NL192282C - Verbeteringen met betrekking tot ionosfeersondering. - Google Patents

Verbeteringen met betrekking tot ionosfeersondering. Download PDF

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Publication number
NL192282C
NL192282C NL8515007A NL8515007A NL192282C NL 192282 C NL192282 C NL 192282C NL 8515007 A NL8515007 A NL 8515007A NL 8515007 A NL8515007 A NL 8515007A NL 192282 C NL192282 C NL 192282C
Authority
NL
Netherlands
Prior art keywords
frequency
receiver
signal
code
probe system
Prior art date
Application number
NL8515007A
Other languages
English (en)
Dutch (nl)
Other versions
NL8515007A (nl
NL192282B (nl
Original Assignee
Secr Defence Brit
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 Secr Defence Brit filed Critical Secr Defence Brit
Publication of NL8515007A publication Critical patent/NL8515007A/nl
Publication of NL192282B publication Critical patent/NL192282B/xx
Application granted granted Critical
Publication of NL192282C publication Critical patent/NL192282C/nl

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

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)
NL8515007A 1984-10-30 1985-10-17 Verbeteringen met betrekking tot ionosfeersondering. NL192282C (nl)

Applications Claiming Priority (2)

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

Publications (3)

Publication Number Publication Date
NL8515007A NL8515007A (nl) 1992-10-01
NL192282B NL192282B (nl) 1996-12-02
NL192282C true NL192282C (nl) 1997-04-03

Family

ID=10568986

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8515007A NL192282C (nl) 1984-10-30 1985-10-17 Verbeteringen met betrekking tot ionosfeersondering.

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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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
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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
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
EP3692651A4 (fr) * 2017-10-03 2021-06-23 Skywave Networks LLC Procédé et système de préconditionnement de signaux transmis
GB2581701B (en) 2017-10-04 2022-08-10 Skywave Networks Llc Handling signals received on paths with differing numbers of hops
CA3114583A1 (fr) 2017-10-04 2019-04-11 Skywave Networks Llc Technique de selection de la meilleure frequence pour une transmission basee sur des conditions atmospheriques changeantes
GB2581931B (en) * 2017-10-25 2022-10-12 Skywave Networks Llc Fuzzy logic for processing transmission meta data
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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Also Published As

Publication number Publication date
IT8648153A0 (it) 1986-06-19
NL8515007A (nl) 1992-10-01
GB2253971A (en) 1992-09-23
US5230076A (en) 1993-07-20
FR2714777A1 (fr) 1995-07-07
AU632279B2 (en) 1992-12-24
DE3546469A1 (de) 1993-07-29
FR2714777B1 (fr) 1996-04-26
NL192282B (nl) 1996-12-02
DE3546469C2 (de) 1994-09-08
SE8603211D0 (sv) 1986-07-24
GB2253971B (en) 1993-02-03
SE469649B (sv) 1993-08-09
IT1235572B (it) 1992-09-11
CA1333921C (fr) 1995-01-10
SE8603211L (sv) 1992-11-06

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
SNR Assignments of patents or rights arising from examined patent applications

Owner name: QINETIQ LIMITED

V4 Discontinued because of reaching the maximum lifetime of a patent

Effective date: 20051017