IT8648153A0 - Perfezionamento nei sistemi di montaggio ionosferico - Google Patents
Perfezionamento nei sistemi di montaggio ionosfericoInfo
- Publication number
- IT8648153A0 IT8648153A0 IT8648153A IT4815386A IT8648153A0 IT 8648153 A0 IT8648153 A0 IT 8648153A0 IT 8648153 A IT8648153 A IT 8648153A IT 4815386 A IT4815386 A IT 4815386A IT 8648153 A0 IT8648153 A0 IT 8648153A0
- Authority
- IT
- Italy
- Prior art keywords
- ionosphere
- improvement
- mounting systems
- mounting
- systems
- Prior art date
Links
- 239000005433 ionosphere Substances 0.000 title 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
- G01S13/00—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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/0218—Very long range radars, e.g. surface wave radar, over-the-horizon or ionospheric propagation systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/22—Scatter propagation systems, e.g. ionospheric, tropospheric or meteor scatter
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Quality & Reliability (AREA)
- General Physics & Mathematics (AREA)
- Noise Elimination (AREA)
- Mobile Radio Communication Systems (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Selective Calling Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8427440 | 1984-10-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT8648153A0 true IT8648153A0 (it) | 1986-06-19 |
| IT1235572B IT1235572B (it) | 1992-09-11 |
Family
ID=10568986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT8648153A IT1235572B (it) | 1984-10-30 | 1986-06-19 | Perfezionamento nei sistemi di sondaggio ionosferico |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5230076A (it) |
| AU (1) | AU632279B2 (it) |
| CA (1) | CA1333921C (it) |
| DE (1) | DE3546469C2 (it) |
| FR (1) | FR2714777B1 (it) |
| GB (1) | GB2253971B (it) |
| IT (1) | IT1235572B (it) |
| NL (1) | NL192282C (it) |
| SE (1) | SE469649B (it) |
Families Citing this family (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA842579B (en) * | 1984-04-05 | 1984-11-28 | Gert Nel Janse Van Rensburg | Flow valve |
| JPH0828754B2 (ja) * | 1993-06-30 | 1996-03-21 | 日本電気株式会社 | フレーム同期方式 |
| US5339331A (en) * | 1993-09-09 | 1994-08-16 | Lockheed Corporation | Frequency hopping spread spectrum receiver |
| US5463656A (en) * | 1993-10-29 | 1995-10-31 | Harris Corporation | System for conducting video communications over satellite communication link with aircraft having physically compact, effectively conformal, phased array antenna |
| US5563918A (en) * | 1993-12-17 | 1996-10-08 | Rockwell International | Method of selecting optimum frequency in skywave communication apparatus |
| US5428358A (en) * | 1994-05-03 | 1995-06-27 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus and method for ionospheric mapping |
| US5604503A (en) * | 1995-03-27 | 1997-02-18 | Lockheed Martin Corporation | Multipath and co-channel signal preprocessor |
| US5943629A (en) * | 1996-04-01 | 1999-08-24 | Tci International, Inc. | Method and apparatus for real-time ionospheric mapping and dynamic forecasting |
| US5913158A (en) * | 1997-01-17 | 1999-06-15 | Sullivan; William B. | Dynamic temperature measurement |
| US6067040A (en) * | 1997-05-30 | 2000-05-23 | The Whitaker Corporation | Low cost-high resolution radar for commercial and industrial applications |
| US6331997B1 (en) * | 1998-08-04 | 2001-12-18 | Linkair Communication, Inc. | Scheme for spread spectrum multiple access coding |
| US6078607A (en) * | 1998-08-10 | 2000-06-20 | Omnipont Corporation | Synchronization codes for use in communication |
| EP0994575A1 (en) * | 1998-10-12 | 2000-04-19 | Hewlett-Packard Company | Extraction of primary and co-channel signals using propagation path metrics |
| US6400315B1 (en) | 2000-07-20 | 2002-06-04 | The Boeing Company | Control system for electronically scanned phased array antennas with a mechanically steered axis |
| GB2365239A (en) * | 2000-07-26 | 2002-02-13 | Alenia Marconi Systems Ltd | Near-vertical incidence skywave HF radar |
| CN1223195C (zh) | 2000-08-16 | 2005-10-12 | 波音公司 | 向移动平台提供双向数据业务和实况电视节目的方法和设备 |
| US7921442B2 (en) * | 2000-08-16 | 2011-04-05 | The Boeing Company | Method and apparatus for simultaneous live television and data services using single beam antennas |
| US6356239B1 (en) | 2000-08-23 | 2002-03-12 | The Boeing Company | Method for maintaining instantaneous bandwidth for a segmented, mechanically augmented phased array antenna |
| US7054593B2 (en) | 2000-09-28 | 2006-05-30 | The Boeing Company | Return link design for PSD limited mobile satellite communication systems |
| US6847801B2 (en) * | 2001-08-30 | 2005-01-25 | The Boeing Company | Communications system and method employing forward satellite links using multiple simultaneous data rates |
| KR20030048722A (ko) * | 2001-12-12 | 2003-06-25 | 박호영 | 전리층 반사파 대역에서의 데이터를 송신하기 전력의 축전방법 |
| US6747960B2 (en) | 2001-12-21 | 2004-06-08 | The Boeing Company | Closed loop power control for TDMA links |
| US20040137840A1 (en) * | 2003-01-15 | 2004-07-15 | La Chapelle Michael De | Bi-directional transponder apparatus and method of operation |
| US7751337B2 (en) * | 2003-02-10 | 2010-07-06 | The Boeing Company | Method and apparatus for optimizing forward link data rate for radio frequency transmissions to mobile platforms |
| US7515916B1 (en) | 2003-09-22 | 2009-04-07 | Veriwave, Incorporated | Method and apparatus for multi-dimensional channel sounding and radio frequency propagation measurements |
| US7860497B2 (en) * | 2004-03-31 | 2010-12-28 | The Boeing Company | Dynamic configuration management |
| DE102005038391A1 (de) * | 2004-10-01 | 2006-04-06 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Ermittlung eines Atmosphärenzustandes |
| KR100655210B1 (ko) | 2004-12-06 | 2006-12-08 | 삼성전자주식회사 | 전리층을 이용한 통신 장치 및 방법 |
| RU2316898C1 (ru) * | 2006-07-04 | 2008-02-10 | Государственное образовательное учреждение высшего профессионального образования "Марийский государственный университет" | Способ одновременного измерения частотных зависимостей доплеровского смещения частоты и времени распространения коротковолновых сигналов в ионосферной радиолинии |
| US7890821B2 (en) * | 2007-10-04 | 2011-02-15 | Veriwave, Inc. | Channel impairment emulator systems and methods |
| US8189708B2 (en) * | 2008-08-08 | 2012-05-29 | The Boeing Company | System and method for accurate downlink power control of composite QPSK modulated signals |
| US10148345B2 (en) | 2013-07-26 | 2018-12-04 | Massachusetts Institute Of Technology | Accurate timing distribution by high-frequency radio |
| RU2581627C2 (ru) * | 2014-05-21 | 2016-04-20 | Открытое акционерное общество "Омский научно-исследовательский институт приборостроения" (ОАО "ОНИИП") | Лчм-ионозонд |
| US20160197669A1 (en) | 2014-12-11 | 2016-07-07 | Tesla Wireless Company LLC | Communication method and system that uses low latency/low data bandwidth and high latency/high data bandwidth pathways |
| JP6800878B2 (ja) * | 2014-12-12 | 2020-12-16 | サービスィズ ディベロップメント カンパニー エルエルシー | 高周波数ラジオ通信ネットワークを介した情報通信方法、コンピューティングデバイスおよび通信システム |
| US9693330B1 (en) * | 2015-07-30 | 2017-06-27 | Rockwell Collins, Inc. | Wideband high frequency based precision time transfer |
| GB2581700B (en) * | 2017-10-03 | 2022-06-01 | Skywave Networks Llc | Method and system of preconditioning transmitted signals |
| EP3692648A4 (en) * | 2017-10-04 | 2021-06-23 | Skywave Networks LLC | BEST FREQUENCY SELECTION TECHNIQUE FOR TRANSMISSION BASED ON CHANGING ATMOSPHERIC CONDITIONS |
| WO2019070861A2 (en) | 2017-10-04 | 2019-04-11 | Skywave Networks Llc | PROCESSING SIGNALS RECEIVED ON PATHS HAVING DIFFERENT NUMBERS OF HOPPING |
| CN111566951A (zh) | 2017-10-25 | 2020-08-21 | 天波网络有限责任公司 | 用于处理传送元数据的模糊逻辑 |
| RU2685245C1 (ru) * | 2018-03-19 | 2019-04-17 | Акционерное общество "Научно-производственное предприятие "Полет" | Устройство для анализа и выбора оптимальных авиационных декаметровых радиоканалов с использованием лчм сигналов |
| US11047967B2 (en) * | 2018-07-12 | 2021-06-29 | Southwest Research Institute | Removal of directwave high frequency signal for ionospheric sounder return processing |
| FR3084489B1 (fr) * | 2018-07-26 | 2020-09-11 | Etat Francais Represente Par Le Delegue General Pour Larmement | Procede de detection d’au moins un equipement informatique compromis au sein d’un systeme d’information |
| CN113992287B (zh) * | 2021-10-26 | 2024-05-24 | 封开低频时码授时台 | 一种低频时码授时信号载波频率选择方法及系统 |
| CN114545357B (zh) * | 2022-04-25 | 2022-07-19 | 武汉大学 | 一种基于互谱分析的电离层Es层高分辨率垂直探测方法 |
Family Cites Families (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL18014C (it) * | 1924-11-06 | |||
| US2191277A (en) * | 1938-09-16 | 1940-02-20 | Rca Corp | Method of and apparatus for making measurements at ultra high frequencies |
| US3020399A (en) * | 1959-01-09 | 1962-02-06 | Rixon Electronics Inc | Reduction of multipath effects by frequency shift |
| NL130063C (it) * | 1959-07-02 | |||
| GB1109444A (en) * | 1964-06-13 | 1968-04-10 | Emi Ltd | Improvements relating to interrogating apparatus for determining the optimum frequency for radio communication |
| US3443230A (en) * | 1964-08-03 | 1969-05-06 | Granger Associates | Plural channel oblique ionosphere sounder system |
| US3351859A (en) * | 1964-08-19 | 1967-11-07 | Motorola Inc | Communication system employing multipath rejection means |
| US3495176A (en) * | 1965-01-25 | 1970-02-10 | Granger Associates | Ionosphere sounder system |
| US3475684A (en) * | 1965-04-20 | 1969-10-28 | Emi Ltd | Interrogating apparatus for determining optimum frequency for radio communication |
| US3443228A (en) * | 1965-11-22 | 1969-05-06 | Gen Atronics Corp | Optimum frequency communication system with different test frequencies in different test intervals |
| US3532988A (en) * | 1969-01-23 | 1970-10-06 | Motorola Inc | Digital troposcatter multiplex communication system optimum frequency |
| US3617891A (en) * | 1969-05-26 | 1971-11-02 | Emi Electronics Canada | Optimum frequency determining radio communication system |
| US3961172A (en) * | 1973-12-03 | 1976-06-01 | Robert Stewart Hutcheon | Real-time cross-correlation signal processor |
| US4197500A (en) * | 1976-11-01 | 1980-04-08 | The United States Of America As Represented By The Secretary Of The Army | Automatic channel selection |
| US4140973A (en) * | 1977-03-29 | 1979-02-20 | Canadian Patents And Development Limited | Channel evaluation apparatus for point-to-point communications systems |
| US4155040A (en) * | 1977-07-27 | 1979-05-15 | Rockwell International Corporation | Frequency programmable RF communications |
| US4308617A (en) * | 1977-11-07 | 1981-12-29 | The Bendix Corporation | Noiselike amplitude and phase modulation coding for spread spectrum transmissions |
