jamming technology | |
| Li et al. | RainGaugeNet: CSI-Based Sub-6 GHz Rainfall Attenuation Measurement and Classification for ISAC Applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180910 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180910 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20190626 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190806 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20190919 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20191001 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20191023 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20191118 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 6621219 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |