FR2714777B1 - Ensemble de sondage ionosphérique pour télécommunications haute fréquence. - Google Patents

Ensemble de sondage ionosphérique pour télécommunications haute fréquence.

Info

Publication number
FR2714777B1
FR2714777B1 FR8605979A FR8605979A FR2714777B1 FR 2714777 B1 FR2714777 B1 FR 2714777B1 FR 8605979 A FR8605979 A FR 8605979A FR 8605979 A FR8605979 A FR 8605979A FR 2714777 B1 FR2714777 B1 FR 2714777B1
Authority
FR
France
Prior art keywords
high frequency
frequency telecommunications
sounding set
ionospheric sounding
ionospheric
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 - Lifetime
Application number
FR8605979A
Other languages
English (en)
Other versions
FR2714777A1 (fr
Inventor
Robert Graham A Brit Wilkinson
Service Of Rnment
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Government
Original Assignee
UK Government
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by UK Government filed Critical UK Government
Publication of FR2714777A1 publication Critical patent/FR2714777A1/fr
Application granted granted Critical
Publication of FR2714777B1 publication Critical patent/FR2714777B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
FR8605979A 1984-10-30 1986-04-24 Ensemble de sondage ionosphérique pour télécommunications haute fréquence. Expired - Lifetime FR2714777B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8427440 1984-10-30

Publications (2)

Publication Number Publication Date
FR2714777A1 FR2714777A1 (fr) 1995-07-07
FR2714777B1 true FR2714777B1 (fr) 1996-04-26

Family

ID=10568986

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8605979A Expired - Lifetime FR2714777B1 (fr) 1984-10-30 1986-04-24 Ensemble de sondage ionosphérique pour télécommunications haute fréquence.

Country Status (9)

Country Link
US (1) US5230076A (fr)
AU (1) AU632279B2 (fr)
CA (1) CA1333921C (fr)
DE (1) DE3546469C2 (fr)
FR (1) FR2714777B1 (fr)
GB (1) GB2253971B (fr)
IT (1) IT1235572B (fr)
NL (1) NL192282C (fr)
SE (1) SE469649B (fr)

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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
US9848025B2 (en) * 2014-12-12 2017-12-19 Services Development Company LLC Data transmission via a high frequency radio band
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GB2581700B (en) * 2017-10-03 2022-06-01 Skywave Networks Llc Method and system of preconditioning transmitted signals
BR112020006920A2 (pt) * 2017-10-04 2020-10-06 Skywave Networks Llc manipulação de sinais recebidos em caminhos com diferentes números de saltos
CN111434053A (zh) 2017-10-04 2020-07-17 天波网络有限责任公司 用于基于改变的大气条件而选择最佳传输频率的技术
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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
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CN113992287A (zh) * 2021-10-26 2022-01-28 封开低频时码授时台 一种低频时码授时信号载波频率优选方法及系统
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Also Published As

Publication number Publication date
CA1333921C (fr) 1995-01-10
GB2253971A (en) 1992-09-23
US5230076A (en) 1993-07-20
IT1235572B (it) 1992-09-11
SE8603211D0 (sv) 1986-07-24
SE8603211L (sv) 1992-11-06
DE3546469C2 (de) 1994-09-08
AU632279B2 (en) 1992-12-24
NL192282C (nl) 1997-04-03
GB2253971B (en) 1993-02-03
FR2714777A1 (fr) 1995-07-07
DE3546469A1 (de) 1993-07-29
SE469649B (sv) 1993-08-09
IT8648153A0 (it) 1986-06-19
NL8515007A (nl) 1992-10-01
NL192282B (nl) 1996-12-02

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Legal Events

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TP Transmission of property