| FR2461264A1 (fr) * | 1979-07-06 | 1981-01-30 | Commissariat Energie Atomique | Sondeur pour la detection et la mesure de phenomenes relatifs a l'environnement du globe terrestre |
| FR2461411B1 (fr) * | 1979-07-13 | 1985-10-31 | Trt Telecom Radio Electr | Systeme de transmission de donnees utilisant les principes d'etalement du spectre |
| US4334322A (en) * | 1979-10-26 | 1982-06-08 | E-Systems, Inc. | Communication management system for providing antijam/privacy capabilities for voice radio communications |
| JPS56109023A (en) * | 1980-01-31 | 1981-08-29 | Nec Corp | Channel selection system |
| US4280128A (en) * | 1980-03-24 | 1981-07-21 | The United States Of America As Represented By The Secretary Of The Army | Adaptive steerable null antenna processor |
| US4309773A (en) * | 1980-04-18 | 1982-01-05 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus and method for radio channel selection |
| US4328581A (en) * | 1980-06-20 | 1982-05-04 | Rockwell International Corporation | Adaptive HF communication system |
| DE3211325C1 (de) * | 1982-03-27 | 1989-05-18 | Rohde & Schwarz GmbH & Co KG, 8000 München | System zum automatischen Aufbau einer Kurzwellen-Telegrafiezeichen-Verbindung |
| US4485477A (en) * | 1982-07-19 | 1984-11-27 | Rca Corporation | Fast frequency/code search |
| IL68987A (en) * | 1982-08-03 | 1986-12-31 | Motorola Inc | Method and apparatus for measuring the strength of a radio frequency signal |
| US4475215A (en) * | 1982-10-15 | 1984-10-02 | The United States Of America As Represented By The Secretary Of The Army | Pulse interference cancelling system for spread spectrum signals utilizing active coherent detection |
| US4538280A (en) * | 1983-05-05 | 1985-08-27 | E-Systems, Inc. | Coherent spread spectrum pseudonoise tracking loop |
| US4599733A (en) * | 1983-09-19 | 1986-07-08 | The United States Of America As Represented By The Secretary Of The Army | Multilevel noise code mate pair generation and utilization of such codes |
| US4744083A (en) * | 1984-09-14 | 1988-05-10 | Geostar Corporation | Satellite-based position determining and message transfer system with monitoring of link quality |
| US4607375A (en) * | 1984-10-17 | 1986-08-19 | Itt Corporation | Covert communication system |
-
1985
- 1985-10-11 GB GB8525105A patent/GB2253971B/en not_active Expired - Lifetime
- 1985-10-17 DE DE3546469A patent/DE3546469C2/de not_active Expired - Lifetime
- 1985-10-17 NL NL8515007A patent/NL192282C/nl not_active IP Right Cessation
- 1985-10-29 US US06/807,972 patent/US5230076A/en not_active Expired - Lifetime
- 1985-10-29 CA CA000494055A patent/CA1333921C/en not_active Expired - Fee Related
- 1985-10-30 AU AU49196/85A patent/AU632279B2/en not_active Expired
-
1986
- 1986-04-24 FR FR8605979A patent/FR2714777B1/fr not_active Expired - Lifetime
- 1986-06-19 IT IT8648153A patent/IT1235572B/it active
- 1986-07-24 SE SE8603211A patent/SE469649B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3546469C2 (de) | 1994-09-08 |
| CA1333921C (en) | 1995-01-10 |
| NL192282B (nl) | 1996-12-02 |
| AU632279B2 (en) | 1992-12-24 |
| NL8515007A (nl) | 1992-10-01 |
| FR2714777B1 (fr) | 1996-04-26 |
| SE469649B (sv) | 1993-08-09 |
| DE3546469A1 (de) | 1993-07-29 |
| NL192282C (nl) | 1997-04-03 |
| US5230076A (en) | 1993-07-20 |
| GB2253971A (en) | 1992-09-23 |
| IT1235572B (it) | 1992-09-11 |
| GB2253971B (en) | 1993-02-03 |
| FR2714777A1 (fr) | 1995-07-07 |
| SE8603211D0 (sv) | 1986-07-24 |
| SE8603211L (sv) | 1992-11-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950929 |